The Lobster Claw Bench Se 02 - Ep 05 - I start the universal Nixie tachometer Project.

I've been meaning to get to this one for awhile.

An old school digital tachometer build utilizing a frequency to voltage converter driving an analog to digital converter.

In this first installment the Nixie part is a mere tease .. let's just get the A/D converter section working with LEDs first, then (in order) I'll move on to the F/V converter, input signals and how to detect them from various engine configurations, replacing the LEDs with glowy neon goodness, and finally perhaps adding a Russian IN-9 neon bargraph tube for some extra orange bling.
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