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.
A video of the shield running the clock.c driver can be found here: https://youtu.be/0auW9YwZaXU
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
- 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.
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.
- 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.
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
Hans Jørgen Grimstad www.TimeExpander.com