Software and hardware to fix volume problem on audi concert1/chorus1 units made by blaupunkt.
know issues are here
Schematics in pdf.
Pictures of finished product:
Bottom side, with PLCC52 socket, inside part of pastic need to be cut:
Upper side, with comments to sockets
How to wire it (currently without intefacing with front pannel)
Everything is under GPLv3
Contributions are welcome
PCBs are on sale also as whole product, kitt (PCB, soldered crystals, unsoldered preprogramed IC, pasives,PLCC52 socket)