Hi everyone! I am not sure if I chose the right section of the forum for my question so forgive me if not.
My question is simple I have xiao esp32c3 and a lithium ion battery 3.7v 2500mah (hopefully I won't fry µC with this battery) for powering it up. I read on official xiao esp32c3 how to solder the connections on the back on the board. My problem is that the battery came with three wires (black, red and yellow). From internet I found out that the yellow one might be the thermistor to monitor battery's temps. The question is how to correctly hook up the yellow one (any specific GPIO?).
P.S. I read that xiao esp32c3 does not like voltages over 3.3v, will I fry it with this battery?
Any help or advices are appreciated!
No controller likes voltages higher then Vcc.
Read the controller spec.! Vcc is defined within a minimum and maximum level. Exact 3 30000000 volt doesn't exist in real ,ife.
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Probably.
You will need an analogue input.
There should be a part number printed on the battery; use that in your favourite internet search engine to find a specification for the battery - that should include details of the thermistor.
Also in your favourite internet search engine, search for "Thermistor Arduino" for how to use a thermistor (any thermistor) with an Arduino.
Possibly.
Don't risk it - keep to the specified supply voltage for the ESP32!
1 Like
Use the AP2112 3.3 regulator. Provides up to 600mA.
Ref: "https://cdn-shop.adafruit.com/product-files/2471/AP2112.pdf
No you will not but you should check and make sure that the black wire is negative and the red is posiive.
Do you have a DMM or voltmeter to check?
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