Uploaded May 2026 | Updated September 2026, 1 week ago

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In this video, I document a fun little digital clock kit, sold on Amazon via their "GODIYMODULES" store. I assemble and test the kit, comment on its features, and demonstrate how to set it. I also provide information about four hacks I made to my kit:
- Better discrete LEDs for the colons
- Adding a trim capacitor to allow precise calibration of the clock
- Making a simple display case for the clock

Timeline Table of Contents:
00:00 Introduction & Amazon product listing
03:45 Kit overview
05:32 Hack #1 - replace kit's discrete LEDs with better ones
06:18 PCB assembly
13:46 Initial tests
16:33 Adapting old USB power supply for use with clock
18:41 Clock/oscillator frequency accuracy
19:29 Hack #2 - red filter for LED display
20:00 Beauty shot
20:25 Setting the clock
22:25 Purpose of the electrolytic capacitor
23:29 Hack #3 - Adding a trim capacitor for more accuracy
29:52 Schematic diagram & circuit theory
1:15:38 Hack #4 - making a simple & cheap dust cover/display case