CLUE not powering up with battery
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Please be positive and constructive with your questions and comments.
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
CLUE not powering up with battery
CLUE powers up fine with USB power and everything seems to work fine. It will not power up on battery. This is using the 3xAAA holder. Measured voltage on the backside of the connector on the CLUE board and the proper voltage is present. Nothings happens when reset button is pressed.
- adafruit_support_carter
- Posts: 29170
- Joined: Tue Nov 29, 2016 2:45 pm
Re: CLUE not powering up with battery
What is the program currently loaded to run on the CLUE?
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
Re: CLUE not powering up with battery
CircuitPython. It is my own code now, but the problem exhibited with the default code (non-CircuitPython) as shipped and with the default CircuitPython code.py.
- adafruit_support_carter
- Posts: 29170
- Joined: Tue Nov 29, 2016 2:45 pm
Re: CLUE not powering up with battery
For the sake of troubleshooting, lets revert to some test code. Save a copy of your .py file(s) locally just to make sure you have a backup.
Then, go into bootloader mode and drag this UF2 file over:
https://learn.adafruit.com/adafruit-clue/arduino-test
(it's say Arduino, but you don't actually need any Arduino software)
Do you get the same behavior? Runs with USB power but not battery?
Then, go into bootloader mode and drag this UF2 file over:
https://learn.adafruit.com/adafruit-clue/arduino-test
(it's say Arduino, but you don't actually need any Arduino software)
Do you get the same behavior? Runs with USB power but not battery?
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
Re: CLUE not powering up with battery
Same behavior. Runs on USB, not on battery. Are there any test points to check beyond the back of the battery connector?
- adafruit_support_carter
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- Joined: Tue Nov 29, 2016 2:45 pm
Re: CLUE not powering up with battery
Hmm. OK - even though you measured voltage, are you sure the batteries are fresh?
Is this the battery holder?
https://www.adafruit.com/product/727
Is this the battery holder?
https://www.adafruit.com/product/727
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
Re: CLUE not powering up with battery
That is the one. I have tried both fresh lithium batteries and freshly charged Eneloops. Neither works.
- adafruit_support_carter
- Posts: 29170
- Joined: Tue Nov 29, 2016 2:45 pm
Re: CLUE not powering up with battery
Weird. The battery case switch is on? Seems like it must have been to get the voltage measurement.
Can you post a photo of the back of the CLUE so we can look for anything obvious with the hardware.
Can you post a photo of the back of the CLUE so we can look for anything obvious with the hardware.
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
Re: CLUE not powering up with battery
In case it helps, there's -0.069V on the 3V pad (measured against the GND pad) when battery power is connected. It's 3.322V when USB powered.
- adafruit_support_carter
- Posts: 29170
- Joined: Tue Nov 29, 2016 2:45 pm
Re: CLUE not powering up with battery
Thanks for the excellent photos. Really weird issue. Not sure what it could be, but something just seems off. Let's just replace it.
Send an email to [email protected] with a link to this thread and your order number and they can send you a replacement CLUE.
Send an email to [email protected] with a link to this thread and your order number and they can send you a replacement CLUE.
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
Re: CLUE not powering up with battery
Will do.
Thank you
Thank you
- l8throp
- Posts: 10
- Joined: Wed Feb 20, 2013 4:54 pm
Re: CLUE not powering up with battery
@mvn
Might be a silly question, but is it possible that you have the batteries in backwards?
On my Clue, the negative is on the left (with Clue positioned as in your probe picture).
Provided that your red probe is connected to the positive input on your meter, shouldn't it be reading a negative value given how you are touching the terminals? It looks like it's showing +5V in the image.
Just a thought.
Might be a silly question, but is it possible that you have the batteries in backwards?
On my Clue, the negative is on the left (with Clue positioned as in your probe picture).
Provided that your red probe is connected to the positive input on your meter, shouldn't it be reading a negative value given how you are touching the terminals? It looks like it's showing +5V in the image.
Just a thought.
- mvn
- Posts: 11
- Joined: Mon Sep 01, 2014 11:53 am
Re: CLUE not powering up with battery
The batteries are in properly, but comparing the battery holder I have with the photo on Adafruit's web site makes it looks like maybe the JST connector on the holder is fitted backwards. The batteries will not make contact if put in backwards, so I'll try to shim it in the morning and try reversing them.
- adafruit_support_carter
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- Joined: Tue Nov 29, 2016 2:45 pm
Re: CLUE not powering up with battery
Hey! Good eye. Taking another look at the photo of the meter reading, the polarity appears to be reversed for your leads.Might be a silly question, but is it possible that you have the batteries in backwards?
The test lead hides the actual battery connector though. Can you post a photo of your battery holder - including the JST connector.
Please be positive and constructive with your questions and comments.