Electronics > Beginners
Reverse engineering climate comtrol
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pjhsv:
I have a Bonaire heating/cooling system at my house. Controller is a ct10mc04 panel (power, mode, up, down buttons). Is it possible to use a scope or logic analyser to work out what each button is doing,so I can replicate that with an arduino?

I'm not really sure where to even start with connecting it up. Do these normally run some sort of general protocol or language, or is everything usually custom proprietary, and harder to work with? Are there any online resources for this sort of stuff?
noidea:
The short answer most named brand AC control systems on the market in Oz are proprietary, so monitoring it then brute force is probably the best way to achieve your end result.

Some other hints
Use the actual model number of the air conditioner / heater in your search queries may lead to better results.

A quick google of that model number brought up this
https://www.ebay.com.au/itm/Bonaire-PNE-Wall-Mounted-Manual-Thermostat-Controller-CT10MC04-/133070538047?nma=true&si=%252BMSkaZmuKmyaxJDaagTwAC5HEZE%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

Which led to PNE as the OEM, maybe you could try them but they probably have some sort of NDA with Bonaire, or alternately even speak to Boanire and see if they have any sort of automation interfaces available
http://www.pne.com.au/index.shtml

I would suggest trying the Whirlpool site and the aircon section there as it seems to attract tech/IT minded people and I have seen a couple of posts on doing similar with other AC brands
https://forums.whirlpool.net.au/forum/138?g=222

pjhsv:
Thanks.

I contacted PNE & Bonaire.

Interestingly, one of the Bonaire distributors replied with
"No our controllers don’t adapt to home Automation system YET"

Sounds like there might be something on the horizon :D
magic:
I know somebody who automated such a proprietary system by simulating appropriate button clicks with relays.
Optocouplers would likely be OK too or even better.
pjhsv:
That's a great idea. And simple too!
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