ESP32 Open Source Smart Watch
6 months ago | Blogs | by: ELECTRONOOBS

On this website we’ve seen a few open source smart watches over the last few years, even myself has one project about that. Well, Paul_3D_Things has been working on a smartwatch project for some time. I've been following him for more than a Year on Instagram and I could see a few versions for the PCBs from bulky and simple to small, compat and with GPS on board. Well, he has made some new PCBs and the project is based on a monochromatic OLED display. I have to say, it looks awesome, but what else this new project will have?

Full documentation: LINK

Ok, so as an open source project you are free to download the PCB design files and get the board produced on your own, but pauls_3d_things has actually partnered with LILYGO to do a run of the Open-SmartWatch electronics which you can buy one on AliExpress right now for just $24 USD if it's still on stock. A side of that you’ll still need to order the battery separately and 3D print your own case, but that still seems like a pretty a nice deal and easy to make.

On the picture below we can see all the versions and how this project evolved. I really like the monochromatic OLED. The interface is very cool, it has nice features such as Bluetooth, WiFi, GPS, barometer for pressure measurements, accelerometer and pedometer and more. 


  • ESP32-pico-D4: 2x240MHz, 320KB RAM
  • Bluetooth 4.2 BR/EDR BLE
  • WiFi 2.4GHz 802.11 b/g/n
  • GC9A01 240x240 16bit TFT display (round)
  • BMA400 Accelerometer + Pedometer
  • MCP73831 LiPo Charger
  • CH340E USB Serial
  • Quectel L96 GPS module
  • 4MB RAM
  • microSD

What I like most of this new update is that he removed the basic push buttons and instead, he designed a PCB with some copper pads for the buttons. I guess these are capacitance based so it would act as touch pads for 4 buttons. That PCB is round and fits perfectly on the 3D printe case and it also adds the hour lines so it looks awesome. Detecting changes in capaacitance is a common method to detect fingers and with that, the push of a button. The case is also nicely design and compact. Can't wait to see more posts on this project. Make sure you check his Instagram and the full project website mentioned above. You have the schematic, the part list and the full guide, so go on!

6 months ago | Blogs | by: ELECTRONOOBS

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