NEO GPS

[sxkod]

Morning

I am struggling to use the Neo GPS module on my ESP8266. I tried connecting to the microcontroller both through USB using Thonny and through webrepl. However, as soon as I connect the RX/TX of micro to TX/RX of the GPS module, webrepl hangs. Thonny sometimes shows the NEMA sentences and then hangs or resets.

It is likely to be due to conflict of using USB interface while using the same UART.
In this case, webrepl should not give me grief right.
Am I doing something wrong?
I tried to instantiate the gps as below
machine.UART(0, baudrate=9600, tx=17, rx=16)
Tried 0 and 1 for the UART Id
I searched online and it appears that others are not facing the same issue!

Thanks for help

Version: MicroPython v1.24.1 on 2024-11-29; ESP module with ESP8266

[robert-hh]

By default the REPL interface at the ESP8266 is UART 0, which is connected by a UART/USB bridge to USB. Therefore you cannot use UART for the GPS receiver at the same time as REPL. Using Webrepl, you can switch the REPL interface to the WiFi connection and detach UART from the REPL.
See https://docs.micropython.org/en/latest/esp8266/quickref.html#uart-serial-bus and https://docs.micropython.org/en/latest/esp8266/quickref.html#webrepl-web-browser-interactive-prompt
Once you have detached REPL from UART using os.duptern(None, 1) you can use the UART 0 for GPS. If you need to print messages by UART, you could use UART(1) to send data,
Note that the labels D1, D2 etc. of the Wemos D1 type board at you picture are NOT GPIO numbers. D1 is GPIO5, D2 is GPIO4, ...

[robert-hh]

The ESP8266 is very limited. Better change to a different board, like an ESP32 or Raspberry Pi Pico W.

[sxkod]

Thanks Robert. A couple of RP2040's are on order currently. Somehow killed the last one while soldering.

[sxkod]

And will try the dupterm and see if I can get somewhere too. Thanks for your response.

[sxkod]

Just to update, yes tat worked well. Thanks