0
\$\begingroup\$

I've had a very simple PCB designed to supply the ESP32 WROOM module with power using a voltage regulator that supplies it with 3.3V.

However, this does not seem to be enough to run the firmware application I loaded to it before hand.

Reading from the docs It tells me GPIO 0 should be high by default when not connected (which it is not.) However when I measure it is at 1.4V (floating)

What am I missing?

enter image description here

\$\endgroup\$
1
\$\begingroup\$

I don't know about IO0's behavior(breaking chip is possible), but I think you forgot to pull up EN pin.

Pull up it like this.

enter image description here

You can see the entire image in official datasheet. It is captioned as "Figure 4: ESP32-WROOM-32 Peripheral Schematics".

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.