there have been problems with some libraries with migration from ESP32 Arduino Core 2.x to 3.0 https://docs.espressif.com/projects/arduino-esp32/en/latest/migration_guides/2.x_to_3.0.html you have probably been updated to Core V3.0.7 using Tools>Board>Board Manger try reinstalling V2.0.17 if your pr...

try a web search for ADS1252 Arduino - you will get plenty of links
in particular https://github.com/aeonSolutions/AeonLa ... no-Library

try changing the Partition scheme
click Tools>Board select ESP32 Dev Board under Partition Scheme select Huge App

there are modules with ESP32 and Ethernet on board, e.g. the WT32-eth01https://github.com/egnor/wt32-eth01, the ESP32-Ethernet-Kit v1.2 https://docs.espressif.com/projects/esp ... guide.html, etc

what software are you running on the PC?
how do you tell it which COM port to use?

when connecting microcontrollers to PCs where the Windows COM port or Linux /dev/ttyUSB* port is unknown I usually have the host software (implemented in C++, C#, Java, etc) cycle thru the connected serial ports transmitting a prompt (e.g. a "?") to each device in turn the target device would be pro...

Thanks for confirming that the ESP32 does not support sync manager.

thought it worth checking in case it was something in my code

following on from post "ESP32S3 RMT "no free tx channels" opening third channel" https://esp32.com/viewtopic.php?f=13&t=42301 where a solution was found attempting to run code on an ESP32 with esp-idf-v5.3.1 #include <stdio.h> #include <stdbool.h> #include <unistd.h> // ESP32 RMT 1KHz three phase sq...

thanks, that fixed it! updated code as suggested and in addition fixed timing of pulsePattern3 #include <stdio.h> #include <stdbool.h> #include <unistd.h> // ESP32S3 RMT 1KHz three phase square wave sync test #include "driver/rmt_tx.h" void app_main(void) { // while (true) { // printf("Hello from ap...

if you are using the Adafruit_NeoPixel library it has problems with ESP32 Arduino Core Version 3 when there are more than 85 LEDs - I use ESP32 core V 2.0.17 for such projects