ESP32 Forum

I have done some investigation and so far this is my status:

EDIT: The power consumption problem is not only happening in deep sleep but also in on state of the ESP32!

- My ESP32 gets 3,3V directly to the 3,3V pin on the ESP32
- The Power LED has been removed
- I have the example deep sleep sketch running on the ESP
- MOST of the time it consumes 13mA in dep sleep

BUT when i connect the USB cable to it. The power consumptions suddenly drops to 4mA. Or sometimes i restart the ESP32 with the USB cable attached and it still uses 13mA. But then when i unplug the USB cable. It uses only 4mA. This is kind of random and not always the same. But the powerconsumption definitely drops when i plugin or remove the USB connection.

So i tried to give 5V to the USB (without any other USB pins) but that didn't change anything. It must have something to do with the other two USB pins which go to the USB UART converter (CP2102).

This video shows what i mean: https://youtu.be/AiU6VKYXP0k

Anybody an idea?

i am dealing with the same (worse) problem. Deep Sleep power consumption is 12mA on the naked dev-board (with the LED removed). I even run the board directly from 3,3V to the 3,3V pin. So i don't even use the LDO.

But you are applying 3.3V to the output pin of the LDO, so the LDO could still be leaking current.

That's what i thought too. But even i cut the LDO off. No change. Hmm.

Andreas Spiess maintains a table with details of many ESP32 boards including power consumption in different modes and the used voltage regulator. Here is a video about "Test of Battery operated ESP32 Boards". A link to the comparison table is in the description.

https://www.youtube.com/watch?v=ajt7vtgKNNM

Andreas Spiess maintains a table with details of many ESP32 boards including power consumption in different modes and the used voltage regulator. Here is a video about "Test of Battery operated ESP32 Boards". A link to the comparison table is in the description.

https://www.youtube.com/watch?v=ajt7vtgKNNM

Yes. I have seen this video before. Unfortunately it does not include the standard ESP32 DevKit1 which i am using and need to modify.

I'm using Esp32DevkitV1 (with AMS1117), and it was consuming ~4ma in deep sleep. After cutting-of off AMS1777 (enough to cut big leg) - consumption has dropped to ~12 microampers. Powered via 3.3V pin directly from 18650 battery.