A Collection of Eagle schematics and board layouts for driving Nixie and VFD display tubes.
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README.md

This repository holds a Collection of Eagle schematics and board layouts for driving Nixie and VFD display tubes. These schematics are not yet verified. The IN-12 Arduino and Raspberry Shields are tested ok. The remaining modules are still in development.

IN-12-Raspberry Pi Zero W Shield

This is a 6 tube shield that connects to the GPIO header of a Raspberry Pi Zero W.

IN12 RaspberryShield1

IN12 RaspberryShield2

IN12 RaspberryShield3

A video of the shield running the clock.c driver can be found here: https://youtu.be/0auW9YwZaXU

IN-12-Arduino Shield

IN12Shield1

IN12Shield2

A video of the shield running the code sample can be found here: https://youtu.be/qcBPYD-F15M

The shield has 4 IN-12 Nixie tubes. The shield requires external 170V power. 5V is obtained via the shield connector. Pin mapping is as follows

Parts list:

  • 4 x IN-12 tubes.
  • 4 x K155ID1.
  • 2 x 74HC595.
  • 4 x anode resistors. The value of these should be calculated according to tube rating and drive voltage.
  • 5 x pushbutton switches (optional).

Arduino pin mapping

  • D0: SER
  • D1: RCLK
  • D2: SER
  • D8-D12: optional switches.

IN-2 Nixie-Modules

Each Module has two Nixie tubes, a shift register and a nixie driver. The modules require external 5V/170V power. The on-board shift registeres allows the modules to be daisy chained.

Parts list:

  • 2 x IN-2 tubes.
  • 2 x K155ID1.
  • 1 x 74HC595.
  • 2 x anode resistors. The value of these should be calculated according to tube rating and drive voltage.

IN2Modules

IN2Modules_individual

IN2Modules_assembled

TimeExpander Eagle Library

The librar contains Eagle symbol, package and device definitions for K155ID1 (pin compatible with the obsolete 74141) along with the following display tubes:

  • IN-1 - not verified
  • IN-2 - verified
  • IN-12 - verified
  • IV-12 - not verified
  • IV-22 - not verified

IN-1-Modules

TBD

VFD-Modules

TBD

License

Hans Jørgen Grimstad www.TimeExpander.com