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