RGB light

Language:	English  • 中文

Objective This tutorial will teach you using the Processing to control RGB LED, then use a color selector to control the color. Equipment Microduino-Core Microduino-FT232R Other equipment USB cable one RGB LED one 330Ω resistor one Bread one Breadboard Jumper onebox Schematic Program https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Processing/RGBLED Debug Step 1：Set up hardware system, as follows: Step 2：Explain the code: //Display palette function void drawShadeWheel() { for (int j = 0; j < steps; j++) { color[] cols = { color(255-(255/steps)*j, 255-(255/steps)*j, 0), color(255-(255/steps)*j, (255/1.5)-((255/1.5)/steps)*j, 0), color(255-(255/steps)*j, (255/2)-((255/2)/steps)*j, 0), color(255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j, 0), color(255-(255/steps)*j, 0, 0), color(255-(255/steps)*j, 0, (255/2)-((255/2)/steps)*j), color(255-(255/steps)*j, 0, 255-(255/steps)*j), color((255/2)-((255/2)/steps)*j, 0, 255-(255/steps)*j), color(0, 0, 255-(255/steps)*j), color(0, 255-(255/steps)*j, (255/2.5)-((255/2.5)/steps)*j), color(0, 255-(255/steps)*j, 0), color((255/2)-((255/2)/steps)*j, 255-(255/steps)*j, 0) }; for (int i = 0; i < segs; i++) { fill(cols[i]); arc(width/2, height/2, radius, radius, interval*i+rotAdjust, interval*(i+1)+rotAdjust); } radius -= segWidth; } } //Check whether the mouse movement through the interface boolean mouseOverRect() { // Test if mouse is over square return ((mouseX >= 10) && (mouseX <= 190) && (mouseY >= 10) && (mouseY <=190)); } //Got the RGB value, write to pin9,10,11 void draw() { // nothing happens here if (mouseOverRect() == true) { color targetColor = get(mouseX, mouseY); // get the component values: int r = int(red(targetColor)); int g = int(green(targetColor)); int b = int(blue(targetColor)); // analogWirte to pin arduino.analogWrite(9, r); arduino.analogWrite(10, g); arduino.analogWrite(11, b); } } Step 3: Compile the code and download it. Step 4: After runing, will display a palette, click on the color of your choice, observe the color of the LED light. Result A color selector will display on screen, as follows: Video