Yes, it’s just an RC timing circuit but seeing as how the Raspi doesn’t have an analog input, we figure this tutorial could help out a few people. Posted in Raspberry Pi Tagged analog sensor ...

Using an analog temperature sensor, ... and a low-dropout linear regulator, this circuit provides a 4-to-20-mA output over a 3.75- to 28-V compliance ... Pi Day 2025 and the State of Raspberry Pi.