Learn step-by-step to program your Arduino. Each tutorial contains the source code, what parts you need and where you can buy them. You start off with a simple LED and continue till you build your own weather station, computer game and many more.

Programming Arduino UNO Timers. In this tutorial we will use the TIMER OVERFLOW INTERRUPT and use it to blink the LED ON and OFF for certain duration by adjusting the preloader value (TCNT1) using pushbuttons. Complete code for Arduino Timer is given at t

Arduino pin 3 is used to turn the transistor on and off and is given the name 'motorPin' in the sketch. Result. Motor will spin in full speed when the Arduino pin number 3 goes high. Motor Speed Control. Following is the schematic diagram of a DC