Is it possible to read more than one TTL sensor on serial RX GPIO 10? I know you can add multiple serial sensors on /dev/ttyUSBx

Does the same apply to /dev/ttyAMAx ?


While I have not been able to find a way to read multiple TTL sensors on a single GPIO pin, I did find this way of using other GPIO pins as serial RX pins via the pigpio library. Works great.


And a link to simple python code for reading a given GPIO pin as serial:


  • Please accept your own answer with a click on the tick on its left side. Only this will finish the question and it will not pop up again year for year.
    – Ingo
    Feb 22 '20 at 21:12

Use a MUX IC between the sensors and the pin. That should work.

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