(The one on the left is the phob)
PhobGCC is an opensource PCB made to give Gamecube controllers a more consistent experience and a longer life. Excluding shipping and practice, it took me three days as my very first soldering experience. It was fun!
Link for documentation here https://github.com/PhobGCC/PhobGCC-doc
PhobGCC devs didnt mention it in their docs so I didn’t try that one.