I recently purchased a Cat Litter Robot and want to intergrate it into ST.
I’ve seen a topic where an open/close sensor is mounted onto it to detect the robot ‘rotating’ the litter and a DTH/SmartApp developed to digest that data.
However, I’d like to do a more precise integration if possible and leverage all the sensors that are already part of the robot. It looks like the Litter Robot has a wiring harness that is used to communicate control of the motor(s) and read sensor(s).
I’m wondering if it might be possible to monitor these circuits by tapping into the harness and detecting when these circuits are active with something like an ESP8266/NodeMCU. I was thinking the GPIO pins could detect a hi/lo state, but I’m not sure what needs to be done circuitry-wise to monitor the signals in the harness and convert that to feedback for the GPIO pins to detect.
Any thoughts? (Besides telling me it will void my warranty. )