Battery powered project
Hi Everyone! So I'm making this portable projects with consists of ESP32s and brushed DC motors. I want this project to be battrey powered via a 3.7v Li-ion battery. But the issue is for the circuit, I need a stable 5v supply. I tried using a DC-DC boost converter clocked at 5.3v, but the ESP32 doesn't seem to happy with that voltage. So I finally concluded that I'll use a 3.7v and 1.5v cell in series to get 5.2v. Can anyone help me in whether this will work or not
16 Replies
Do NOT do this ever.
Get a battery manager that will do all of this for you. Moment.
Something like this.
https://www.dfrobot.com/product-2578.html
2-Way 18650 Battery Holder
This easy-to-use 16850 battery holder with dual-slot offers micro and type-C charging inputs, five 5V/2A output ports, five 3.3V/1A output ports and one 5V USB output.
you dont seem to get my point. I have 1 18650 battery and i have to get 5v out of it. How?
and I also need fairly common and reliable components, as I do not buy stuff from online beacuse they are too expensive compared to the prices provided by local shops
Then there is not a lot you can do in that case.
@Reeshav_Ghosh200
In short. Nothing.
😰
I mean you painted your self in the corner.
You have a single. Battery. And 0 options.
You have a boost converter that is operating out/borderline specks.
And again you gave your self.
no options.
Can't get mor batterys.
Cand get more hardware.
Can't change anything.
@Reeshav_Ghosh200
You can mark this thread as salved and close it please.
what about more hardware @Maderdash
Then get what I linked.
You are often better suited to seeing what a problem requires to be solved than trying to force hardware into a box it was not meant to be in.
Just because you can parallel park your car with a forklift, does not mean that you should
what particular ESP board do u use?
most ESP32 modules typically runs at 3.3V. there might be problem in connection between motor and ESP
didn't you split battery source of motor and ESP?
battery for the motor, step down to the esp
w/motor driver of course
my plan was do it w/VIN pin in ESP32 to reduce the number of voltage regulators and energy efficiency
i also have a servo motor that needs 5v anyhow
Assuming you send 5v to the esp32 and 5v to the motor controller, and the motor controller won't dump spikes back on the 5v rail, then you'll be in good shape.
*with a proper 5v battery
@Reeshav_Ghosh200 can you adjust the boost converter output voltage? Most of the ones you can buy online have a dial for changing the output voltage
i very well can, but the output voltage dosent seem to change even w/brand new MT3608
Please try without a boost converter