I have written a simple test code in python to toggle two of the I/O pins on and off every few seconds. I would like to be able to run this code whenever the board powers on so that I don't need to bring a keyboard, mouse, and monitor everywhere I want to run the simple test. How do I do this on Mendel OS on a google coral?
Using crontab has been working consistently for me, you may want to add a time.sleep in the beginning of your python file
edit crontab 
crontab -e
select nano editor
add
@reboot sudo python3 <path_to_your_script>
How do I run a python script on boot on Google Coral?