I am building a modular audio system. I want to use it mostly as a guitar effect pedal with an integrated power amp, but since the thing is going to be modular, I plan to add bluetooth audio in the future as well.
Currently I have 5 modules:
- guitar pre-amp with treble/mid/bass tone control
- DSP audio processing chip FV-1 with an EEPROM (24LC32) for external programs
- class D power amp; currently TPA3136D2 (2x10W)
- mixer board which mixes the output of the DSP chip and the output of the guitar pre-amp
- system power with an ATMega32 controller for switching DSP programs and displaying selected program
Each module is on a 10x5cm PCB with a bus connecting them all together. They are stacked one on top of another and connected with spacers. The completed system will almost look like a beehive where the wax frames are the individual PCBs. I wanted to call it The Beekeeper, but that name is already taken

, so I will have to come up with another beehive themed name. Any ideas?
Except for the chips (power amp, DSP and op-amps) I want to make the PCBs as through-hole as possible. I have space, and I want to make it as easy to assemble as possible, so there is no need to go SMD. The power amp has a large cooling pad which sits on the bottom of the chip, and I have worked out a way to solder it to the board and have the PCB act as a cooler. More on that later.
This is my current progress
https://raw.githubusercontent.com/nodep/myAmp/master/docs/the_beekeper.pngThe project can be found here:
https://github.com/nodep/myAmpThanks for reading!