A bubble went through my head while in my spa yesterday:
I am trying to find an RGB reader or decoder to read the values on my spa lights ( from a light connector, 4 pins ), could be wifi or zigbee, i have 240v, 120v and 12v available in the spa to power this "reader", I also bave access to a few unused RGB light connectors to connect to under the spa.
Hubitat would then push the RGB values to other RGB controlers, like pool lights and backyard lights.
Maybe the idea is too much or too crazy, but it would be really cool...
Does anyone know of anything that exist to read or decode RGB?
All i find on Amazon, Ebay etc... are DMX decoders for RGB which is obviously not what i am looking for. The coolest thing would be to reverse use a controller as reader.
Please don't throw me rocks, i know it's a crazy idea...
This may not be the direction you want to go, but what if you replace the current lighting from being controlled by the spa, and instead controlled by Hubitat. Then it would be trivial to keep other similar lights synced with the spa lights.
One idea would be to attempt to measure the color of the light from the spa, using a sensor designed specifically for this purpose. There was a user a few years back, who added support to my HubDuino/ST_Anything project to do exactly this, as they were attempting to have their interior lights match the Color Temperature of the outdoor natural lighting.
Here is the ST_Anything source code for the "TCS34725 RGB Illuminance Device". If you're handy with microelectronics, this would be a pretty straightforward project, I think...
You could utilize one of the unused RGB connectors to have a RGB light connected under the spa, and then have the TCS34725 sensor nearby to measure the color and send the data to the Hubitat hub. This is where things get a little less clear to me, as you might need to convert the data from the HubDuino sensor into something that could be used to control other RGB lights.