Name: SunFounder ESP32
Brand: SunFounder
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SunFounder ESP32 Starter Kit

Write the RGB value into color_set(), you will be able to see the RGB light up the colors you want.

How it works?

1. Deﬁne the GPIO pins, the PWM channels and the frequency (in Hz) and resolution (in bits).

// Define RGB LED pins

const int redPin = 27;

const int greenPin = 26;

const int bluePin = 25;

// Define PWM channels

const int redChannel = 0;

const int greenChannel = 1;

const int blueChannel = 2;

// Define PWM frequency and resolution

const int freq = 5000;

const int resolution = 8;

2. The setup() function initializes the PWM channels with the speciﬁed frequency and resolution, and then at-

taches the LED pins to their corresponding PWM channels.

void setup() {

// Set up PWM channels

ledcSetup(redChannel, freq, resolution);

ledcSetup(greenChannel, freq, resolution);

ledcSetup(blueChannel, freq, resolution);

// Attach pins to corresponding PWM channels

ledcAttachPin(redPin, redChannel);

ledcAttachPin(greenPin, greenChannel);

ledcAttachPin(bluePin, blueChannel);

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1.7. 2.3 Colorful Light 29

SunFounder ESP32 User Manual

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