LED test pattern on an attiny2313, programmed via ArduinoISP. Being able to program the attiny2313 frees me from being bound to the Arduino environment, so I can use these much simpler devices in slave units.

LED test pattern on an attiny2313, programmed via ArduinoISP. Being able to program the attiny2313 frees me from being bound to the Arduino environment, so I can use these much simpler devices in slave units.