Questions tagged [charging]

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Why such large error on opAmp in my setup? [migrated]

I'm working on a device that would restore voltage on my collection of used 18650 cells. The theory is that they need to be charged extremely slowly with constant current of max 100mA until they are ...
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Battery charger board with status interface

There are of course a lot of different battery charging boards, which can be used with the Arduino, most being TP4056 based. There are also a few battery charged boards with an on-board display ...
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1answer
103 views

Can a Lithium Polymer battery charging circuit on Arduino boards also charge Lithium Lion batteries? [closed]

I have a project that the form factor of 18650 batteries works well for. The board I'm using is a esp32 based board with built in battery charging: https://www.amazon.com/gp/product/B072HBW53G/ref=...
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2answers
121 views

Smart way to map digital pins to a for loop over analogue pins

First post here and I have very little Arduino/c programming knowledge so forgive me my ignorance. I am processing 18650 cells for a little powerwall project. I am using an Arduino pro mini ...
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3answers
5k views

Can you charge and use a LiPo battery at the same time?

I have a system that uses an Arduino Uno board as a "brain". All the elements in the system are powered by a single LiPo battery (3cell, 11.1V, 1800mAh). I made a circuit so the arduino can check the ...
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1answer
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How to use to two different programs into one stkech

I am currently using relay module, but I am facing a problem that, when Arduino pins are LOW then all relay are going HIGH, so I want to use this code so that when arduino starts all pins are getting ...
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1answer
45 views

What boards have integrated USB charging?

I've been building wearables, using the adafruit trinket, which I love, its small size is easy to tuck away. But I hate having to unplug the battery to charge it every time. I wired in a SPDT switch, ...
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Charging Blend Micro via USB

I want to use a RedBearLab Micro Blend micro-controller with an lipo battery and charge it with the built-in USB connector of the micro-controller. My question is how can I realize it when the ...