ESP32-S2 Power supply

yomogi
Posts: 1
Joined: Tue Aug 04, 2020 9:59 am

ESP32-S2 Power supply

Postby yomogi » Tue Aug 04, 2020 10:14 am

Hey guys,

i'm new to this and i'm starting a new project. I'm a little bit confused by the informations given to me.
I purchased the ESP32-S2-Saola-1 and read through the dataheet and several guides.
I want to connect two sensors which need 5V power supply.
As far as I understand the specifications correctly the board provides 3,3V and 5V power supply.
Can I use the mini-usb port for power supply, to ge the 5V I need for the sensors or should I use an external power supply for this?

ESP_Sprite
Posts: 9594
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32-S2 Power supply

Postby ESP_Sprite » Tue Aug 04, 2020 11:15 am

It's a tad hairy as the maximum power requirement for the ESP is pretty close to what USB can deliver at max, but as a rule of thumb, as long as your sensors don't use too much power (say 50-100mA max), you should be able to power them safely from USB.

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