I have a very strange and frustrating problem.
I have four ESP32s and two Access Points on my network.
All the ESP32s are setup the same, exactly the same code, except for server names etc.

So, here's the problem:
I have ESP1, ESP2, ESP3 and ESP4
I have a main router with AP1 and AP2 connected with ...

Hi,
I have an ESP32 running a lighting circuit.
When I switch the circuit on the ESP gets power and the ESP is programmed to switch on a relay (connected to a light) in the setup routine.
The relay switch-on is practically the first command after initializing the GPIO pins in the setup routine.
My ...

Hi,
I have an ESP32-S dev. board which I am using to control sound and LEDs.

The LEDs are on GPIO_17 and controlled using the FastLED library.
The sounds are generated with the tone() command and I am using the Tone32 library.

My sound output is on GPIO_2 and the channel is set to 0, as follows ...

Not sure what you mean by "profile". I am using a NodeMCU-32S dev module.

What version of Bluetooth must my device (smartphone) have to communicate with an ESP32 based project?

Thanks, Ray

What is the "fix/workaround" for this?

Sorry, yes I should have made myself more clear.

First, I took my original, working, Arduino sketch (as shown on GitHub).
Then, I changed the pin numbers to match the GPIO pins on the ESP32. I also changed the baud rate for the Serial monitor.
And that's all I did.

I was hoping (expecting) to get ...

I have a small sketch I would like to port to the ESP32, but I can't get it to work.
The Arduino sketch and partially modified ESP32 sketch are here: https://github.com/Account-Git/Arduino-to-ESP32
Please, can anyone help?

Something so simple shouldn't be this difficult.

I have an Arduino project that I am trying to convert to run on an ESP32.
My project receives data from a 74HC165 shift register via SPI.
I have purchased a NodeMCU-32S board and connected my project as follows:

GPIO Pin 19 - Connects to Pin 9 (QH) of the shift register
GPIO Pin 18 - Connects to ...