protocol between in.touch and controller?

[Elwell]

Hi - Have you ever identified the pinout and dumped the traffic between the in.touch receiver and the spa controller itself?
I know your geckolib is based on sniffing the transmitter to internet traffic, but I'd like to work on (likely an ESP32 esphome based) a single box replacement for the in.touch pair that connects directly to Home Assistant

[Elwell]

Total guess (based on the other products that can plug into that port like the 'in.stik') is that it's actually a USB connection with a with DIL pinout rather than the normal "consumer" connectors. but that's as far as I've got with investigations - I'll hook up a logic analyser once weather's a bit better

[rct]

IIRC correctly, someone on the Home Assistant forums went as far as discovering that RS-485 was being used., but there might be more than just RS485 on the 8 pins of the CO ports.

There is an attempt to start a thread over in the Esphome/feature-requests repo: esphome/feature-requests#2893

Most of the bits of digging/reverse engineering people have done have been scattered around. Another issue here had a lot of useful pin probing info: #8 (comment)

[gazoodle]

I've only ever sniffed the traffic between the in.touch module and the iOS app, but since I started this project, I have upgraded our spa (and of course I raided the old one for it's control system) so I have an entire piece of hardware to muck around with ... if only I had the time 😂