ESP32 Forum

Posted: **Sat Jul 27, 2024 6:47 am**

Hello,

I was using a esp8266 earlier, but now I have started using a ESP32-S3-WROOM-1. My RX and TX pins are on pin 37 and 36 respectively. (PFA image for reference.) I can confirm that the board is working fine but none of the data from the pixhawk is being shown on the serial monitor on arduino ide. I believe the rx and tx pins are the problem. Can someone give me a technique to code using cpp or give me a solution to this problem?

Posted: **Sun Jul 28, 2024 1:08 pm**

More info/details/code needed.

Posted: **Sun Jul 28, 2024 5:33 pm**

If you swap the TX and RX pins, are you being able to establish the USART communication?

Posted: **Fri Aug 02, 2024 12:45 am**

Please inform the name or model of your ESP32 S3 board.
See what is written on your board - TX and RX on the top right side. These are the UART pins.

In the case of the ESP32 S3 DevKit, these pins are used to UART:

: ESP32S3 TXD RXD.JPG (13.37 KiB) Viewed 1201 times

https://dl.espressif.com/dl/schematics/ ... 220413.pdf

https://docs.espressif.com/projects/esp ... -reference

https://docs.espressif.com/projects/esp ... t_v1.1.jpg

: ESP32-S3_DevKitC-1_pinlayout_v1.1.jpg (450.21 KiB) Viewed 1200 times

ESP32 Forum

Mismatched RX and TX pins

Mismatched RX and TX pins

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