Powering ESP32

Other Hardware General Electronics
1

Hi,

I am powering my ESP32 with the a 5V 2A adapter.

It seems it have worked the first week but now the ESP32 shuts down(light off) after some minutes. The adapter is also getting warm. Am I powering the ESP32 wrong?

Made the connection based on the following:

A regulator on the board supplies the ESP-WROOM-32 module with 3.3V derived from the USB 5V.

Source: ESP-WROOM-32 Testing | First use of ESP32 Devkit Board

Maybe my adapter is not the same as an USB 5V?

2

How warm? Does the regulator on the ESP32 module get warm? (that's the black rectangular chip, fairly large, with 3 pins on one side, and one much wider pin (called the tab) on the opposite side).

Is anything else connected to it.

Does it work with a different 5v power source? Try a different phone charger. I thought the ESP32's sucked enough power to prevent this, but some USB 5v charger devices will sense low current and decide "Okay, device is charged, time to save power by shutting down"

3

The adapter gets warmer then it should according to me... The ESP32 seems to be off(=cold).

After reading the reply I spent the day fail searching:

  • Without anything connected to the ESP32 it continues failing.
  • After replacing the adapter to an big Apple adapter(5.1V and 2.1A) it now seems works as expected.

I guess the problem has to do with the poor quality adapter I have bought. A bit sad when I bought 10 of them. Do you think an capacitator could help by making the adapters power more stable?

If there is any other recommendations for EU-wall-outlet charger please let me know. The Apple chargers feels a bit to expensive. But maybe for a good reason?