This Instructable is a follow-up to the nixie tube driver module (Part I) that I posted here.
The nixie driver board is designed to receive serial input from an external microcontroller (Arduino, etc.) and output decimal information and route power to one pair of nixie tubes. The pair of nixie tubes mount on top of the nixie driver board which supports two IN-12A type nixie tubes in two phenolic sockets. The high voltage requirements of at least eight pairs of IN-12A nixie tubes may be provided a high voltage power supply. The right-angle male and female header pins on the nixie driver board allow multiple pairs of nixie tubes to be joined edge-to-edge. This densely packed configuration permits minimum digit spacing while threading power and serial data connections to all elements.
Step 1: Parts List
1 - nixie driver printed circuit board
2 - K155ID1 (74141) 16-pin IC
1 - 74HC595 16-pin IC
3 - 16-pin IC socket
2 - straight 12-pin female header (1x12)
2 - right-angle 6-pin male header (1x6)
2 - right-angle 6-pin female header (1x6)
2 - 47k 1 watt resistor
1 - 100 uF electrolytic capacitor
1 - 0.1 uF metal film capacitor