This is the source code for the USB Tester OLED Backpack
Which can be found at: https://www.tindie.com/shops/FriedCircuits/
Download Zip for complete working package
How to update firmware:
http://friedcircuits.us/docs/oled-backpack-how-to-update-firmware/
This also works with a desktop java appilication for graphing and data logging in real time.
https://github.com/FriedCircuits/FC-USB-Tester-Data-Logger-App
License: All source code and designs are released under
Creative Commons NonCommercial-ShareAlike
CC BY-NC-SA
Please contact me for commercial opportunities.