Arduino with an external Switch This is part of the starter blog for Arduino basics. Check out here to see all of them. In many situations we need an external switch to control something in the circuit. Say you make
The very first thing you can do when you get your hands on an Arduino is to blink an LED. This sets the basic and gives you an idea how things work. Lets get started!
Transistor circuits that we are going to make will use a 5V power supply. We somehow need to turn the 9V battery usually available in market to give us a 5V supply. We are going to use the 7805 IC for that. Lets get started!
Once you have got our hands on an Arduino, to start working on it, of course we would have to set it up and it’s software (IDE)! Lets get started!