Witty Pi 4 L3V7 - LIPO Charging status

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Last Post by andrew.simpson17 4 weeks ago

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andrew.simpson17

(@andrew-simpson17)

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I know during the charging the battery is disconnected from Vin and the voltage on Vin is actually the voltage from USB-C connector.

i also can see in the menu options when I call wittyPi.sh that the LIPO has a status if charging. How does it know this? I looked in yoru Python source files and cannot see how it works out whether it is charging or not?

Thanks

Posted : 03/08/2025 9:23 pm

uugear

(@admin)

Posts: 644

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Raspberry Pi's GPIO-5 is used to detect the charging status, while GPIO-6 is used to detect standby status. They are connected to the TP4056 chip.

This is how wittyPi.sh uses them:

https://github.com/uugear/Witty-Pi-4/blob/main/Software/wittypi/wittyPi.sh#L585-L586

Posted : 05/08/2025 7:47 am

andrew.simpson17

(@andrew-simpson17)

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Thank you!

Posted : 05/08/2025 8:32 am