Pandemic Clock

What day is it anyway? Seems like that is the running joke working from home these days. With a fair amount of idle time on my hands I thought I’d make a little clock to help out. One of the construction goals was to use parts on hand, as going out to stores wasn’t really in the cards.

Clock face is some pretty basic plywood i had on hand, with the days pocketed in with the CNC machine. I did use a 1/8″ downcut bit to not chip-out the super thin layer of good wood on the top. Next time I do something like this I’d cut through tape as it would make the next epoxy-filling step a lot easier.

The text is a 2-part 30 minute epoxy with some coloring mixed in. My son has gotten pretty good at mixing/pouring. Did our best to clean up any spillage with mineral spirits while it was still wet, and later sanded what was left with a 320grit paper. The movement is just a small hobby servo, but it only rotates about 160 degrees. I 3d printed out two gears to create a 2:1 ratio so the servo could swing pretty much the full 360 degrees to move the hands. For gear generation I used gearDXF.

The controller is a NodeMCU, which is an esp8266 dev board. These are programmed with the Arduino IDE, and controlling a servo is easy with the built in library.

Code is on github if you are interested. Here is a link to the fusion model.