Will the LiPo power an Uno when power is lost?

awsnap
Newbie

Posts: 2

Will the LiPo power an Uno when power is lost? Dec 26, 2022 23:49:12 GMT

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Post by awsnap on Dec 26, 2022 23:49:12 GMT

I'm building a device to do some remote monitoring of power and temperature. I'm planning on using this with an Uno and powering the Uno with a 9V, 1500mA power supply. I have a 20000mAh LiPo to use with the shield. So here are my questions...

The Uno is 5V and so I shouldn't need to cut the logic trace. Correct?

If power is lost to the Uno, will the LiPo power the Uno until power is restored/in runs out? I want to send at minimum a 'Power lost' message.

Thanks

sammyj2 Newbie Posts: 3	Will the LiPo power an Uno when power is lost? Jan 8, 2023 19:39:35 GMT via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by sammyj2 on Jan 8, 2023 19:39:35 GMT It will not, I ha e been trying to figure out how to run them both off one battery... should not be too hard but maybe someone will chime in on how to do this?

Botletics
Administrator

Posts: 112

Will the LiPo power an Uno when power is lost? Jan 9, 2023 1:23:11 GMT

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Post by Botletics on Jan 9, 2023 1:23:11 GMT

You could cut the trace on the SIM7000 shield as described as described here, then use a 5V booster board like this one. You would then have to connect the LiPo battery connections on the booster board to VBAT and GND on the SIM7000 shield, as well as connect the 5V USB from the booster to the Arduino. With this method, it'd be best to use a higher-capacity LiPo battery to make sure it can handle both the Arduino and the SIM7000.

Last Edit: Jan 9, 2023 1:25:49 GMT by Botletics

Will the LiPo power an Uno when power is lost?

Post by awsnap on Dec 26, 2022 23:49:12 GMT

Post by sammyj2 on Jan 8, 2023 19:39:35 GMT

Post by Botletics on Jan 9, 2023 1:23:11 GMT