Hi everyone.
I am trying to use a Li-Po battery to power an ESP32-C6 and a 12V DC device, using a MT3608 DC-DC Booster.
I also need something to stabilize the MT3608 12v output because the device is very 'picky'.
My electronics knowledge is almost zero, as you can figure out.
I have the ESP32 programming all covered up, but these electronic small parts are way out of my league.
Can you please advise me on the best Mosfet to use and other transistors/capacitors you may think necessary?
Thanks.
Regards,
PaulRB
April 15, 2026, 6:23pm
2
Look for a boost module with an output enable input. That will allow the ESP to control the power without a MOSFET.
xfpd
April 15, 2026, 6:27pm
3
When you boost a voltage, the current available is inversely proportional. (P = I*E). Get a 12vdc power supply and down/buck converter.
Maybe the mystery 12v device has a 3v3 or 5v cousin. Is it a vape?
Thanks. I've heard of those, but didn't find any. Can you point me to one?
The mistery device is a lin bus steering wheel. It needs to be wireless, so I'm afraid I can't go the 12vdc power supply route.
MikeMelga:
Can you point me to one?
Pololu has a large selection , check for "enable" on the board and "true shutdown" on the description.
1 Like
I don't know exactly
This will be my first test.
It will also depend if I turn the steering wheel leds on or not.
If you don't have a multimeter, now is the time to buy one. To succeed in this hobby, they are absolutely invaluable.
xfpd
April 16, 2026, 12:05am
11
MikeMelga:
lin bus steering wheel
Would you post a link to the exact model to read/show the specifications?
I have a multimeter, but did not know it could measure power consumption. Live and learn.
It's a Volvo V40 steering wheel.
Volvo has the diagrams online (https://volvodiag.com/ewd-online-eng/ ) but I guess steering wheel power consumption is not something they advertise or care.
