Knob and Power

A project log for Nixie and Numitron Clock

Combining the retro awesomeness of Nixie tubes and Numitrons to make one cool clock.

Charles AhrensCharles Ahrens 09/27/2015 at 03:430 Comments

I decided on using a rotary encoder with a pushbutton integrated into it as the only source of control for the clock, to switch between the different modes (12 hour, 24 hour, date, temperature, day of the week, setting time, etc.) and I needed to machine a knob to fit the encoder since it didn't come with one. I used the machine shop on campus to lathe a small ~15 mm knob out of brass, with a brass plate that would hold the knob and power plug to the side of the case.