I have an installation using pd and some sensor that I'm getting the data from Arduino to pd via serial.

The installation should run for 4 month without stop.
How can I make sure pd is always on? As well as the Pi4 ?
Does the cable of the serial make difference? or If the cable I'm using is working now I can be sure it will work?

Thanks

I don't see any reason why it would stop. Just make sure that the Pi doesn't heat up. It's a good idea to use a heat sink, even just a small one, and maybe a fan to cool it down.
Also note that some Arduino functions like millis() and micros() will reset after some time. millis() resets after 72 days or something like that, and micros() after 72 hours, or something like that. Check the docs.

@alexandros said:

I don't see any reason why it would stop. Just make sure that the Pi doesn't heat up. It's a good idea to use a heat sink, even just a small one, and maybe a fan to cool it down.
Also note that some Arduino functions like millis() and micros() will reset after some time. millis() resets after 72 days or something like that, and micros() after 72 hours, or something like that. Check the docs.

Thanks . I already make sure I have a heatshink and a fan for the PI!
regarding the reset of millis() . I gues it would be enough to turn off and then on again after two months or so..