Metronome with LEDs & Tone

How about a metronome that beeps and lights up? Why I think yes! Also same setup with separate code runs a Whack A Mole game!

Sep 26, 2018

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17391 views

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11 respects

lights

music

tone

Devices & Components

Arduino Uno Rev3

Jumper wires (generic)

Pushbutton switch 12mm

5 mm LED: Red

Pmod OLED

Hardware & Tools

Soldering iron (generic)

Project description

Code

Metronome

arduino

uploaded 2/19/19

1/*Metonome with delay & Interupts for buttons
2Created by Ryan Aebi  May 2018
3
4Design Structure
5-1 led that will flash with BPM (Beat Per Minute)
6-4  buttons to change BPM, +1, +10, -1, -10
7-1 display to show BPM rate
8-added  a buzzer for sound 7/19/18
9
10Button Design/wiring
11-all 4 buttons have one  pin going to ground.  (mate to this pin is unattached)
12-on opposite side of ground  the pins go to:
13  1) Pin# correspoding to +1, +10, -1, -10 as assigned in setup
14  2) go through a diode (low voltage led possibly), then to Pin#2 aka interrupt.
15    Diode allows current to follow from interupt pin#2 and one pressed buttons but  not from others
16
17Code Structure
18-Loop only to reference blink function
19-Blink  function to control blink rate
20  *blink has a base blink on time
21  *blink  off time is cacluated by [blink on time - milliseconds of BPM calculation]
22      Pit  falls of this calculation are that at high speeds (~1200 BPM) an error will occur,  this can be avoided by reducing blink on time
23-Use interupt for button pushes
24-interupt  triggers evaluate function to evaluate which button was pressed
25  *button push  triggers BPM functions
26  *button functions either change BPM to +1, +10, -1 or  -10
27    *additionally causes BPM to be written to display via ITOA library
28    *causes recalculation of millisecond of each beat for blink function
29-Include  library for display 
30
31
32*/
33
34
35
36#include <stdlib.h> //for itoa
37
38
39//*****************************************Following  section is U8g2 library
40#include <Arduino.h>
41#include <U8g2lib.h>
42
43#ifdef  U8X8_HAVE_HW_SPI
44#include <SPI.h>
45#endif
46#ifdef U8X8_HAVE_HW_I2C
47#include  <Wire.h>
48#endif
49
50//following block of commented lines is all just for the  display, 
51//only one line should be umcommented
52/*
53  U8glib Example Overview:
54    Frame Buffer Examples: clearBuffer/sendBuffer. Fast, but may not work with all  Arduino boards because of RAM consumption
55    Page Buffer Examples: firstPage/nextPage.  Less RAM usage, should work with all Arduino boards.
56    U8x8 Text Only Example:  No RAM usage, direct communication with display controller. No graphics, 8x8 Text  only.
57    
58*/
59
60// Please UNCOMMENT one of the contructor lines below
61//  U8g2 Contructor List (Frame Buffer)
62// The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
63//  Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the  reset pin is not connected
64//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8  pixel display which does nothing
65//U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0,  /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
66//U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production,  Kickstarter Edition)
67//U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /*  cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
68//U8G2_SSD1306_128X64_NONAME_F_3W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
69//U8G2_SSD1306_128X64_NONAME_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
70//U8G2_SSD1306_128X64_ALT0_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // same as the NONAME variant, but may  solve the "every 2nd line skipped" problem
71//U8G2_SSD1306_128X64_NONAME_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* reset=*/ 8);
72//U8G2_SSD1306_128X64_NONAME_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   //  All Boards without Reset of the Display
73//U8G2_SSD1306_128X64_NONAME_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ 16, /* data=*/ 17, /* reset=*/ U8X8_PIN_NONE);   // ESP32  Thing, pure SW emulated I2C
74//U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0,  /* reset=*/ U8X8_PIN_NONE, /* clock=*/ 16, /* data=*/ 17);   // ESP32 Thing, HW  I2C with pin remapping
75//U8G2_SSD1306_128X64_NONAME_F_6800 u8g2(U8G2_R0, 13,  11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/ 8);
76//U8G2_SSD1306_128X64_NONAME_F_8080  u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/  8);
77//U8G2_SSD1306_128X64_VCOMH0_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);	// same as the NONAME variant, but maximizes setContrast() range
78//U8G2_SSD1306_128X64_ALT0_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// same as the NONAME variant,  but may solve the "every 2nd line skipped" problem
79//U8G2_SH1106_128X64_NONAME_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
80//U8G2_SH1106_128X64_NONAME_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
81//U8G2_SH1106_128X64_VCOMH0_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME  variant, but maximizes setContrast() range
82//U8G2_SH1106_128X64_WINSTAR_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME  variant, but uses updated SH1106 init sequence
83//U8G2_SH1106_72X40_WISE_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
84//U8G2_SH1107_64X128_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
85//U8G2_SH1107_128X128_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
86//U8G2_SH1107_128X128_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ 8);
87//U8G2_SH1107_SEEED_96X96_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
88//U8G2_SH1122_256X64_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);				// Enable U8G2_16BIT in u8g2.h
89//U8G2_SSD1306_128X32_UNIVISION_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ 21, /* data=*/ 20, /* reset=*/ U8X8_PIN_NONE);   // Adafruit  Feather M0 Basic Proto + FeatherWing OLED
90U8G2_SSD1306_128X32_UNIVISION_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   //  Adafruit Feather ESP8266/32u4 Boards + FeatherWing OLED
91//U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);  // Adafruit ESP8266/32u4/ARM Boards +  FeatherWing OLED
92//U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, /* reset=*/  U8X8_PIN_NONE, /* clock=*/ SCL, /* data=*/ SDA);   // pin remapping with ESP8266  HW I2C
93//U8G2_SSD1306_64X48_ER_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // EastRising 0.66" OLED breakout board, Uno: A4=SDA, A5=SCL, 5V powered
94//U8G2_SSD1306_48X64_WINSTAR_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   
95//U8G2_SSD1306_64X32_NONAME_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); 
96//U8G2_SSD1306_64X32_1F_F_HW_I2C u8g2(U8G2_R0,  /* reset=*/ U8X8_PIN_NONE); 
97//U8G2_SSD1306_96X16_ER_F_HW_I2C u8g2(U8G2_R0, /*  reset=*/ U8X8_PIN_NONE);   // EastRising 0.69" OLED
98//U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Enable U8G2_16BIT in u8g2.h
99//U8G2_SSD1322_NHD_256X64_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Enable U8G2_16BIT in u8g2.h
100//U8G2_SSD1322_NHD_128X64_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
101//U8G2_SSD1322_NHD_128X64_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
102//U8G2_SSD1325_NHD_128X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 
103//U8G2_SSD1325_NHD_128X64_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	
104//U8G2_SSD1326_ER_256X32_1_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);         // experimental driver for ER-OLED018-1
105//U8G2_SSD1327_SEEED_96X96_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);	// Seeedstudio  Grove OLED 96x96
106//U8G2_SSD1327_SEEED_96X96_F_HW_I2C u8g2(U8G2_R0, /* reset=*/  U8X8_PIN_NONE);	// Seeedstudio Grove OLED 96x96
107//U8G2_SSD1327_MIDAS_128X128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
108//U8G2_SSD1327_MIDAS_128X128_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
109//U8G2_SSD1329_128X96_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /*  clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
110//U8G2_SSD1329_128X96_NONAME_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
111//U8G2_SSD1305_128X32_NONAME_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
112//U8G2_SSD1305_128X32_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
113//U8G2_SSD1306_128X64_ADAFRUIT_F_4W_SW_SPI u8g2(U8G2_R0, /*  clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
114//U8G2_SSD1306_128X64_ADAFRUIT_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
115//U8G2_SSD1309_128X64_NONAME0_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);  
116//U8G2_SSD1309_128X64_NONAME0_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /*  dc=*/ 9, /* reset=*/ 8);  
117//U8G2_SSD1309_128X64_NONAME2_F_4W_SW_SPI u8g2(U8G2_R0,  /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
118//U8G2_SSD1309_128X64_NONAME2_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
119//U8G2_LD7032_60X32_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 11, /* data=*/ 12, /* cs=*/ 9, /* dc=*/ 10, /* reset=*/  8);	// SW SPI Nano Board
120//U8G2_LD7032_60X32_F_4W_SW_I2C u8g2(U8G2_R0, /* clock=*/  11, /* data=*/ 12, /* reset=*/ U8X8_PIN_NONE);	// NOT TESTED!
121//U8G2_UC1701_EA_DOGS102_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
122//U8G2_UC1701_EA_DOGS102_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
123//U8G2_PCD8544_84X48_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  // Nokia 5110 Display
124//U8G2_PCD8544_84X48_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 		// Nokia 5110 Display
125//U8G2_PCF8812_96X65_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Could be also PCF8814
126//U8G2_PCF8812_96X65_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);						// Could be also PCF8814
127//U8G2_HX1230_96X68_F_3W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
128//U8G2_HX1230_96X68_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
129//U8G2_KS0108_128X64_F u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/  18, /*dc=*/ 17, /*cs0=*/ 14, /*cs1=*/ 15, /*cs2=*/ U8X8_PIN_NONE, /* reset=*/  U8X8_PIN_NONE);  	// Set R/W to low!
130//U8G2_KS0108_ERM19264_F u8g2(U8G2_R0, 8, 9, 10, 11, 4,  5, 6, 7, /*enable=*/ 18, /*dc=*/ 17, /*cs0=*/ 14, /*cs1=*/ 15, /*cs2=*/ 16, /* reset=*/  U8X8_PIN_NONE); 	// Set R/W to low!
131//U8G2_ST7920_192X32_F_8080 u8g2(U8G2_R0,  8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ U8X8_PIN_NONE, /*dc=*/ 17, /*reset=*/  U8X8_PIN_NONE);
132//U8G2_ST7920_192X32_F_SW_SPI u8g2(U8G2_R0, /* clock=*/ 18 /*  A4 */ , /* data=*/ 16 /* A2 */, /* CS=*/ 17 /* A3 */, /* reset=*/ U8X8_PIN_NONE);
133//U8G2_ST7920_128X64_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18 /* A4 */, /*cs=*/ U8X8_PIN_NONE,  /*dc/rs=*/ 17 /* A3 */, /*reset=*/ 15 /* A1 */);	// Remember to set R/W to 0 
134//U8G2_ST7920_128X64_F_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 18 /* A4 */ , /* data=*/ 16 /* A2 */, /* CS=*/ 17 /* A3  */, /* reset=*/ U8X8_PIN_NONE);
135//U8G2_ST7920_128X64_F_SW_SPI u8g2(U8G2_R0, /*  clock=*/ 13, /* data=*/ 11, /* CS=*/ 10, /* reset=*/ 8);
136//U8G2_ST7920_128X64_F_HW_SPI  u8g2(U8G2_R0, /* CS=*/ 10, /* reset=*/ 8);
137//U8G2_ST7565_EA_DOGM128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
138//U8G2_ST7565_EA_DOGM128_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
139//U8G2_ST7565_64128N_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
140//U8G2_ST7565_64128N_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
141//U8G2_ST7565_EA_DOGM132_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);	// DOGM132 Shield
142//U8G2_ST7565_EA_DOGM132_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ U8X8_PIN_NONE);	// DOGM132 Shield
143//U8G2_ST7565_ZOLEN_128X64_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
144//U8G2_ST7565_ZOLEN_128X64_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
145//U8G2_ST7565_LM6059_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// Adafruit ST7565  GLCD
146//U8G2_ST7565_LM6059_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);		// Adafruit ST7565 GLCD
147//U8G2_ST7565_LX12864_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
148//U8G2_ST7565_LX12864_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);
149//U8G2_ST7565_ERC12864_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
150//U8G2_ST7565_ERC12864_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
151//U8G2_ST7565_NHD_C12832_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
152//U8G2_ST7565_NHD_C12832_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
153//U8G2_ST7565_NHD_C12864_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
154//U8G2_ST7565_NHD_C12864_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
155//U8G2_ST7565_JLX12864_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
156//U8G2_ST7565_JLX12864_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);
157//U8G2_ST7567_PI_132X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/ 8);  // Pax Instruments Shield,  LCD_BL=6
158//U8G2_ST7567_PI_132X64_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 7, /* dc=*/  9, /* reset=*/ 8);  // Pax Instruments Shield, LCD_BL=6
159//U8G2_ST7567_JLX12864_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/  8);  
160//U8G2_ST7567_JLX12864_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 7, /* dc=*/ 9,  /* reset=*/ 8);  
161//U8G2_ST75256_JLX172104_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
162//U8G2_ST75256_JLX172104_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
163//U8G2_ST75256_JLX256128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Enable U8g2 16 bit mode for this display
164//U8G2_ST75256_JLX256128_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// Enable U8g2 16 bit  mode for this display
165//U8G2_ST75256_JLX256128_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  9, /* data=*/ 8, /* cs=*/ 7, /* dc=*/ 6, /* reset=*/ 5);  // MKR Zero, Enable U8g2  16 bit mode for this display
166//U8G2_ST75256_JLX256128_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 7, /* dc=*/ 6, /* reset=*/ 5);  // MKR Zero, Enable U8g2 16 bit mode for  this display
167//U8G2_ST75256_JLX256160_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13,  /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Enable U8g2 16 bit mode  for this display
168//U8G2_ST75256_JLX256160_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/  10, /* dc=*/ 9, /* reset=*/ 8);		// Enable U8g2 16 bit mode for this display
169//U8G2_ST75256_JLX240160_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
170//U8G2_ST75256_JLX240160_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
171//U8G2_ST75256_JLX25664_F_2ND_HW_I2C u8g2(U8G2_R0, /* reset=*/  8);	// Due, 2nd I2C, enable U8g2 16 bit mode for this display
172//U8G2_NT7534_TG12864R_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);  
173//U8G2_NT7534_TG12864R_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);  
174//U8G2_ST7588_JLX12864_F_SW_I2C u8g2(U8G2_R0, /* clock=*/  SCL, /* data=*/ SDA, /* reset=*/ 5);  
175//U8G2_ST7588_JLX12864_F_HW_I2C u8g2(U8G2_R0,  /* reset=*/ 5);
176//U8G2_IST3020_ERC19264_F_6800 u8g2(U8G2_R0, 44, 43, 42, 41,  40, 39, 38, 37,  /*enable=*/ 28, /*cs=*/ 32, /*dc=*/ 30, /*reset=*/ 31); // Connect  WR pin with GND
177//U8G2_IST3020_ERC19264_F_8080 u8g2(U8G2_R0, 44, 43, 42, 41,  40, 39, 38, 37,  /*enable=*/ 29, /*cs=*/ 32, /*dc=*/ 30, /*reset=*/ 31); // Connect  RD pin with 3.3V
178//U8G2_IST3020_ERC19264_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
179//U8G2_LC7981_160X80_F_6800  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RW with GND
180//U8G2_LC7981_160X160_F_6800 u8g2(U8G2_R0,  8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16);  // Connect RW with GND
181//U8G2_LC7981_240X128_F_6800 u8g2(U8G2_R0, 8, 9, 10, 11,  4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW  with GND
182//U8G2_SED1520_122X32_F u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*dc=*/  A0, /*e1=*/ A3, /*e2=*/ A2, /* reset=*/  A4); 	// Set R/W to low!
183//U8G2_T6963_240X128_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
184//U8G2_T6963_256X64_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
185//U8G2_SED1330_240X128_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RD with +5V, FG with GND
186//U8G2_SED1330_240X128_F_6800  u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/  8); // A0 is dc pin!
187//U8G2_RA8835_NHD_240X128_F_8080 u8g2(U8G2_R0, 8, 9, 10,  11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect  /RD = E with +5V, enable is /WR = RW, FG with GND, 14=Uno Pin A0
188//U8G2_RA8835_NHD_240X128_F_6800  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7,  /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // A0 is dc pin, /WR = RW = GND, enable is /RD = E
189//U8G2_UC1604_JLX19264_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8); 
190//U8G2_UC1604_JLX19264_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);  
191//U8G2_UC1608_ERC24064_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  // SW SPI, Due ERC24064-1  Test Setup
192//U8G2_UC1608_ERC240120_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13,  /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 
193//U8G2_UC1608_240X128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);  // SW SPI, Due ERC24064-1 Test Setup
194//U8G2_UC1610_EA_DOGXL160_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);
195//U8G2_UC1610_EA_DOGXL160_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/  10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);
196//U8G2_UC1611_EA_DOGM240_F_2ND_HW_I2C  u8g2(U8G2_R0, /* reset=*/ 8);	// Due, 2nd I2C, DOGM240 Test Board
197//U8G2_UC1611_EA_DOGM240_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);   // Due, SW SPI, DOGXL240 Test Board
198//U8G2_UC1611_EA_DOGXL240_F_2ND_HW_I2C  u8g2(U8G2_R0, /* reset=*/ 8);	// Due, 2nd I2C, DOGXL240 Test Board
199//U8G2_UC1611_EA_DOGXL240_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);   // Due, SW SPI, DOGXL240 Test Board
200//U8G2_UC1611_EW50850_F_8080 u8g2(U8G2_R0,  8, 9, 10, 11, 4, 5, 6, 7,  /*enable=*/ 18, /*cs=*/ 3, /*dc=*/ 16, /*reset=*/ 16);  // 240x160, Connect RD/WR1 pin with 3.3V, CS is aktive high
201//U8G2_UC1638_160X128_F_4W_HW_SPI  u8g2(U8G2_R2, /* cs=*/ 2, /* dc=*/ 3, /* reset=*/ 4); 	 // Not tested
202//U8G2_SSD1606_172X72_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);		// eInk/ePaper Display
203//U8G2_SSD1607_200X200_F_4W_SW_SPI u8g2(U8G2_R0,  /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// eInk/ePaper  Display, original LUT from embedded artists
204//U8G2_SSD1607_GD_200X200_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Good Display
205//U8G2_IL3820_296X128_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// WaveShare 2.9 inch  eInk/ePaper Display, enable 16 bit mode for this display!
206//U8G2_IL3820_V2_296X128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// ePaper Display, lesser flickering and faster speed, enable 16 bit mode for  this display!
207
208//************************************** End of constructor  list
209
210
211//**************************************************************Declared  Integers
212  const int InterruptButtonForEvaluate=2; 
213  
214  const int PositiveButton1=6;
215  const int PositiveButton10=5;
216  const int NegativeButton1=7;
217  const int  NegativeButton10=4;
218  const int BuzzerPin=10;
219 
220  int BeatsPerMinute =  60; //60,000/BPM = ms //this is the intial start up value of BPM
221  int ms_of_beat  = 60000/BeatsPerMinute; //ms to turn on
222
223  const int Metronome_LED=9; //Pin  LED is attached to
224  int LEDonRate=50; //time LED is spent on for each flash
225
226  char tmp_string[8]; //for itoa
227
228
229//**************************************************************Metronome  Blink
230void Metronome_Blink(){
231
232  digitalWrite(Metronome_LED, HIGH);
233  tone(BuzzerPin, 523, LEDonRate);
234  delay(LEDonRate);
235  digitalWrite(Metronome_LED,  LOW);
236  delay(ms_of_beat-50);
237}
238
239void EvaluateButton(){ //Function is  triggered by interrupt, results in seeing what pin was pressed
240  if (digitalRead(PositiveButton1)==LOW)  {BPM_Plus_One();}
241  else if (digitalRead(PositiveButton10)==LOW) {BPM_Plus_Ten();}
242  else if (digitalRead(NegativeButton1)==LOW) {BPM_Minus_One();}
243  else if (digitalRead(NegativeButton10)==LOW)  {BPM_Minus_Ten();}
244  
245  //display error message
246  
247  else {
248  u8g2.clearBuffer();  //clear function
249  u8g2.setFont(u8g2_font_9x18_tr);
250  u8g2.drawStr(5,25,"Error");  //what to send
251  u8g2.sendBuffer(); 
252  delay(500);
253  }
254  
255  
256}
257
258
259//**************************************************************BPM  Plus One
260void BPM_Plus_One(){
261  BeatsPerMinute=BeatsPerMinute+1;
262  
263  ms_of_beat = 60000/BeatsPerMinute;
264  
265  u8g2.clearBuffer();
266  u8g2.setFont(u8g2_font_10x20_tr);
267  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
268  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
269  u8g2.setFont(u8g2_font_10x20_tr);
270  u8g2.drawStr(65,28, "BPM");
271  u8g2.sendBuffer();
272}
273
274//**************************************************************BPM  Plus Ten
275void BPM_Plus_Ten(){
276  BeatsPerMinute=BeatsPerMinute+10;
277  
278  ms_of_beat = 60000/BeatsPerMinute;
279  
280  u8g2.clearBuffer();
281  u8g2.setFont(u8g2_font_10x20_tr);
282  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
283  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
284  u8g2.setFont(u8g2_font_10x20_tr);
285  u8g2.drawStr(65,28, "BPM");
286  u8g2.sendBuffer();
287}
288
289
290//**************************************************************BPM  Minus One
291void BPM_Minus_One(){
292  BeatsPerMinute=BeatsPerMinute-1;
293  
294  ms_of_beat = 60000/BeatsPerMinute;
295  
296  u8g2.clearBuffer();
297  u8g2.setFont(u8g2_font_10x20_tr);
298  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
299  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
300  u8g2.setFont(u8g2_font_10x20_tr);
301  u8g2.drawStr(65,28, "BPM");
302  u8g2.sendBuffer();
303}
304
305//**************************************************************BPM  Minus Ten
306void BPM_Minus_Ten(){
307  BeatsPerMinute=BeatsPerMinute-10;
308  
309  ms_of_beat = 60000/BeatsPerMinute;
310  
311  u8g2.clearBuffer();
312  u8g2.setFont(u8g2_font_10x20_tr);
313  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
314  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
315  u8g2.setFont(u8g2_font_10x20_tr);
316  u8g2.drawStr(65,28, "BPM");
317  u8g2.sendBuffer();
318}
319
320
321//**************************************************************Setup
322void  setup(){ 
323  pinMode(Metronome_LED, OUTPUT);
324  
325  pinMode(InterruptButtonForEvaluate,  INPUT_PULLUP); //internal pull up resistor
326  pinMode(PositiveButton1, INPUT_PULLUP);
327  pinMode(PositiveButton10, INPUT_PULLUP);
328  pinMode(NegativeButton1, INPUT_PULLUP);
329  pinMode(NegativeButton10, INPUT_PULLUP);
330  pinMode(BuzzerPin, OUTPUT);
331  //write other pins with pullups as well? yes i think so
332  
333  //setting pins  as input with pull up resistors
334  /*
335  pinMode(PositiveButton1, INPUT);
336  pinMode(PositiveButton10, INPUT);
337  pinMode(NegativeButton1, INPUT);
338  pinMode(NegativeButton10,  INPUT);
339  */
340  digitalWrite(NegativeButton1, HIGH);
341  digitalWrite(NegativeButton10,  HIGH);
342  digitalWrite(PositiveButton1, HIGH);
343  digitalWrite(PositiveButton10,  HIGH);
344  
345  //any button pushed caused the EvaluateButton function to trigger
346  attachInterrupt(digitalPinToInterrupt(InterruptButtonForEvaluate), EvaluateButton,  LOW); //means pin state went to ground on interupt pin
347  
348  u8g2.begin();
349  
350  /*Font Notes:*******************************************************
351  
352  Display is 128 x 32 pixels, starts counting from top left closest to SDA  pin
353  format of code is: (character x axis higher means more to right, character  y axis higher means more down, character to send)
354  
355  Note: on drawStr(controls  x centering, controls y height, controls text)
356    //u8g2.setFont(u8g2_font_ncenB08_tr);	//  This was font in setet
357    //u8g2.setFont(u8g2_font_ncenB14_tf); //setting font  coppied from reference (does this work?) text to large and goes to high
358    //u8g2.setFont(u8g_font_courB08);  //Setting font (does this work?!) very small text
359  
360  *********************************************************************/
361  
362  
363  //General format to add text requires next three lines
364  u8g2.clearBuffer();  //clear function
365  u8g2.setFont(u8g2_font_9x18_tr);
366  u8g2.drawStr(5,25,"Time  To Beat"); //what to send
367  u8g2.sendBuffer();	//actual transfer aka. send
368  delay(2000);
369  u8g2.clearBuffer();  //clear function
370  u8g2.setFont(u8g2_font_9x18_tr);  //trying different font
371  u8g2.drawStr(0,25,"By Ryan Da Man"); //what to send
372  u8g2.sendBuffer();	//actual transfer aka. send
373  delay(1000);
374  
375  
376  //writes on initial setup BPM
377  u8g2.clearBuffer();
378  u8g2.setFont(u8g2_font_10x20_tr);  //ncenB24_tf
379  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
380  u8g2.drawStr(1,28, tmp_string); //displays the int which is now a character following  was center: u8g2.drawStr(39,28, tmp_string);
381  u8g2.setFont(u8g2_font_10x20_tr);  //ncenB18_tf
382  u8g2.drawStr(65,28, "BPM");
383  u8g2.sendBuffer();
384
385}
386
387//next  lines are personal notes to reduce sketch size by changing fonts on display
388//70%  with 3 types; 25% with all 9x18_tn; 9x18_tr 28%; with a 10x20_tr is 33%
389// current  prior to pinchange function, and removing one interupt, adding +10 &-10 function;  went to 32%
390
391
392//**************************************************************Main  Loop
393void loop(){
394  
395  {Metronome_Blink();} //just one line of code to  do it all :)
396  
397}
398

/*Metonome with delay & Interupts for buttons
Created by Ryan Aebi  May 2018

Design Structure
-1 led that will flash with BPM (Beat Per Minute)
-4  buttons to change BPM, +1, +10, -1, -10
-1 display to show BPM rate
-added  a buzzer for sound 7/19/18

Button Design/wiring
-all 4 buttons have one  pin going to ground.  (mate to this pin is unattached)
-on opposite side of ground  the pins go to:
  1) Pin# correspoding to +1, +10, -1, -10 as assigned in setup
  2) go through a diode (low voltage led possibly), then to Pin#2 aka interrupt.
    Diode allows current to follow from interupt pin#2 and one pressed buttons but  not from others

Code Structure
-Loop only to reference blink function
-Blink  function to control blink rate
  *blink has a base blink on time
  *blink  off time is cacluated by [blink on time - milliseconds of BPM calculation]
      Pit  falls of this calculation are that at high speeds (~1200 BPM) an error will occur,  this can be avoided by reducing blink on time
-Use interupt for button pushes
-interupt  triggers evaluate function to evaluate which button was pressed
  *button push  triggers BPM functions
  *button functions either change BPM to +1, +10, -1 or  -10
    *additionally causes BPM to be written to display via ITOA library
    *causes recalculation of millisecond of each beat for blink function
-Include  library for display 


*/



#include <stdlib.h> //for itoa


//*****************************************Following  section is U8g2 library
#include <Arduino.h>
#include <U8g2lib.h>

#ifdef  U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include  <Wire.h>
#endif

//following block of commented lines is all just for the  display, 
//only one line should be umcommented
/*
  U8glib Example Overview:
    Frame Buffer Examples: clearBuffer/sendBuffer. Fast, but may not work with all  Arduino boards because of RAM consumption
    Page Buffer Examples: firstPage/nextPage.  Less RAM usage, should work with all Arduino boards.
    U8x8 Text Only Example:  No RAM usage, direct communication with display controller. No graphics, 8x8 Text  only.
    
*/

// Please UNCOMMENT one of the contructor lines below
//  U8g2 Contructor List (Frame Buffer)
// The complete list is available here: https://github.com/olikraus/u8g2/wiki/u8g2setupcpp
//  Please update the pin numbers according to your setup. Use U8X8_PIN_NONE if the  reset pin is not connected
//U8G2_NULL u8g2(U8G2_R0);	// null device, a 8x8  pixel display which does nothing
//U8G2_SSD1306_128X64_NONAME_F_4W_SW_SPI u8g2(U8G2_R0,  /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 12, /* dc=*/ 4, /* reset=*/ 6);	// Arduboy (Production,  Kickstarter Edition)
//U8G2_SSD1306_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /*  cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_F_3W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
//U8G2_SSD1306_128X64_ALT0_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // same as the NONAME variant, but may  solve the "every 2nd line skipped" problem
//U8G2_SSD1306_128X64_NONAME_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   //  All Boards without Reset of the Display
//U8G2_SSD1306_128X64_NONAME_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ 16, /* data=*/ 17, /* reset=*/ U8X8_PIN_NONE);   // ESP32  Thing, pure SW emulated I2C
//U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0,  /* reset=*/ U8X8_PIN_NONE, /* clock=*/ 16, /* data=*/ 17);   // ESP32 Thing, HW  I2C with pin remapping
//U8G2_SSD1306_128X64_NONAME_F_6800 u8g2(U8G2_R0, 13,  11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/ 8);
//U8G2_SSD1306_128X64_NONAME_F_8080  u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/  8);
//U8G2_SSD1306_128X64_VCOMH0_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);	// same as the NONAME variant, but maximizes setContrast() range
//U8G2_SSD1306_128X64_ALT0_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// same as the NONAME variant,  but may solve the "every 2nd line skipped" problem
//U8G2_SH1106_128X64_NONAME_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SH1106_128X64_NONAME_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
//U8G2_SH1106_128X64_VCOMH0_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME  variant, but maximizes setContrast() range
//U8G2_SH1106_128X64_WINSTAR_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME  variant, but uses updated SH1106 init sequence
//U8G2_SH1106_72X40_WISE_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SH1107_64X128_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SH1107_128X128_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SH1107_128X128_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ 8);
//U8G2_SH1107_SEEED_96X96_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SH1122_256X64_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);				// Enable U8G2_16BIT in u8g2.h
//U8G2_SSD1306_128X32_UNIVISION_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ 21, /* data=*/ 20, /* reset=*/ U8X8_PIN_NONE);   // Adafruit  Feather M0 Basic Proto + FeatherWing OLED
U8G2_SSD1306_128X32_UNIVISION_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);   //  Adafruit Feather ESP8266/32u4 Boards + FeatherWing OLED
//U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);  // Adafruit ESP8266/32u4/ARM Boards +  FeatherWing OLED
//U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, /* reset=*/  U8X8_PIN_NONE, /* clock=*/ SCL, /* data=*/ SDA);   // pin remapping with ESP8266  HW I2C
//U8G2_SSD1306_64X48_ER_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   // EastRising 0.66" OLED breakout board, Uno: A4=SDA, A5=SCL, 5V powered
//U8G2_SSD1306_48X64_WINSTAR_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);   
//U8G2_SSD1306_64X32_NONAME_F_HW_I2C  u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE); 
//U8G2_SSD1306_64X32_1F_F_HW_I2C u8g2(U8G2_R0,  /* reset=*/ U8X8_PIN_NONE); 
//U8G2_SSD1306_96X16_ER_F_HW_I2C u8g2(U8G2_R0, /*  reset=*/ U8X8_PIN_NONE);   // EastRising 0.69" OLED
//U8G2_SSD1322_NHD_256X64_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Enable U8G2_16BIT in u8g2.h
//U8G2_SSD1322_NHD_256X64_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Enable U8G2_16BIT in u8g2.h
//U8G2_SSD1322_NHD_128X64_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_SSD1322_NHD_128X64_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_SSD1325_NHD_128X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 
//U8G2_SSD1325_NHD_128X64_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	
//U8G2_SSD1326_ER_256X32_1_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);         // experimental driver for ER-OLED018-1
//U8G2_SSD1327_SEEED_96X96_F_SW_I2C  u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);	// Seeedstudio  Grove OLED 96x96
//U8G2_SSD1327_SEEED_96X96_F_HW_I2C u8g2(U8G2_R0, /* reset=*/  U8X8_PIN_NONE);	// Seeedstudio Grove OLED 96x96
//U8G2_SSD1327_MIDAS_128X128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_SSD1327_MIDAS_128X128_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_SSD1329_128X96_NONAME_F_4W_SW_SPI u8g2(U8G2_R0, /*  clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1329_128X96_NONAME_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1305_128X32_NONAME_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_SSD1305_128X32_NONAME_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_SSD1306_128X64_ADAFRUIT_F_4W_SW_SPI u8g2(U8G2_R0, /*  clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1306_128X64_ADAFRUIT_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_SSD1309_128X64_NONAME0_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);  
//U8G2_SSD1309_128X64_NONAME0_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /*  dc=*/ 9, /* reset=*/ 8);  
//U8G2_SSD1309_128X64_NONAME2_F_4W_SW_SPI u8g2(U8G2_R0,  /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_SSD1309_128X64_NONAME2_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  
//U8G2_LD7032_60X32_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 11, /* data=*/ 12, /* cs=*/ 9, /* dc=*/ 10, /* reset=*/  8);	// SW SPI Nano Board
//U8G2_LD7032_60X32_F_4W_SW_I2C u8g2(U8G2_R0, /* clock=*/  11, /* data=*/ 12, /* reset=*/ U8X8_PIN_NONE);	// NOT TESTED!
//U8G2_UC1701_EA_DOGS102_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_UC1701_EA_DOGS102_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_PCD8544_84X48_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  // Nokia 5110 Display
//U8G2_PCD8544_84X48_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 		// Nokia 5110 Display
//U8G2_PCF8812_96X65_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Could be also PCF8814
//U8G2_PCF8812_96X65_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);						// Could be also PCF8814
//U8G2_HX1230_96X68_F_3W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);
//U8G2_HX1230_96X68_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_KS0108_128X64_F u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/  18, /*dc=*/ 17, /*cs0=*/ 14, /*cs1=*/ 15, /*cs2=*/ U8X8_PIN_NONE, /* reset=*/  U8X8_PIN_NONE);  	// Set R/W to low!
//U8G2_KS0108_ERM19264_F u8g2(U8G2_R0, 8, 9, 10, 11, 4,  5, 6, 7, /*enable=*/ 18, /*dc=*/ 17, /*cs0=*/ 14, /*cs1=*/ 15, /*cs2=*/ 16, /* reset=*/  U8X8_PIN_NONE); 	// Set R/W to low!
//U8G2_ST7920_192X32_F_8080 u8g2(U8G2_R0,  8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ U8X8_PIN_NONE, /*dc=*/ 17, /*reset=*/  U8X8_PIN_NONE);
//U8G2_ST7920_192X32_F_SW_SPI u8g2(U8G2_R0, /* clock=*/ 18 /*  A4 */ , /* data=*/ 16 /* A2 */, /* CS=*/ 17 /* A3 */, /* reset=*/ U8X8_PIN_NONE);
//U8G2_ST7920_128X64_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18 /* A4 */, /*cs=*/ U8X8_PIN_NONE,  /*dc/rs=*/ 17 /* A3 */, /*reset=*/ 15 /* A1 */);	// Remember to set R/W to 0 
//U8G2_ST7920_128X64_F_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 18 /* A4 */ , /* data=*/ 16 /* A2 */, /* CS=*/ 17 /* A3  */, /* reset=*/ U8X8_PIN_NONE);
//U8G2_ST7920_128X64_F_SW_SPI u8g2(U8G2_R0, /*  clock=*/ 13, /* data=*/ 11, /* CS=*/ 10, /* reset=*/ 8);
//U8G2_ST7920_128X64_F_HW_SPI  u8g2(U8G2_R0, /* CS=*/ 10, /* reset=*/ 8);
//U8G2_ST7565_EA_DOGM128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_ST7565_EA_DOGM128_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_ST7565_64128N_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_64128N_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_EA_DOGM132_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);	// DOGM132 Shield
//U8G2_ST7565_EA_DOGM132_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ U8X8_PIN_NONE);	// DOGM132 Shield
//U8G2_ST7565_ZOLEN_128X64_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_ST7565_ZOLEN_128X64_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_ST7565_LM6059_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// Adafruit ST7565  GLCD
//U8G2_ST7565_LM6059_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);		// Adafruit ST7565 GLCD
//U8G2_ST7565_LX12864_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_ST7565_LX12864_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);
//U8G2_ST7565_ERC12864_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_ERC12864_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_NHD_C12832_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_ST7565_NHD_C12832_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_ST7565_NHD_C12864_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_NHD_C12864_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST7565_JLX12864_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_ST7565_JLX12864_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);
//U8G2_ST7567_PI_132X64_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/ 8);  // Pax Instruments Shield,  LCD_BL=6
//U8G2_ST7567_PI_132X64_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 7, /* dc=*/  9, /* reset=*/ 8);  // Pax Instruments Shield, LCD_BL=6
//U8G2_ST7567_JLX12864_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 7, /* dc=*/ 9, /* reset=*/  8);  
//U8G2_ST7567_JLX12864_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 7, /* dc=*/ 9,  /* reset=*/ 8);  
//U8G2_ST75256_JLX172104_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST75256_JLX172104_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_ST75256_JLX256128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Enable U8g2 16 bit mode for this display
//U8G2_ST75256_JLX256128_F_4W_HW_SPI  u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// Enable U8g2 16 bit  mode for this display
//U8G2_ST75256_JLX256128_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  9, /* data=*/ 8, /* cs=*/ 7, /* dc=*/ 6, /* reset=*/ 5);  // MKR Zero, Enable U8g2  16 bit mode for this display
//U8G2_ST75256_JLX256128_F_4W_HW_SPI u8g2(U8G2_R0,  /* cs=*/ 7, /* dc=*/ 6, /* reset=*/ 5);  // MKR Zero, Enable U8g2 16 bit mode for  this display
//U8G2_ST75256_JLX256160_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13,  /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// Enable U8g2 16 bit mode  for this display
//U8G2_ST75256_JLX256160_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/  10, /* dc=*/ 9, /* reset=*/ 8);		// Enable U8g2 16 bit mode for this display
//U8G2_ST75256_JLX240160_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);
//U8G2_ST75256_JLX240160_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);
//U8G2_ST75256_JLX25664_F_2ND_HW_I2C u8g2(U8G2_R0, /* reset=*/  8);	// Due, 2nd I2C, enable U8g2 16 bit mode for this display
//U8G2_NT7534_TG12864R_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);  
//U8G2_NT7534_TG12864R_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/  9, /* reset=*/ 8);  
//U8G2_ST7588_JLX12864_F_SW_I2C u8g2(U8G2_R0, /* clock=*/  SCL, /* data=*/ SDA, /* reset=*/ 5);  
//U8G2_ST7588_JLX12864_F_HW_I2C u8g2(U8G2_R0,  /* reset=*/ 5);
//U8G2_IST3020_ERC19264_F_6800 u8g2(U8G2_R0, 44, 43, 42, 41,  40, 39, 38, 37,  /*enable=*/ 28, /*cs=*/ 32, /*dc=*/ 30, /*reset=*/ 31); // Connect  WR pin with GND
//U8G2_IST3020_ERC19264_F_8080 u8g2(U8G2_R0, 44, 43, 42, 41,  40, 39, 38, 37,  /*enable=*/ 29, /*cs=*/ 32, /*dc=*/ 30, /*reset=*/ 31); // Connect  RD pin with 3.3V
//U8G2_IST3020_ERC19264_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
//U8G2_LC7981_160X80_F_6800  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RW with GND
//U8G2_LC7981_160X160_F_6800 u8g2(U8G2_R0,  8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16);  // Connect RW with GND
//U8G2_LC7981_240X128_F_6800 u8g2(U8G2_R0, 8, 9, 10, 11,  4, 5, 6, 7, /*enable=*/ 18, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect RW  with GND
//U8G2_SED1520_122X32_F u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*dc=*/  A0, /*e1=*/ A3, /*e2=*/ A2, /* reset=*/  A4); 	// Set R/W to low!
//U8G2_T6963_240X128_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
//U8G2_T6963_256X64_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RD with +5V, FS0 and FS1 with GND
//U8G2_SED1330_240X128_F_8080  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // Connect RD with +5V, FG with GND
//U8G2_SED1330_240X128_F_6800  u8g2(U8G2_R0, 13, 11, 2, 3, 4, 5, 6, A4, /*enable=*/ 7, /*cs=*/ 10, /*dc=*/ 9, /*reset=*/  8); // A0 is dc pin!
//U8G2_RA8835_NHD_240X128_F_8080 u8g2(U8G2_R0, 8, 9, 10,  11, 4, 5, 6, 7, /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15, /*reset=*/ 16); // Connect  /RD = E with +5V, enable is /WR = RW, FG with GND, 14=Uno Pin A0
//U8G2_RA8835_NHD_240X128_F_6800  u8g2(U8G2_R0, 8, 9, 10, 11, 4, 5, 6, 7,  /*enable=*/ 17, /*cs=*/ 14, /*dc=*/ 15,  /*reset=*/ 16); // A0 is dc pin, /WR = RW = GND, enable is /RD = E
//U8G2_UC1604_JLX19264_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8); 
//U8G2_UC1604_JLX19264_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/ 10, /* dc=*/ 9,  /* reset=*/ 8);  
//U8G2_UC1608_ERC24064_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);  // SW SPI, Due ERC24064-1  Test Setup
//U8G2_UC1608_ERC240120_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13,  /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8); 
//U8G2_UC1608_240X128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);  // SW SPI, Due ERC24064-1 Test Setup
//U8G2_UC1610_EA_DOGXL160_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);
//U8G2_UC1610_EA_DOGXL160_F_4W_HW_SPI u8g2(U8G2_R0, /* cs=*/  10, /* dc=*/ 9, /* reset=*/  U8X8_PIN_NONE);
//U8G2_UC1611_EA_DOGM240_F_2ND_HW_I2C  u8g2(U8G2_R0, /* reset=*/ 8);	// Due, 2nd I2C, DOGM240 Test Board
//U8G2_UC1611_EA_DOGM240_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);   // Due, SW SPI, DOGXL240 Test Board
//U8G2_UC1611_EA_DOGXL240_F_2ND_HW_I2C  u8g2(U8G2_R0, /* reset=*/ 8);	// Due, 2nd I2C, DOGXL240 Test Board
//U8G2_UC1611_EA_DOGXL240_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);   // Due, SW SPI, DOGXL240 Test Board
//U8G2_UC1611_EW50850_F_8080 u8g2(U8G2_R0,  8, 9, 10, 11, 4, 5, 6, 7,  /*enable=*/ 18, /*cs=*/ 3, /*dc=*/ 16, /*reset=*/ 16);  // 240x160, Connect RD/WR1 pin with 3.3V, CS is aktive high
//U8G2_UC1638_160X128_F_4W_HW_SPI  u8g2(U8G2_R2, /* cs=*/ 2, /* dc=*/ 3, /* reset=*/ 4); 	 // Not tested
//U8G2_SSD1606_172X72_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);		// eInk/ePaper Display
//U8G2_SSD1607_200X200_F_4W_SW_SPI u8g2(U8G2_R0,  /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// eInk/ePaper  Display, original LUT from embedded artists
//U8G2_SSD1607_GD_200X200_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// Good Display
//U8G2_IL3820_296X128_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/  13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);	// WaveShare 2.9 inch  eInk/ePaper Display, enable 16 bit mode for this display!
//U8G2_IL3820_V2_296X128_F_4W_SW_SPI  u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* dc=*/ 9, /* reset=*/  8);	// ePaper Display, lesser flickering and faster speed, enable 16 bit mode for  this display!

//************************************** End of constructor  list


//**************************************************************Declared  Integers
  const int InterruptButtonForEvaluate=2; 
  
  const int PositiveButton1=6;
  const int PositiveButton10=5;
  const int NegativeButton1=7;
  const int  NegativeButton10=4;
  const int BuzzerPin=10;
 
  int BeatsPerMinute =  60; //60,000/BPM = ms //this is the intial start up value of BPM
  int ms_of_beat  = 60000/BeatsPerMinute; //ms to turn on

  const int Metronome_LED=9; //Pin  LED is attached to
  int LEDonRate=50; //time LED is spent on for each flash

  char tmp_string[8]; //for itoa


//**************************************************************Metronome  Blink
void Metronome_Blink(){

  digitalWrite(Metronome_LED, HIGH);
  tone(BuzzerPin, 523, LEDonRate);
  delay(LEDonRate);
  digitalWrite(Metronome_LED,  LOW);
  delay(ms_of_beat-50);
}

void EvaluateButton(){ //Function is  triggered by interrupt, results in seeing what pin was pressed
  if (digitalRead(PositiveButton1)==LOW)  {BPM_Plus_One();}
  else if (digitalRead(PositiveButton10)==LOW) {BPM_Plus_Ten();}
  else if (digitalRead(NegativeButton1)==LOW) {BPM_Minus_One();}
  else if (digitalRead(NegativeButton10)==LOW)  {BPM_Minus_Ten();}
  
  //display error message
  
  else {
  u8g2.clearBuffer();  //clear function
  u8g2.setFont(u8g2_font_9x18_tr);
  u8g2.drawStr(5,25,"Error");  //what to send
  u8g2.sendBuffer(); 
  delay(500);
  }
  
  
}


//**************************************************************BPM  Plus One
void BPM_Plus_One(){
  BeatsPerMinute=BeatsPerMinute+1;
  
  ms_of_beat = 60000/BeatsPerMinute;
  
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_10x20_tr);
  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
  u8g2.setFont(u8g2_font_10x20_tr);
  u8g2.drawStr(65,28, "BPM");
  u8g2.sendBuffer();
}

//**************************************************************BPM  Plus Ten
void BPM_Plus_Ten(){
  BeatsPerMinute=BeatsPerMinute+10;
  
  ms_of_beat = 60000/BeatsPerMinute;
  
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_10x20_tr);
  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
  u8g2.setFont(u8g2_font_10x20_tr);
  u8g2.drawStr(65,28, "BPM");
  u8g2.sendBuffer();
}


//**************************************************************BPM  Minus One
void BPM_Minus_One(){
  BeatsPerMinute=BeatsPerMinute-1;
  
  ms_of_beat = 60000/BeatsPerMinute;
  
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_10x20_tr);
  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
  u8g2.setFont(u8g2_font_10x20_tr);
  u8g2.drawStr(65,28, "BPM");
  u8g2.sendBuffer();
}

//**************************************************************BPM  Minus Ten
void BPM_Minus_Ten(){
  BeatsPerMinute=BeatsPerMinute-10;
  
  ms_of_beat = 60000/BeatsPerMinute;
  
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_10x20_tr);
  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
  u8g2.drawStr(1,28,  tmp_string); //displays the int which is now a character following was center: u8g2.drawStr(39,28,  tmp_string);
  u8g2.setFont(u8g2_font_10x20_tr);
  u8g2.drawStr(65,28, "BPM");
  u8g2.sendBuffer();
}


//**************************************************************Setup
void  setup(){ 
  pinMode(Metronome_LED, OUTPUT);
  
  pinMode(InterruptButtonForEvaluate,  INPUT_PULLUP); //internal pull up resistor
  pinMode(PositiveButton1, INPUT_PULLUP);
  pinMode(PositiveButton10, INPUT_PULLUP);
  pinMode(NegativeButton1, INPUT_PULLUP);
  pinMode(NegativeButton10, INPUT_PULLUP);
  pinMode(BuzzerPin, OUTPUT);
  //write other pins with pullups as well? yes i think so
  
  //setting pins  as input with pull up resistors
  /*
  pinMode(PositiveButton1, INPUT);
  pinMode(PositiveButton10, INPUT);
  pinMode(NegativeButton1, INPUT);
  pinMode(NegativeButton10,  INPUT);
  */
  digitalWrite(NegativeButton1, HIGH);
  digitalWrite(NegativeButton10,  HIGH);
  digitalWrite(PositiveButton1, HIGH);
  digitalWrite(PositiveButton10,  HIGH);
  
  //any button pushed caused the EvaluateButton function to trigger
  attachInterrupt(digitalPinToInterrupt(InterruptButtonForEvaluate), EvaluateButton,  LOW); //means pin state went to ground on interupt pin
  
  u8g2.begin();
  
  /*Font Notes:*******************************************************
  
  Display is 128 x 32 pixels, starts counting from top left closest to SDA  pin
  format of code is: (character x axis higher means more to right, character  y axis higher means more down, character to send)
  
  Note: on drawStr(controls  x centering, controls y height, controls text)
    //u8g2.setFont(u8g2_font_ncenB08_tr);	//  This was font in setet
    //u8g2.setFont(u8g2_font_ncenB14_tf); //setting font  coppied from reference (does this work?) text to large and goes to high
    //u8g2.setFont(u8g_font_courB08);  //Setting font (does this work?!) very small text
  
  *********************************************************************/
  
  
  //General format to add text requires next three lines
  u8g2.clearBuffer();  //clear function
  u8g2.setFont(u8g2_font_9x18_tr);
  u8g2.drawStr(5,25,"Time  To Beat"); //what to send
  u8g2.sendBuffer();	//actual transfer aka. send
  delay(2000);
  u8g2.clearBuffer();  //clear function
  u8g2.setFont(u8g2_font_9x18_tr);  //trying different font
  u8g2.drawStr(0,25,"By Ryan Da Man"); //what to send
  u8g2.sendBuffer();	//actual transfer aka. send
  delay(1000);
  
  
  //writes on initial setup BPM
  u8g2.clearBuffer();
  u8g2.setFont(u8g2_font_10x20_tr);  //ncenB24_tf
  itoa(BeatsPerMinute, tmp_string, 10); //converts int to character
  u8g2.drawStr(1,28, tmp_string); //displays the int which is now a character following  was center: u8g2.drawStr(39,28, tmp_string);
  u8g2.setFont(u8g2_font_10x20_tr);  //ncenB18_tf
  u8g2.drawStr(65,28, "BPM");
  u8g2.sendBuffer();

}

//next  lines are personal notes to reduce sketch size by changing fonts on display
//70%  with 3 types; 25% with all 9x18_tn; 9x18_tr 28%; with a 10x20_tr is 33%
// current  prior to pinchange function, and removing one interupt, adding +10 &-10 function;  went to 32%


//**************************************************************Main  Loop
void loop(){
  
  {Metronome_Blink();} //just one line of code to  do it all :)
  
}

Downloadable files

Fritzing PDF printout of configuration

Note that the the push button pins are configured with the internal pull up resistor and no resistor is on that line. Forget to have it as a pull up or add in a resistor would be really bad. (sketch configured for pull up resistors) Also I omitted the redundant blue LEDs and instead of yellow LEDs put red in, any color would work.

Fritzing PDF printout of configuration

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