A simple Blink (Hello World of microcontrollers) project that also outputs blink status on serial port.

First open pi config. sudo raspi-config Under interfaces click serial, dont enable first option, do enable second option at next screeh.

Find your serial port on your computer (not the pi) ls -l /dev

This will begin listing on the serial port. cat /dev/cu.usbserial-1440

Back on the pi echo “Hello” > /dev/ttyS0

Or over ssh ssh pi@pi "echo Hello World! > /dev/ttyS0"

You should now see

...
Blink High
Blink Low
Blink High
Blink Low
Blink High
...

If you have your ssh key setup on the pi with the default pi user just run. This will build the binary, copy it using ssh and the executing it. The output will automatically piped over ssh and closing the ssh will automatically kill the process on the pi.

Ensure you have docker and docker-compose available.

sh deploy.sh