Hi all... First time posting here. I'm in need of a fan controller for a hydroponic grow room I'm building. I stumbled across Bing's 7.5 Amp Adjustable Fan Controller. I have never learned to read a schematic let alone try to design a PCB from one. Just so happens I was crazy enough to try. Yes, I know I could just buy one, but where's the fun in that?
I'll try to be as specific as I can about my needs as well as post as many pictures as I can. First, I'm wanting to use computer fans because they are a lot cheaper than in-line duct fans. I have three brand new 120mm's just sitting around for the last year anyway. Second, I don't need to move much air. Should never have to evacuate more that 200CFM. Being able to adjust fan speed will be sweet.
The Fans: (3) Rosewill DFS122512H DC 12V 0.4A 74.48 CFM 2000RPM
Fans are not PWM
They will be only moving free flowing air with passive inlet sized at 108 sq in. The Home Ventilating Institute recommends one square foot of open air inlet per 300 CFM of ventilation fan capacity.
OK, here is where I am at. I copied Bing's schematic into ExpressSCH. Imported that into ExpressPCB and got to work. I think I'm finished with the layout, but I'm hoping to get some feedback on the mistakes I have made before I try to etch my first board. Remember, this is my first time doing this... feel free to laugh
I sure hope Bing doesn't mind if I repost his schematic. I just thought it would help someone make sense of my Frankenstein...
Thanks in advance guys!!!
I'll try to be as specific as I can about my needs as well as post as many pictures as I can. First, I'm wanting to use computer fans because they are a lot cheaper than in-line duct fans. I have three brand new 120mm's just sitting around for the last year anyway. Second, I don't need to move much air. Should never have to evacuate more that 200CFM. Being able to adjust fan speed will be sweet.
The Fans: (3) Rosewill DFS122512H DC 12V 0.4A 74.48 CFM 2000RPM
Fans are not PWM
They will be only moving free flowing air with passive inlet sized at 108 sq in. The Home Ventilating Institute recommends one square foot of open air inlet per 300 CFM of ventilation fan capacity.
OK, here is where I am at. I copied Bing's schematic into ExpressSCH. Imported that into ExpressPCB and got to work. I think I'm finished with the layout, but I'm hoping to get some feedback on the mistakes I have made before I try to etch my first board. Remember, this is my first time doing this... feel free to laugh
I sure hope Bing doesn't mind if I repost his schematic. I just thought it would help someone make sense of my Frankenstein...
Thanks in advance guys!!!