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MiniDexed Hat for Raspberry Pi

Board mounted on Raspberry Pi 4

This aims to make the construction of a MiniDexed a little easier.

Features:

  • On-board step-down converter to run from a typical 12V wall-wart power supply to sidestep the exacting USB-C requirements of the Raspberry Pi 4
  • Direct mounting for a PCM5102A audio module, with output routed to headers
  • Headers for connecting peripherals:

Revision 1 does not include debouncing capacitors for the encoder. I intend to make my own encoder boards with better debouncing.

The PCB dimensions are based on Seth Hillbrand's template for a Raspberry Pi hat.

With an appropriate display, this board should also work with mt32-pi, but I have not tested it.

Warning

Set the voltage on the converter before soldering the audio interface in place or installing the hat on the Pi. I recommend around 5.2V.

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Raspberry Pi Hat to make a MiniDexed synthesiser

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