RGB with Arduino

Program the RGB value of the LED.

Apr 27, 2019

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2 respects

lights

Components and supplies

Resistor 220 ohm

RGB Diffused Common Anode

Arduino UNO

I2C 16x2 Arduino LCD Display Module

Tactile Switch, Top Actuated

Apps and platforms

Arduino IDE

Project description

Code

Untitled file

arduino

Press the value buttons to choose the red value, press the next button to switch to green, and then to blue. when done, press the ok button. If you have a mistake, press the reset key.

1//libraries
2#include <LiquidCrystal_I2C.h>
3
4//define lcd pin
5  and size
6LiquidCrystal_I2C lcd(0x27, 16, 2);
7
8//led pin
9int red = 11;
10int
11  green = 10;
12int blue = 9;
13
14//buttons pin
15int pOne = 7;
16int pTen =
17  6;
18int pHundred = 5;
19int pNext = 4;
20int pOK = 3;
21int pReset = 2;
22
23//value
24  of button
25int valOne = 0;
26int valTen = 0;
27int valHundred = 0;
28int valNext
29  = 0;
30int valOK = 0;
31int valReset = 0;
32
33//value that says what color
34  it is
35int color = 0;
36
37//value of the led
38int valRed = 0;
39int valGreen
40  = 0;
41int valBlue = 0;
42
43void setup() {
44 //led
45 pinMode(red, OUTPUT);
46
47  pinMode(green, OUTPUT);
48 pinMode(blue, OUTPUT);
49 //buttons
50 pinMode(pOne,
51  INPUT);
52 pinMode(pTen, INPUT);
53 pinMode(pHundred, INPUT);
54 pinMode(pNext,
55  INPUT);
56 pinMode(pOK, INPUT);
57 pinMode(pReset, INPUT);
58 //lcd setup
59
60  lcd.init();
61 lcd.backlight();
62 lcd.setCursor(0, 0);
63 lcd.print("R:");
64
65  lcd.setCursor(7, 0);
66 lcd.print("G:");
67 lcd.setCursor(0, 1);
68 lcd.print("B:");
69}
70
71void
72  loop() {
73 //buttons value
74 valOne = digitalRead(pOne);
75 valTen = digitalRead(pTen);
76
77  valHundred = digitalRead(pHundred);
78 valNext = digitalRead(pNext);
79 valOK
80  = digitalRead(pOK);
81 valReset = digitalRead(pReset);
82
83 if (valNext == 1)
84  {  //If the "Next" button is pressed, the value of the color variable increases
85
86    color = color + 1;
87   delay(300);
88 }
89 if (color >= 3) { //If the value
90  of the "color" variable is greater than or equal to 3, it returns the value of
91  the variable to 0. Because there are three colors
92   color = 0;
93 }
94 //set
95  a maximum brightness value of each color
96 if (valRed >= 256) {
97   valRed =
98  0;
99   lcd.setCursor(3, 0);
100   lcd.print("   ");  //clear the value in the
101  display
102 }
103 if (valGreen >= 256) {
104   valGreen = 0;
105   lcd.setCursor(10,
106  0);
107   lcd.print("   ");
108 }
109 if (valBlue >= 256) {
110   valBlue = 0;
111
112   lcd.setCursor(3, 1);
113   lcd.print("   ");
114 }
115 //If the color chosen
116  is red and the button pressed is pOne increases the value of the variable. And so
117  on
118 if (color == 0 and valOne == 1) {
119   valRed = valRed + 1;
120   delay(300);
121
122  }
123 if (color == 0 and valTen == 1) {
124   valRed = valed + 10;
125   delay(300);
126
127  }
128 if (color == 0 and valHundred == 1) {
129   valRed = valRed + 100;
130   delay(300);
131
132  }
133 if (color == 1 and valOne == 1) {
134   valVGreen = valGreen + 1;
135   delay(300);
136
137  }
138 if (color == 1 and valTen == 1) {
139   valGreen = valGreen + 10;
140   delay(300);
141
142  }
143 if (color == 1 and valHundred == 1) {
144   valGreen = valGreen + 100;
145
146   delay(300);
147 }
148 if (color == 2 and valOne == 1) {
149   valBlue = valBlue
150  + 1;
151   delay(300);
152 }
153 if (colore == 2 and valTen == 1) {
154   valBlue
155  = valBlue + 10;
156   delay(300);
157 }
158 if (color == 2 and valHundred == 1)
159  {
160   valBlue= valBlue + 100;
161   delay(300);
162 }
163 //write the rgb values
164  on the LCD
165 lcd.setCursor(3, 0);
166 lcd.print(valRed);
167 lcd.setCursor(10,
168  0);
169 lcd.print(valGreen);
170 lcd.setCursor(3, 1);
171 lcd.print(valBlue);
172
173  if (valOK == 1) {  //If the "OK" button is pressed, the LED takes on the color
174  of the variable values
175   analogWrite(red, valRed);
176   analogWrite(green,
177  valGreen);
178   analogWrite(blue, valBlue);
179 }
180 if (valReset == 1) { //if
181  the "Reset" button is pressed, each value is reset
182   digitalWrite(red, LOW);
183
184   digitalWrite(green, LOW);
185   digitalWrite(blue, LOW);
186   valRed = 0;
187
188   valGreen = 0;
189   valBlue = 0;
190   color = 0;
191   lcd.setCursor(3, 0);
192
193   lcd.print("   ");
194   lcd.setCursor(10, 0);
195   lcd.print("   ");
196
197   lcd.setCursor(3, 1);
198   lcd.print("   ");
199 }
200}

//libraries
#include <LiquidCrystal_I2C.h>

//define lcd pin
  and size
LiquidCrystal_I2C lcd(0x27, 16, 2);

//led pin
int red = 11;
int
  green = 10;
int blue = 9;

//buttons pin
int pOne = 7;
int pTen =
  6;
int pHundred = 5;
int pNext = 4;
int pOK = 3;
int pReset = 2;

//value
  of button
int valOne = 0;
int valTen = 0;
int valHundred = 0;
int valNext
  = 0;
int valOK = 0;
int valReset = 0;

//value that says what color
  it is
int color = 0;

//value of the led
int valRed = 0;
int valGreen
  = 0;
int valBlue = 0;

void setup() {
 //led
 pinMode(red, OUTPUT);

  pinMode(green, OUTPUT);
 pinMode(blue, OUTPUT);
 //buttons
 pinMode(pOne,
  INPUT);
 pinMode(pTen, INPUT);
 pinMode(pHundred, INPUT);
 pinMode(pNext,
  INPUT);
 pinMode(pOK, INPUT);
 pinMode(pReset, INPUT);
 //lcd setup

  lcd.init();
 lcd.backlight();
 lcd.setCursor(0, 0);
 lcd.print("R:");

  lcd.setCursor(7, 0);
 lcd.print("G:");
 lcd.setCursor(0, 1);
 lcd.print("B:");
}

void
  loop() {
 //buttons value
 valOne = digitalRead(pOne);
 valTen = digitalRead(pTen);

  valHundred = digitalRead(pHundred);
 valNext = digitalRead(pNext);
 valOK
  = digitalRead(pOK);
 valReset = digitalRead(pReset);

 if (valNext == 1)
  {  //If the "Next" button is pressed, the value of the color variable increases

    color = color + 1;
   delay(300);
 }
 if (color >= 3) { //If the value
  of the "color" variable is greater than or equal to 3, it returns the value of
  the variable to 0. Because there are three colors
   color = 0;
 }
 //set
  a maximum brightness value of each color
 if (valRed >= 256) {
   valRed =
  0;
   lcd.setCursor(3, 0);
   lcd.print("   ");  //clear the value in the
  display
 }
 if (valGreen >= 256) {
   valGreen = 0;
   lcd.setCursor(10,
  0);
   lcd.print("   ");
 }
 if (valBlue >= 256) {
   valBlue = 0;

   lcd.setCursor(3, 1);
   lcd.print("   ");
 }
 //If the color chosen
  is red and the button pressed is pOne increases the value of the variable. And so
  on
 if (color == 0 and valOne == 1) {
   valRed = valRed + 1;
   delay(300);

  }
 if (color == 0 and valTen == 1) {
   valRed = valed + 10;
   delay(300);

  }
 if (color == 0 and valHundred == 1) {
   valRed = valRed + 100;
   delay(300);

  }
 if (color == 1 and valOne == 1) {
   valVGreen = valGreen + 1;
   delay(300);

  }
 if (color == 1 and valTen == 1) {
   valGreen = valGreen + 10;
   delay(300);

  }
 if (color == 1 and valHundred == 1) {
   valGreen = valGreen + 100;

   delay(300);
 }
 if (color == 2 and valOne == 1) {
   valBlue = valBlue
  + 1;
   delay(300);
 }
 if (colore == 2 and valTen == 1) {
   valBlue
  = valBlue + 10;
   delay(300);
 }
 if (color == 2 and valHundred == 1)
  {
   valBlue= valBlue + 100;
   delay(300);
 }
 //write the rgb values
  on the LCD
 lcd.setCursor(3, 0);
 lcd.print(valRed);
 lcd.setCursor(10,
  0);
 lcd.print(valGreen);
 lcd.setCursor(3, 1);
 lcd.print(valBlue);

  if (valOK == 1) {  //If the "OK" button is pressed, the LED takes on the color
  of the variable values
   analogWrite(red, valRed);
   analogWrite(green,
  valGreen);
   analogWrite(blue, valBlue);
 }
 if (valReset == 1) { //if
  the "Reset" button is pressed, each value is reset
   digitalWrite(red, LOW);

   digitalWrite(green, LOW);
   digitalWrite(blue, LOW);
   valRed = 0;

   valGreen = 0;
   valBlue = 0;
   color = 0;
   lcd.setCursor(3, 0);

   lcd.print("   ");
   lcd.setCursor(10, 0);
   lcd.print("   ");

   lcd.setCursor(3, 1);
   lcd.print("   ");
 }
}

Untitled file

arduino

Press the value buttons to choose the red value, press the next button to switch to green, and then to blue. when done, press the ok button. If you have a mistake, press the reset key.

1//libraries
2#include <LiquidCrystal_I2C.h>
3
4//define lcd pin  and size
5LiquidCrystal_I2C lcd(0x27, 16, 2);
6
7//led pin
8int red = 11;
9int  green = 10;
10int blue = 9;
11
12//buttons pin
13int pOne = 7;
14int pTen =  6;
15int pHundred = 5;
16int pNext = 4;
17int pOK = 3;
18int pReset = 2;
19
20//value  of button
21int valOne = 0;
22int valTen = 0;
23int valHundred = 0;
24int valNext  = 0;
25int valOK = 0;
26int valReset = 0;
27
28//value that says what color  it is
29int color = 0;
30
31//value of the led
32int valRed = 0;
33int valGreen  = 0;
34int valBlue = 0;
35
36void setup() {
37 //led
38 pinMode(red, OUTPUT);
39  pinMode(green, OUTPUT);
40 pinMode(blue, OUTPUT);
41 //buttons
42 pinMode(pOne,  INPUT);
43 pinMode(pTen, INPUT);
44 pinMode(pHundred, INPUT);
45 pinMode(pNext,  INPUT);
46 pinMode(pOK, INPUT);
47 pinMode(pReset, INPUT);
48 //lcd setup
49  lcd.init();
50 lcd.backlight();
51 lcd.setCursor(0, 0);
52 lcd.print("R:");
53  lcd.setCursor(7, 0);
54 lcd.print("G:");
55 lcd.setCursor(0, 1);
56 lcd.print("B:");
57}
58
59void  loop() {
60 //buttons value
61 valOne = digitalRead(pOne);
62 valTen = digitalRead(pTen);
63  valHundred = digitalRead(pHundred);
64 valNext = digitalRead(pNext);
65 valOK  = digitalRead(pOK);
66 valReset = digitalRead(pReset);
67
68 if (valNext == 1)  {  //If the "Next" button is pressed, the value of the color variable increases
69    color = color + 1;
70   delay(300);
71 }
72 if (color >= 3) { //If the value  of the "color" variable is greater than or equal to 3, it returns the value of  the variable to 0. Because there are three colors
73   color = 0;
74 }
75 //set  a maximum brightness value of each color
76 if (valRed >= 256) {
77   valRed =  0;
78   lcd.setCursor(3, 0);
79   lcd.print("   ");  //clear the value in the  display
80 }
81 if (valGreen >= 256) {
82   valGreen = 0;
83   lcd.setCursor(10,  0);
84   lcd.print("   ");
85 }
86 if (valBlue >= 256) {
87   valBlue = 0;
88   lcd.setCursor(3, 1);
89   lcd.print("   ");
90 }
91 //If the color chosen  is red and the button pressed is pOne increases the value of the variable. And so  on
92 if (color == 0 and valOne == 1) {
93   valRed = valRed + 1;
94   delay(300);
95  }
96 if (color == 0 and valTen == 1) {
97   valRed = valed + 10;
98   delay(300);
99  }
100 if (color == 0 and valHundred == 1) {
101   valRed = valRed + 100;
102   delay(300);
103  }
104 if (color == 1 and valOne == 1) {
105   valVGreen = valGreen + 1;
106   delay(300);
107  }
108 if (color == 1 and valTen == 1) {
109   valGreen = valGreen + 10;
110   delay(300);
111  }
112 if (color == 1 and valHundred == 1) {
113   valGreen = valGreen + 100;
114   delay(300);
115 }
116 if (color == 2 and valOne == 1) {
117   valBlue = valBlue  + 1;
118   delay(300);
119 }
120 if (colore == 2 and valTen == 1) {
121   valBlue  = valBlue + 10;
122   delay(300);
123 }
124 if (color == 2 and valHundred == 1)  {
125   valBlue= valBlue + 100;
126   delay(300);
127 }
128 //write the rgb values  on the LCD
129 lcd.setCursor(3, 0);
130 lcd.print(valRed);
131 lcd.setCursor(10,  0);
132 lcd.print(valGreen);
133 lcd.setCursor(3, 1);
134 lcd.print(valBlue);
135  if (valOK == 1) {  //If the "OK" button is pressed, the LED takes on the color  of the variable values
136   analogWrite(red, valRed);
137   analogWrite(green,  valGreen);
138   analogWrite(blue, valBlue);
139 }
140 if (valReset == 1) { //if  the "Reset" button is pressed, each value is reset
141   digitalWrite(red, LOW);
142   digitalWrite(green, LOW);
143   digitalWrite(blue, LOW);
144   valRed = 0;
145   valGreen = 0;
146   valBlue = 0;
147   color = 0;
148   lcd.setCursor(3, 0);
149   lcd.print("   ");
150   lcd.setCursor(10, 0);
151   lcd.print("   ");
152   lcd.setCursor(3, 1);
153   lcd.print("   ");
154 }
155}

//libraries
#include <LiquidCrystal_I2C.h>

//define lcd pin  and size
LiquidCrystal_I2C lcd(0x27, 16, 2);

//led pin
int red = 11;
int  green = 10;
int blue = 9;

//buttons pin
int pOne = 7;
int pTen =  6;
int pHundred = 5;
int pNext = 4;
int pOK = 3;
int pReset = 2;

//value  of button
int valOne = 0;
int valTen = 0;
int valHundred = 0;
int valNext  = 0;
int valOK = 0;
int valReset = 0;

//value that says what color  it is
int color = 0;

//value of the led
int valRed = 0;
int valGreen  = 0;
int valBlue = 0;

void setup() {
 //led
 pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
 pinMode(blue, OUTPUT);
 //buttons
 pinMode(pOne,  INPUT);
 pinMode(pTen, INPUT);
 pinMode(pHundred, INPUT);
 pinMode(pNext,  INPUT);
 pinMode(pOK, INPUT);
 pinMode(pReset, INPUT);
 //lcd setup
  lcd.init();
 lcd.backlight();
 lcd.setCursor(0, 0);
 lcd.print("R:");
  lcd.setCursor(7, 0);
 lcd.print("G:");
 lcd.setCursor(0, 1);
 lcd.print("B:");
}

void  loop() {
 //buttons value
 valOne = digitalRead(pOne);
 valTen = digitalRead(pTen);
  valHundred = digitalRead(pHundred);
 valNext = digitalRead(pNext);
 valOK  = digitalRead(pOK);
 valReset = digitalRead(pReset);

 if (valNext == 1)  {  //If the "Next" button is pressed, the value of the color variable increases
    color = color + 1;
   delay(300);
 }
 if (color >= 3) { //If the value  of the "color" variable is greater than or equal to 3, it returns the value of  the variable to 0. Because there are three colors
   color = 0;
 }
 //set  a maximum brightness value of each color
 if (valRed >= 256) {
   valRed =  0;
   lcd.setCursor(3, 0);
   lcd.print("   ");  //clear the value in the  display
 }
 if (valGreen >= 256) {
   valGreen = 0;
   lcd.setCursor(10,  0);
   lcd.print("   ");
 }
 if (valBlue >= 256) {
   valBlue = 0;
   lcd.setCursor(3, 1);
   lcd.print("   ");
 }
 //If the color chosen  is red and the button pressed is pOne increases the value of the variable. And so  on
 if (color == 0 and valOne == 1) {
   valRed = valRed + 1;
   delay(300);
  }
 if (color == 0 and valTen == 1) {
   valRed = valed + 10;
   delay(300);
  }
 if (color == 0 and valHundred == 1) {
   valRed = valRed + 100;
   delay(300);
  }
 if (color == 1 and valOne == 1) {
   valVGreen = valGreen + 1;
   delay(300);
  }
 if (color == 1 and valTen == 1) {
   valGreen = valGreen + 10;
   delay(300);
  }
 if (color == 1 and valHundred == 1) {
   valGreen = valGreen + 100;
   delay(300);
 }
 if (color == 2 and valOne == 1) {
   valBlue = valBlue  + 1;
   delay(300);
 }
 if (colore == 2 and valTen == 1) {
   valBlue  = valBlue + 10;
   delay(300);
 }
 if (color == 2 and valHundred == 1)  {
   valBlue= valBlue + 100;
   delay(300);
 }
 //write the rgb values  on the LCD
 lcd.setCursor(3, 0);
 lcd.print(valRed);
 lcd.setCursor(10,  0);
 lcd.print(valGreen);
 lcd.setCursor(3, 1);
 lcd.print(valBlue);
  if (valOK == 1) {  //If the "OK" button is pressed, the LED takes on the color  of the variable values
   analogWrite(red, valRed);
   analogWrite(green,  valGreen);
   analogWrite(blue, valBlue);
 }
 if (valReset == 1) { //if  the "Reset" button is pressed, each value is reset
   digitalWrite(red, LOW);
   digitalWrite(green, LOW);
   digitalWrite(blue, LOW);
   valRed = 0;
   valGreen = 0;
   valBlue = 0;
   color = 0;
   lcd.setCursor(3, 0);
   lcd.print("   ");
   lcd.setCursor(10, 0);
   lcd.print("   ");
   lcd.setCursor(3, 1);
   lcd.print("   ");
 }
}

Downloadable files

Schematic

Fritziong Schematic

Schematic

Comments

Only logged in users can leave comments

Anonymous user

2 years ago

Hi TE_Tatan, I downloaded the code and tried to verify it before uploading it into my Arduino Uno. Unfortunately, I got the following error message; it highlighted this line of code: led.init(); and read "within this context" in the orange error line at the bottom of the sketch. Hence, I am unable to upload the code. Any idea what this is about? I have an Apple Desktop computer, running macOS High Sierra, v.10.13.6 and am using Arduino v.1.8.9 IDE. Also, is it possible to show the wiring of the components using the Fritzing.app? I think some of us (me included have some trouble reading the schematic). It's easier to understand if it is shown with Fritzing. I'm most confused with how the buttons are arranged. Thanks for any help you can provide. Dan

TE_Tatan

2 years ago

try to write lcd.init(); twice, like this: //lcd setup lcd.init(); lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); I will add the fritzing schematic

Anonymous user

6 years ago

TE_Tatan

2 years ago

try to write lcd.init(); twice, like this: //lcd setup lcd.init(); lcd.init(); lcd.backlight(); lcd.setCursor(0, 0); I will add the fritzing schematic

Anonymous user

6 years ago

did u make a video how it works in actual? also you marked it as 'full instructions provided' but there is no explanation of scheamtics and code

TE_Tatan

2 years ago

Well, I didn't make a video. For the schematics, all resistances are 220 ohm, there are buttons, an i2c display and an rgb led. And for the code I will make it more understandable for everyone.

TE_Tatan

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