#define POTENTIOMETER 2 // Connect the potentiometer — or pot — on analog PIN 2. #define LED 13 // Tap into the built-in LED, which is connected on digital PIN 13. #define BAUD_RATE 9600 // Define the ...

This is tutorial number 1 from our series of Arduino tutorials and in this part I will talk about blinking an LED using the one already available on the Arduino Uno board or using an external LED to ...

It is a pretty common first project to use an Arduino (or similar) to blink an LED. Which, of course, brings taunts of: you could have used a 555! You can, of course, also use any sort of oscillato… ...

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We set the potentiometer pin as 0 (A0 on the Arduino Uno board), the CONTROL variable is the voltage that is used to cotrol the led brightness of the speed of the fan. In the setup() function the ...