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This is a through hole PCB version of the HAGIWO Display Eurorack module
The design was published on Github by mzuelch and we put together the design & kits in our lab.

The module is a Arduino-based simple Arduino-based OLED DIsplay that has a 4 modes as of now. The microcontroller can be reprogrammed easily with the Arduino IDE and a USB cable.

  • Rotary Encoder with Push button for mode selection and parameter settings
  • GAIN attenuator for input signal
  • CV/AU toggle switch for CV and Audio Signals
  • TRIG IN (trigger for 1 Shot Mode)
  • INPUT (protected against over voltage and negative CV at 5Vp-p)
  • OUTPUT (passive output of input signal)
  • LFO / EG mode
  • 1 Shot Mode
  • Spectrum Analyzer Mode


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