This time it was [David Wehr] and AudioSerial: a simple way of outputting raw serial data over the audio ... have the USB-to-TTL capabilities of his Arduino – so this wasn’t entirely in ...

Quickly, he started thinking to himself, “Hmm…I wonder if I could do this with an Arduino Nano ... can be compiled directly on the Nano. He uses the example of being able to recognize ...

Their onboard LEDs are connected to pin D13, and their serial RX/TX pins are on pins D0 and D1, respectively. Additionally, the Nano and ... like the Arduino's built-in examples.