I've been running a $10 RS485 adapter to monitor my pool equipment and extract some extra data from it (pump power/rpm, SWG performance,...).
Now I'd like to automate the measurement of Ph and ORP using some Atlas Scientific probes.
I would like to do this by faking the protocol of a Jandy Chemlink system, so the data shows up on the RS485 bus.
Has anyone looked at this protocol? I can decode it from a sniffer, but I don't have the Chemlink device installed. I tried reverse engineering the Aqualink simulator communications, but without result so far.
I have a full set of scripts and tools to look at it if anyone has an RS485 adapter and a Chemlink C1900 (or similar) device.