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trouble powering Trinket M0 from battery
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trouble powering Trinket M0 from battery

by bblack7489 on Fri Oct 15, 2021 2:59 pm

I'm trying to power my Trinket M0 directly from a single lipo cell.

I'm reading 4.14 V from the cell, and am getting that on the Gnd and Batt pens on the trinket itself; however it doesn't appear to be powering up. Is there something else to enable, or did I get a Trinket with a bad on-board regulator?

bblack7489
 
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Re: trouble powering Trinket M0 from battery

by dastels on Fri Oct 15, 2021 3:56 pm

Can you post a clear photo of the Trinket with battery attached.

Dave

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Re: trouble powering Trinket M0 from battery

by bblack7489 on Fri Oct 15, 2021 4:27 pm

Well, I found and sort of fixed the problem.

There wasn't continuity between the Batt pin and the Vin pin on the voltage regulator. There must be a broken trace or cold solder somewhere. I used magnet wire and wired around it. It works but just looks a little rough

For completion, this is the circuit.

https://cdn-learn.adafruit.com/assets/assets/000/041/583/large1024/leds_circuit-diagram.jpg?1494339824

bblack7489
 
Posts: 2
Joined: Thu Mar 22, 2018 11:57 pm

Please be positive and constructive with your questions and comments.