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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@BootySnorkeler
Hello y'all,
I recently made a project, it's a watch powered by the MDBT42Q and a CR2032 coin cell, whch is 220 mah.
full details here: https://iamericmin.github.io/tm5.html
It's an updated version of a previous watch that also used an MDBT42Q and a smaller CR1225 cell, which is only 50 mah. The old watch lasted about two weeks, but mine can't go more than two days!
The only culprit I can think of is the external crystal. I added a 32khz crystal with 22pf caps to the new watch, maybe that's why? The previous watch just tracked time with its internal crystal.
Also, the Espruino website says that MDBT42Q modules go to deep sleep automatically when proper conditions are met. So I'm really baffled here :'(
Any help would be greatly appreciated. Thanks!