Hi Abran, take a look at the github
https://github.com/Sensorica/PVCharacterization/tree/master/firmware.
I created a branch for you called commands. You can trim the list in the readme.txt and remove all RC (remote control) related commands and make a new file. These are the serial commands sent to the firmware Then we can remove the variables in variables.h that we don't need. I'm working on the BNO055 branch to integrate the new IMU.
I'll merge everything to the master branch once we test. Ping me if you need more info!