Home ProjectsH-DAC Addon H-MCU – Microcontroller addon for H-DAC

Addon H-MCU – Microcontroller addon for H-DAC

by nihtila
  • Provides microcontroller interface to H-DAC jumper-link pinheader
  • Can be made Arduino-compatible with external USB-serial interface board

Addon H-MCU is designed to help use H-DAC in projects where I use microcontroller for selecting input and filter settings. It makes it possible to switch input and DAC filter with external remote signals.

Design and schematics

This is just a simple microcontroller circuit connected to H-DAC jumper link pinheader. It takes voltage supplies from H-DAC as well. The circuit can be made Arduino-compatible by loading a bootloader. However, care must be taken with voltage levels as this is a 3.3 V circuit unlike many Arduino circuits. I have used this only with my own C program developed in Atmel Studio.

There are LEDs to indicate status of control lines.


Small pinheader socket on bottom side is only for mechanical support.


v1.0A PDF files

Version history

Schematics/PCB, changes for next version

  • v1.0A Initial version
    • Update silkscreen with new symbols (already done in component placement)

This page

  • 18.2.2017

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