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I am kind of new with electronics circuits, and therefore I have some doubts about this diagram of a ESP32-CAM.

I want to use 5V supply instead of 3.3V. Do I need to add some resistors or capacitors to do so?

If the on-off switch is for turning on/off the device? what is the push switch. It's a button that when GPIO13 receives changes on his signal activate a code (I mean, does it act like a button code activator) If it's not how can I put a button so the ESP32-CAM start /stop filming?

enter image description here

I got the image from this source http://technoreview85.blogspot.com/2019/08/ESP32spycam.html

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  • you cannot apply 5 V to a 3.3 V pin Commented Mar 8, 2024 at 22:03
  • @jsotola it does have a 5v pin. But I didn't know if I do so I needed to add some more components Commented Mar 9, 2024 at 1:25

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Reset to default
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The ESP32-CAM can be powered via the 3.3V or 5V pins. It is safe to apply 5V to the ESP32 Vcc pin. Just make sure that no other ESP32 pin is exposed to a voltage over 3.3V.

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enter image description here

This is the typical connection bwetween the ESP32-CAM and the FTDI module if you want to connect the ESP32-CAM to the laptop. If VCC is 5V,the VCC pin of the FTDI must be connected to the 5V pin of the ESP32 CAM. (source: https://www.theengineeringprojects.com/2025/03/how-to-program-the-esp32-cam.html )

I don't know from which project tutorial you got your diagram. What I can understand is that the purpose of the push switch is different from the ON-OFF switch. May be it is for making a counter, LED switching or something like that.

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