Great project idea, however, I'd simply make use of a cheap Arduino (ebay) and the GPS module from Adafruit for $40. Then drive BCD out of the Arduino pins to your Nixie tubes. You'll only need 4 pins per tube for the BCD control.
NASA's Orion Flight Software Production Systems Manager Darrel G. Raines joins Planet Analog Editor Steve Taranovich and Embedded.com Editor Max Maxfield to talk about embedded flight software used in Orion Spacecraft, part of NASA's Mars mission. Live radio show and live chat. Get your questions ready.
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