How I Built the Watch From the Future

Published at : 23 Dec 2025

Have you gone down here to try find an excuse for why the video I made isn't that good? Well here you go, this is the first video on this channel, and one of the first I've ever edited. So there you go, not such an interesting excuse.

Oh wait did you actually like the video? Well thanks!

Somewhere here you would normally get the links to Patreon or some sponsor links or whatever else people do for money on this platform nowadays...

Instead let me tell you where you could find me and some of the parts I used on this project!

Find my Instagram here: https://www.instagram.com/sahko123

The main parts I used for the watch are as follows,
- The display, which is the HCMS2901 (A more 3.3V friendly HCMS3901 exists now and is easier to find new). I got my displays on eBay.
- The microcontroller, the stm32u08, offers a real time clock and USB programming.
- A vape battery.
- STC4054 LIPO charger IC.
- Generic 3.3v LDO regulator.
- and several capacitors.
I got most of my parts from Digikey but many places sell most of the parts I bought.

Did you spot the hint for one of the next watch projects ( ͡° ͜ʖ ͡°)

Here's the schematic and code repos
Schematics/PCB : https://github.com/sahko123/orange_loop_schematics/tree/master
Code : https://github.com/sahko123/orange-loop-rename