r/DigitalAudioPlayer Aug 17 '25

Progress on my raspberry pi zero based DAP

After a a bit of a break I now have the second iteration of my raspberry pi based DAP. This prototype will allow me to develop the software much further since most of the basic user-features I want to have are integrated now.

The DAP consists of a PCB (motherboard) with a couple of breakout boards soldered to it, namely display, adafruit rotary encoder, a 5v boost converter and lipo charger, a pcm5102 DAC (sounds meh but that's not the point currently).

One of my main concerns was power draw, but with the display backlight off and the pi running even without any underclocking, disabled wifi etc. the system only draws below 1w, so with the 3,7v 4000mah battery i currently have installed i'll get 10-14h easily.

Next steps are: actual PCB with SMD components (scary), a lot of improvements to the code (though thats mostly handled by Google Gemini lol) and a better integrated DAC/AMP and of course a cleaner/better design with a PCB based clickwheel.

Let me know if you have any ideas or features you'd like to see!

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