ESP32 accu mode

[wulf@goldmail.de]

Hello,

I‘m searching for an ESP32 within step up converter and charching adapter. I want to use an 3,7V accu and the output-voltage has to be 5V.
I‘ve allteady realized it with an single charching adapter and a mini step up converter, but unfortunately this take to much area/space in my project. I know that‘s possible to get some hardware with both things in one but before I will use this I try to find a smarter solution.
Can somebody explain me wich ESP32 I have to use in wich way to go on with my project? If you have another idea for charching accu with usb-c and using an ESP32 for wled with about 40 leds (5V) in a way wich is as small as possible - please share you knowledge.

Thanks!

Wulf

[MicroController]

It sounds like you're looking for a way to make the ESP32 act as the charge controller for the Lithium battery. Did I understand that right?

[wulf@goldmail.de]

Yes, that‘s right. I hope I can use it as charge controller for a lithium accu, as a step up converter and a wled controller. I know maybe it will not work for all but I need to minimize the hardware.
I build it with single parts - it works fine but it‘s not possible to put them all in my project. It‘s also not possible to get more space.
Wled is no problem. Have you ever used an ESP32 for control charching or for step up from 3,7V to 5V?

Thanks by the way!

Wulf

[MicroController]

Using only the ESP for stepping up is probably not very useful. After all, the ESP first needs 3.3V itself before it can do anything. If you have a buck-boost converter to generate stable 3.3V for the ESP from the 2.x-4.2V of the battery it's a different matter and you could use the ADC and PWM to generate 5V for the LEDs.
There are small buck-boost modules available suitable for 1S input, like this one (1.8-5.5V -> 5V or 3.3V).