I have an ESP32-Cam and I need to work with more serial ports because ESP32-Cam has one hardware serial port I use this port for connection with the USB-TTL converter, but I need to connect ESP32-Cam to Sim800L either. it didn't work when I tried to communicate to SIM800L with the software serial library. Is there any way to connect sim800L and USB-TTL to the esp32-cam simultaneously?
Your topic was MOVED to its current forum category which is more appropriate than the original as it has nothing to do with Installation and Troubleshooting of the IDE
The ESP32 has more than one serial port. I don't know which ESP-32 CAM model you have or if the necessary pins are tied up in the camera interface, but you might consider having a look at this tutorial as regards using the other UARTs on ESP32
Whatever ESP32-CAM module you have, you very likely have extra pins available and could use them for the other UARTs.
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