Hi, I’ve ESP32 DEVKIT V1 and 9v Adaptor power supply. Can I power the modules via VIN connections with the custom 9V 2A adaptor directly? This is my project block diagram [Diagram BLOK ALAT REVISI RAMA] I am glad about any help. Thank you!

What are the total current requirements of the sensors and relay connections that will be using the 9V? I have tried using 800ma 5V regulators for the ESP32 developer boards. 800ma did not seem to be enough as the regulators only lasted a few months. I have had great success with just supplying 3.3…

External Power Supply ESP32 with 9V Adaptor

Projects General Guidance

Idahowalker August 23, 2021, 7:51pm 7

As stated in post #6, do not supply the relay board with 5V power from the MCU. Which makes another case to supply the ESP32 with 5V instead of 9v.

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External Power Supply ESP32 with 9V Adaptor

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