These links can help you regarding how to connect multiple DS18B20 sensors with one microcontroller.
https://randomnerdtutorials.com/esp32-m ... e-sensors/
https://www.theengineeringprojects.com/ ... duino.html

Inspect the MQTT broker/server logs for any indications of issues on the server side.

Have you checked here?
https://github.com/espressif/arduino-esp32/issues/3634

Replace the following line: //char *input = (char *)fb->buf; char *input = (char *)bmpFile.read(); with char *input = (char *)bmpFile.read(); // Read one byte at a time and replace //int fbLen = fb->len; int fbLen = sizeof(bmpFile); with int fbLen = bmpFile.size(); // Get the size of the file See if...

You can find the SPI pin reference here: http://wiki.fluidnc.com/en/hardware/ESP ... _Reference

I think you'll find your answer here: https://esp32.com/viewtopic.php?t=20057

Sounds like there is an issue with that specific USB PORT of the laptop.

Looks like the second account is backed by espressif.

Adjust the timeout values in your WebSocket configuration cautiously. For example, try increasing the network_timeout_ms value to see if it affects the stability.

I'd suggest to test the ESP32 S3 chip-based PCB.