Components and supplies
Arduino Nano
0.91 Inch 128x32 IIC I2C Blue OLED LCD Display DIY Oled Module SSD1306 Driver IC DC 3.3V 5V For Arduino PIC
Resistor 470 ohm
3mm LED
10kOhm potentiometer
Piezo Buzzer
Tools and machines
Soldering kit
Apps and platforms
Arduino IDE
Project description
Code
Metronome code
cpp
.
1/* 2 3 For Loop Iteration 4 5 Demonstrates the use of a for() loop. 6 7 Lights multiple LEDs in sequence, then in reverse. 8 9 The circuit: 10 11 - LEDs from pins 2 through 7 to ground 12 13 created 2006 14 15 by David A. Mellis 16 17 modified 30 Aug 2011 18 19 by Tom Igoe 20 21 This example code is in the public domain. 22 23 https://www.arduino.cc/built-in-examples/ForLoopIteration 24 25*/ 26#include <SPI.h> 27#include <Wire.h> 28#include <Adafruit_GFX.h> 29#include <Adafruit_SSD1306.h> 30#define SCREEN_WIDTH 128 // OLED display width, in pixels 31#define SCREEN_HEIGHT 64 // OLED display height, in pixels 32#define OLED_RESET -1 33#define SCREEN_ADDRESS 0x3C 34Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); 35int timer = 0; // The higher the number, the slower the timing. 36int bpm = 0; 37const unsigned char zmaj [] PROGMEM = { 38 // 'zmaj7 60x60, 128x64px 39 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 40 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 41 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 42 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 43 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 44 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 45 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 46 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 47 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 48 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 49 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x80, 0x00, 0xbf, 0xff, 0xff, 0xff, 0xff, 0xff, 50 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0x00, 0x00, 0x5f, 0xff, 0xff, 0xff, 0xff, 0xff, 51 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x04, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 52 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x0c, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 53 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x00, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 54 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x00, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 55 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x00, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 56 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x80, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 57 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x40, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 58 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x80, 0x60, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 59 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x80, 0x30, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 60 0xff, 0xff, 0xff, 0xff, 0xff, 0xe2, 0x3f, 0xfa, 0x80, 0x0f, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff, 61 0xff, 0xff, 0xff, 0xff, 0xff, 0xed, 0xbf, 0xf4, 0x80, 0x00, 0x2f, 0xff, 0xff, 0xff, 0xff, 0xff, 62 0xff, 0xff, 0xff, 0xff, 0xff, 0xd9, 0x3f, 0xe9, 0x80, 0x00, 0x5f, 0xff, 0xff, 0xff, 0xff, 0xff, 63 0xff, 0xff, 0xff, 0xff, 0xff, 0xa2, 0xff, 0xd3, 0x00, 0xff, 0xbf, 0xff, 0xff, 0xff, 0xff, 0xff, 64 0xff, 0xff, 0xff, 0xff, 0xff, 0x85, 0xff, 0xa6, 0x01, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 65 0xff, 0xff, 0xff, 0xff, 0xff, 0x85, 0xff, 0x4c, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 66 0xff, 0xff, 0xff, 0xff, 0xff, 0x85, 0xfe, 0x98, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 67 0xff, 0xff, 0xff, 0xff, 0xff, 0x85, 0xfd, 0x30, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 68 0xff, 0xff, 0xff, 0xff, 0xff, 0x82, 0x02, 0x60, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 69 0xff, 0xff, 0xff, 0xff, 0xff, 0xa1, 0xfc, 0x80, 0x01, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 70 0xff, 0xff, 0xff, 0xff, 0xff, 0xd0, 0x41, 0x80, 0x00, 0xf7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 71 0xff, 0xff, 0xff, 0xff, 0xff, 0xe8, 0xbe, 0x00, 0x04, 0x0b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 72 0xff, 0xff, 0xff, 0xff, 0xff, 0xf4, 0x40, 0x00, 0x0b, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 73 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x00, 0x00, 0x05, 0x23, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 74 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x00, 0x00, 0x47, 0xcf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 75 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x00, 0x00, 0x87, 0x8f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 76 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0x00, 0x00, 0x8b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 77 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x80, 0x00, 0x97, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 78 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x4c, 0x01, 0xaf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 79 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xa6, 0x03, 0x5f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 80 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xd3, 0x04, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 81 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe9, 0x8c, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 82 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf4, 0x88, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 83 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x90, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 84 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x90, 0x3d, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 85 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x8a, 0x05, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 86 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x87, 0x02, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 87 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfa, 0x01, 0xff, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 88 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf9, 0x00, 0x81, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 89 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xff, 0x9f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 90 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x5f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 91 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 92 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 93 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 94 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 95 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 96 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 97 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 98 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 99 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 100 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 101 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 102 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff 103}; 104void setup() { 105Serial.begin(9600); 106 // use a for loop to initialize each pin as an output: 107 display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS); 108 display.clearDisplay(); 109 display.drawBitmap(0, 0,zmaj, 128, 64, WHITE); // display.drawBitmap(x position, y position, bitmap data, bitmap width, bitmap height, color) 110 display.display(); 111 delay(2000); 112 display.clearDisplay(); 113 display.setTextSize(2); 114 display.setTextColor(WHITE); 115 display.setCursor(22,10); 116 display.println("mircemk");// Print text 117 display.setCursor(10,40); 118 display.println("METRONOME"); 119 display.display(); 120 delay(2000); 121 122 for (int thisPin = 2; thisPin < 10; thisPin++) { 123 124 pinMode(thisPin, OUTPUT); 125 126 } 127} 128 129void loop() { 130 131 int sensorValue = analogRead(A0); 132 byte timer = map(sensorValue, 0, 1023, 20,125); 133 134 bpm=map(timer, 20 ,125 , 160 , 60); 135 Serial.println(bpm); 136 137 display.clearDisplay(); 138 display.setTextSize(3); 139 display.setTextColor(WHITE); 140 display.setCursor(35,5); 141 display.println("BPM:"); 142 display.setCursor(15,40); 143 display.println(bpm); 144 display.setTextSize(2); 145 display.setCursor(73,45); 146 display.println("/min"); 147 148 display.display(); 149 150 // loop from the lowest pin to the highest: 151 152 for (int thisPin = 2; thisPin < 10; thisPin++) { 153 154 // turn the pin on: 155 156 digitalWrite(thisPin, HIGH); 157 158 delay(timer); 159 160 // turn the pin off: 161 162 digitalWrite(thisPin, LOW); 163 164 } 165 166 // loop from the highest pin to the lowest: 167 168 for (int thisPin = 9; thisPin >= 2; thisPin--) { 169 170 // turn the pin on: 171 172 digitalWrite(thisPin, HIGH); 173 174 delay(timer); 175 176 // turn the pin off: 177 178 digitalWrite(thisPin, LOW); 179 180 } 181}
Documentation
Schematic
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Schematic.jpg
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