3. Arduino-BlueDisplayArduino library for the BlueDisplay App. The App converts your smartphone into an Android remote touch display.
5. TalkieRefurbished Arduino version of the Talkie library from Peter Knight.
7. ATtinySerialOutMinimal bit-bang send serial 38400/115200 baud for 1MHz or 115200/230400 baud for 8 or 16MHz ATtiny clock