Fuel flow sensor using GPIO pins: pull-up voltage

[junkman (Tomi Honkanen)]

@Alvin

The servo rail on carrier board does not provide power. You have to supply voltage to it so that you could power any device connected there.
You may check the voltage range from docs.cubepilot:
The Cube Module Overview - CubePilot

I understand this. I know how I am going to power the sensor. My question is only about the signal pin.

For the PWM voltage level, you may have a look at this topic:
Relay voltage? - #4 by Kravos

This topic concerns output functions, but it is not helpful to me, since I am using the GPIO / AUX signal pins as inputs. I think I will do some testing to see if the 3.3V is present in the pin after it is configured as an input.