All Questions
3 questions
0
votes
4
answers
51
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Using solar cell & charge module to power esp32 but can't charge
I have an ESP32 that I want to power with a 18650 battery, which I’d like to recharge using a solar cell. The TP4056 charging module works perfectly until I connect the ESP32. At that point, the ...
4
votes
2
answers
474
views
Voltage divider with MOSFET to save power
Is this connection right?
Its for ESP32 to measure the voltage of a 18650 battery.
- 43
0
votes
2
answers
76
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How to charge two 18650 cells in series with a 12 V solar panel for an ESP32 and NPK sensor project?
I'm a beginner and I'm trying to figure out how to charge two 18650 cells in series using a solar panel with a 12 V output. My goal is to power a circuit for an NPK sensor that operates at a voltage ...
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