The transmitter side has a button. The receiver side has a LED. When the button is pressed on the one side, the LED is switched on, on the other side. To program the ATtinys I used AVR Studio 7.0, ...

Here's a completely rewritten "Arduino as ISP" sketch that can program the ATtiny85, in situ, on the Digispark board via its 6- and 3- pin connectors. It uses an Arduino Uno R3 as the programmer, and ...

If you are looking for a project to keep you busy this weekend you might be interested in a new 3D printed ring watch that has been created and published to the Instructables website and uses a ...