I bought a GOOUUU ESP32 S3 CAM from aliexpress because of the built-in cam and sd functions, to power it i was going to use a 18650 through the VIN pin but it appears to no be any, so i want to ask if i can make a DIY VIN pin or something.
Here is the schematic and pinout
What power pins does the board have ?
Possible 5V and/or 3.3V
x2 3.3v and 1x 5v all output
Isn't the 5v pin the VIN?
The Vin pin on Arduino boards such as the Uno/Nano requires at least 7V in order for the board to work as the voltage is reduced to the working voltage of the board (5V) by a voltage regulator
On the Uno it is possible to power the board by providing 5V to its 5V pin but this can cause problems with some boards if both that supply and the USB supply are plugged in at the same time
It sounds as though you could use the 5V pin on the ESP32 board to power it but I cannot guarantee it. Whatever you do, you must not feed more than 5V into the 5V pin
already tried feeding it with 5v through the 5v pin and it didn't react
nope, already tried feeding it from that pin nad it didn't turn on
Maybe the AMS1117 3.3V regulator, normally used on an ESP32CAM, is faulty.
If you feed the Vin\5V pin with 5V what is the output voltage from the 3.3V regulator ?
Does it work on USB ?
And where exactly did you have the GND pin, of the 5V supply connected ?
Draw us a diagram of the connections maybe.
An 18650 lithium ion battery is 4.2V fully charged and floats down as depleted: not near enough voltage for Vin.
I don't get why we're seeing so many posts lately of people trying to simply connect a battery to a board to power a project. You need a buck-boost converter to convert battery voltage to a stable 5V (or better yet 7-9V for Vin to utilize the on board protection).
i'm using a step up converter to have the 5v
What are the answers to the questions in posts #8 and #10 ?
It says 0v
I connected the positive from the boost converter to 5v pin and the negative to the GND pin in the other side of the board
One of the so called GND pins on more recent ESP32CAMs is actually connected to the EN\Reset pin, which is why I asked;
"And where exactly did you have the GND pin, of the 5V supply connected ?
Draw us a diagram of the connections maybe"
Perhaps try one of the other GND pins for the connection.
Does it work when connected via USB?
Can you upload sketches?
i can upload sketches from the two ports and receive serial data
Did you push reset after you connected the 5V step-up?
Do you have any if or while Serial in your code.
i did and the led wasn't blinking
