I'm trying to build some integration between my custom Arduino-based home controller and my Spa, which is a Spa-Quip (Dawey?) SP2100.
I'm hoping to connect something logically similar to a second touch pad controller that the SP2100 supports, but that is really an Arduino and/or XBee that then talks RF to my home controller via RF.
What I need at a minimum is what the protocol is between the SP2100 and the touch pad. I've looked at the wires with a logic analyser, but quickly got to the end of my limited knowledge!
Any/all help would be appreciated from someone who knows the SP2100 and what/how it communicates.