Hi, does anyone got a clue how to do a 5V analog input towards the Photon?
Also I wanna note that I have the bare sensor and not a breakout module
Use a voltage divider to scale the signal from 0-5V to 0-3V
Yeah I was told that all until someone told me that the impedance would be off.
Apparantly the Photon has a STM32F205 that has quote from irc: “4pF sample & hold cap with 50k of series resistance” that would mean that at low samples they said you’d have problems.
I think I need to use an opamp for this to buffer.