Where is the Arduino sketch file for the board's firmware?

#1

I want to customize the AirGradient’s firmware. Initially I just want to invert the screen as described in this post.

I’ve found the AirGradient Arduino library on GitHub and have installed it in my ArduinoIDE environment. However, I’m not sure how to use this library (it doesn’t have any documentation).

I think I need to write an Arduino sketch that uses the AirGradient Arduino library. Is there an existing sketch I can work from?

#2

You can find the sketch files by opening the Arduino IDE and selecting File > Examples > (Examples From Custom Libraries section) > AirGradient Air Quality Sensor.