Modified DS3231 ChronotDot

Version 1.0 of the ChronoDot has a critical flaw. It does not fit on a standard breadboard. Because of it’s round shape, one can’t use pins outboard of the PCB. To fix this shortcoming, I decided to shave it down to size. A few passes on my disc sander and, I can now just get 1 row of pins on each side. See the photo below.

Modified ChronoDot DS3231

Modified ChronoDot

However, after doing this the ChronoDot stopped working. Apparently in the process of shaving the PCB edges, I cut a trace. Sure enough, after a couple of checks with my trusty Radio Shack Digital Multimeter (Model 22-820), I discovered I had cut the trace going to a ground plane which fed the ground pin of the DS3231. If you look closely at the photo you can see my “greenwire fix“. My wire is actually “white”.

Radio Shack 22-820 Digital Multimeter

Radio Shack 22-820 Digital Multimeter

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About Jim Eli

µC experimenter
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