Seed bed controller, the VeGITRoN

[gabir]

Spring is coming and I am growing vegetables from seeds. One of the problems I always had with this operation is that when I use warming mats (which I put under the seed trays to warm them up) they usually get too hot, or not hot enough. I want to control the temperature exactly in two different beds and I also want to turn on the grow lights at set times of the day. So I am using an older CAI Webcontrol board to control my seed trays and their lights. Presently I have two waterproof temperature probes, two warming mats and two lights. Here is the code I use, which is working great. I have set latency to 2 degrees F so that the mats dont cycle on and off too often. Temp are set at 60 and 68 F max. My girlfriend calls the machine the Vegitron.
 

 
 
 
START    
    CALLSUB LIGHTS1   
    CALLSUB LIGHTS2   
    CALLSUB TRAY1   
    CALLSUB TRAY2   
    END    

LIGHTS1:
    TSTEQ CH 22  
    SET OP3 0  
    TSTEQ CH 6  
    SET OP3 1  
LIGHTS2:
    TSTEQ CH 22  
    SET OP4 0  
    TSTEQ CH 7  
    SET OP4 1  
TRAY1:
    TSTLE T1 580  
    SET OP1 0  
    TSTGT T1 600  
    SET OP1 1  
TRAY2:
    TSTLE T2 665  
    SET OP2 0  
    TSTGT T2 680  
    SET OP2 1

 

[dgage]

I wouldn't use that this year but I could see either my wife or I using it for something next year or for indoors. Right now I need enough mats to grow 3000 sq ft of grass sod...do you know where I can get that?

Seriously, thanks for sharing, especially the details and code. Good stuff!

David