Gemma M0 battery
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Please be positive and constructive with your questions and comments.
- julasera
- Posts: 4
- Joined: Mon Jul 18, 2022 4:58 pm
Gemma M0 battery
I am having trouble getting my Gemma M0 to run off the battery. I have a couple of different lipo batteries at 3.7V (one is 1200mAH the other is 120mAH) which should work to power the gemma but it's not working. The LED goes green - orange, flashes a few times then flashes blue and green instead of cycling through the colors. I have also tried a USB battery pack with the same result. It only seems to run when plugged into my computer over USB.
- adafruit_support_carter
- Posts: 29168
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Gemma M0 battery
Were the batteries sourced from Adafruit? Unfortunately, there is variance in batteries from different suppliers. Not all of them have the same polarity, etc.
- julasera
- Posts: 4
- Joined: Mon Jul 18, 2022 4:58 pm
Re: Gemma M0 battery
Yes, they were sourced from Adafruit. The polarity looks correct, the red wire is on the terminal that shows the + on the jst connector.
- adafruit_support_carter
- Posts: 29168
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Gemma M0 battery
OK, should be good then.
What code is running on the Gemma? Is it CircuitPython or Arduino?
What code is running on the Gemma? Is it CircuitPython or Arduino?
- julasera
- Posts: 4
- Joined: Mon Jul 18, 2022 4:58 pm
Re: Gemma M0 battery
CircuitPython . It's running the default code it shipped with. I haven't made any modifications.
- adafruit_support_carter
- Posts: 29168
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Gemma M0 battery
Try removing the battery for now. Then connect the Gemma to a PC with a known good USB cable. Then double press the reset button. See if you can get the GEMMABOOT folder to show up. Like shown here:
https://learn.adafruit.com/adafruit-gem ... rt-2979187
https://learn.adafruit.com/adafruit-gem ... rt-2979187
- adafruit_support_carter
- Posts: 29168
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Gemma M0 battery
Cool. There may have just been something happening with the running code. The pattern on the NeoPixel could have been this:
https://learn.adafruit.com/welcome-to-c ... ht-2978455
If it acts up weird again, can response back here and we'll take a look. But in general, it seems like the hardware is OK. Getting in weird states like this can happen from time to time, so it's good to know how to recover. As long as you can get the GEMMABOOT folder to show up, should be recoverable.
https://learn.adafruit.com/welcome-to-c ... ht-2978455
If it acts up weird again, can response back here and we'll take a look. But in general, it seems like the hardware is OK. Getting in weird states like this can happen from time to time, so it's good to know how to recover. As long as you can get the GEMMABOOT folder to show up, should be recoverable.
Please be positive and constructive with your questions and comments.