WiFi and bluetooth are normaly used to communicate between boards 😉 If you need a wired connection, then it will depend on your requirement, speed, data size ect. ? I have testede serial between two esp32 and it works fine. What issue/problems do you have using serial ? And what have you tryed to ov...

If this statement: // I got One ESP32 to produce a Square wave and send that through 1 wire to another ESP32 that reads the pulses , everything worked perfectly and it was so stable , but once we connect mains power .. we get those erratic readings // Then your problem is with your power circuit and...

You add the two file a local file to your program and included MPU6050.h in you Main file.

This way you dont overwrite any other files.

Sorry, selected wrong link, you should use MPU6050 .h & .cpp from this link:
https://github.com/nkolban/esp32-snippe ... /cpp_utils

I have not try that lib, so cant tell. I did some test last year, using Kolban's code and it works fine for me: https://github.com/nkolban/esp32-snippets/blob/master/hardware/accelerometers/mpu6050.c Some times it can be the naming of the I2C pins, so you can try swop them, depending on your mpu6050...

Does your mpu-6050 lib support the esp32 ?

I dont know how to upload pictures.

Picture 6 in the link you provided is the pinout of the module, so what are you looking for ?

Please share a picture of your board (both side) and from where you got it ?
There is a lot of different board and manufactors out there

Do you have s DNS server connected to the AP ?

If not you need to add one or write a DNS server code for the esp32.

When you cant use DNS, then you have the other optioner, I have used http get and IT works, have seen a ping lib, but not testede any.