My Cheap Automated Grow Room
- Thread starter rwhit7
- Start date
The board, a 9 volt wall transformer, up to 8 DS18b20 temperature sensors, one Honeywell HIH4000 humidity sensor, one solid state relay per output. I was finding some difficulty finding the latest version CAI boards and am currently checking on becoming a reseller for them. There are some of the version 2.2.2 boards on eBay that will work fine. That's what I'm using. For the temp sensors I recommend using the waterproof ones on eBay. They work great and are cheap. The solid state relays I'm using are from China (eBay again). The size of the SSR depends on the wattage of what you are controlling, but in most cases the 25 amp ones will cover what you want to do and are the cheapest. In a nutshell, this is a 'closed loop' system where a sensor sends a signal to the CAI that runs it through your software and controls outputs to match the parameters you set, continuously.
I will post a schematic when I get time.
Here is the drawing outlining the connections. Also attached another pic of the CAI board and a solid state relay. pretty simple stuff.
