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4IN14NixieShield

This shield is just a minimal Nixie multiplexed circuit and contains the following components:

  • 74141 nixie cathode driver IC (pins 4, 6, 7, 5);
  • TLP627 opto-couplers for anodes (pins 12, 11, 9, 8, and pin 10 for the dot);
  • 3-button resistive keyboard (A3);
  • simple boost converter driven by Arduino's PWM (pin 3, and pin A0 for output voltage feedback);
  • DS3231 module connector.

The library with some examples: https://github.com/NEONTEC75/NixieLib

4IN14 Nixie Shield