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Forum Index : Microcontroller and PC projects : Battery and power up led
| Author | Message | ||||
| darthvader Regular Member  Joined: 31/01/2020 Location: FrancePosts: 87 |
Strange thing here  When i put the CR1220 backup battery in place , the power up led shows up. If the battery have to last for a long time i thing that this is not really what it have to append Does someone have explanation about this ? Cheers. Theory is when we know everything but nothing work ... Practice is when everything work but no one know why ;) |
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TassyJim Guru  Joined: 07/08/2011 Location: AustraliaPosts: 6283 |
Assuming you have a Waveshare module, it sounds like you haven't removed all the jumpers. Jim VK7JH MMedit |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
Correct: if you have left the VBAT jumper in place for any length of time this will kill the battery as you are trying to power the whole board from the poor little CR1220 |
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| darthvader Regular Member Joined: 31/01/2020 Location: FrancePosts: 87 |
My bad  I forget the jumpers  Thanks for the tip , and good that i have get a pack of some batteries. Cheers. Theory is when we know everything but nothing work ... Practice is when everything work but no one know why ;) |
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