====== Using Arduino on a smaller Microcontroller ======


Sometimes a full size Arduino is a bit on an overkill if for example you just want to blink one LED. 

Fortunately there is a smaller and cheaper version of microcontroller used by Arduino called the ATtiny. We have included one in the workshop kit, it's a small 8 pin chip that is stuck into a foam pad.

You can program this chip using your Arduino. Instructions are provided [[http://highlowtech.org/?p=1695|here]] and you need to follow the sections relevant to using Arduino (as ISP) to an ATtiny.

| {{workshops:challenge_yourself.jpg?200x0}}| **Easier** \\ **(1)** Flash an LED on/off once a second using just your ATtiny.\\ \\ **Intermediate** \\ **(2)** Adjust the speed of flashing by using a potentiometer (ask a helper for one if you don't have one from a previous workshop kit.) |