Can I power an ESP32 using 5V except USB ?
Posted: Wed Aug 04, 2021 1:04 pm
by GeorgeFlorian1
What are the 5V and VIN pins used for on a DevKitV4 with ESP32 Wrover-B ?
Can I power the ESP using one of those pins ?
If not, then I am supposed to get a 3V3 power supply and use the 3V3 pin ?
Re: Can I power an ESP32 using 5V except USB ?
Posted: Fri Aug 06, 2021 5:53 am
by samuxip
To power your ESP32 dev kit, you have three options:
1. Via the USB port.
2. Using unregulated voltage between 5V and 12V, connected to the 5V and GND pins. This voltage is regulated on-board.
3. Using regulated 3.3V voltage, connected to the 3.3V and GND pins. Be very careful with that: do not exceed the 3.3V limit, or your ESP32 module will be damaged.
Attention: be very, very careful to only use one of those options at the same time.
For example, do not power your ESP32 dev kit via the 5V pin using a 10V input while at the same time you have the module connected to your computer via USB. This will surely damage your module, and perhaps even your computer.
Re: Can I power an ESP32 using 5V except USB ?
Posted: Fri Aug 06, 2021 10:44 am
by felmue
Hello @GeorgeFlorian1
have a look at the specs of your board:
https://docs.espressif.com/projects/esp ... ly-options
BTW: I don't think there is a VIN pin.
Thanks
Felix
Re: Can I power an ESP32 using 5V except USB ?
Posted: Fri Aug 06, 2021 11:21 am
by GeorgeFlorian1
I've looked for that page for years and I couldn't find it.
Thank you.
My DevKit uses a Wrover-B so GPIO 16 and 17 aren't usable
In the documentation it says GPIO39 is S_VN and GPIO36 is S_VP, but on my board the labels are VN and VP. What are these pins used for ?
Also, is there a GPIO40 on these boards ?