I didn't wait more that 48 hours after receiving my Bangle.js to upgrade it with a piezo buzzer.
This come from a smoke detector that I found landing on the ground in the street near my work a certain time ago. I dismantled it to keep for future projects some components (even some SMD capacitors...) and a piezo buzzer.
Just soldered two thin wires on it, tested it with an Arduino UNO.
And, finally, put in my Bangle.js.
Biggest thanks to Gordon that showed how to disassemble/re-assemble
the Bangle.js and the way to add a piezo buzzer.
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