A simple firmware that can be flashed on to your Narfduino as a programming interface for your BLHeli ESC’s.
Connects to a single ESC on either pin D9 or D10, so in theory you should be able to service a single stage Brushless system without unplugging anything.
I always recommend using the latest firmware available, and having a tune appropriate for your build.
Download the appropriate firmware for the PIN you have BLHeli connected to.
This software is derived from the source code provided in the BLHeliSuite.