Скачать или смотреть Tinkercad Circuit Tutorial 4: How to control Brightness of the LED / Fading

First, you need to set up the Arduino board by connecting it to the computer and uploading the Arduino IDE.

Next, you need to connect the LED to the Arduino board.

Then, you need to open the Arduino IDE and write the following code:

int led = 9; // the pin that the LED is attached to int brightness = 0; // how bright the LED is int fadeAmount = 5; // how many points to fade the LED by // the setup routine runs once when you press reset: void setup() { // declare pin 9 to be an output: pinMode(led, OUTPUT); } // the loop routine runs over and over again forever: void loop() { // set the brightness of pin 9: analogWrite(led, brightness); // change the brightness for next time through the loop: brightness = brightness + fadeAmount; // reverse the direction of the fading at the ends of the fade: if (brightness == 0 || brightness == 255) { fadeAmount = -fadeAmount ; } // wait for 30 milliseconds to see the dimming effect delay(30); }

This code will control the brightness of the LED using PWM.

TinkerCad is a free, easy-to-use app for 3D design, electronics, and coding. It's used by teachers, kids, hobbyists, and designers to imagine, design, and make anything!
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