Recent content by CWF

I love math and am very good at it, but I'm not going to read that eye chart sideways stuff, or bother checking someone else's math. Sorry. I'm lazy, and disinterested. It's good you want to do it yourself, and understand it. That's way more that most growers bother with, so good on you for that.

I don't know what voltage your unit runs on. You'll have to figure that out first, or just use the supply it came with.

You don't seem to know the difference between AC and DC power. There is a power supply board that converts the AC wall voltage to the DC required by the fan and TEC element. A transformer will not work: if you put AC on the TEC it will not work, and you might smoke it or worse. I suggest you...

I've got a load drying in a Koolatron 20, the usual setup, and it seems to me to not be able to get the high kPa numbers, at least with a full load of wet weed at 60F. It is slow drying at a low temp, which is what I want, and VPD is creeping up. Initially it was around .45 but now is at .50...

For humidity over 50% (always the case for us), an approximation for calculating dew point temp is: Tdp = T - (100-RH)/5 , T in degrees Celcius (Lawrence 2005) example: 60%rh 60F, Tdp = 46F. Since both DP and VPD use the air temp and RH to compute them, either one works as a drying control...

I've had several great runs in my earthboxes with organic soil made with ProMix base, and the usual amendments. Never had a nute or pH issue. I was running a Piff (PCF Midnight Mass) and an Ace Panama/Bangi haze in 2 EBs side by side, same mix I used previously, just re-amended in both. Started...

I finished wiring up my "Hookatrol". Thought I'd post a pic before I put the back cover on after letting it run a couple days to test (working perfectly). STC-3028 controller $17 shipped, 12V 5A power supply $11 shipped. Donor dehumi $45 shipped. My time? Priceless - er - well, I wasn't doing...

Extra ground for what? 10-50 has two hots and a ground already - what it doesn't have is a neutral. Make sure short term is short.

I am a sparky and an EE and that gives me the fantods. Have an electrician rewire the dryer outlet to a NEMA 14-50R. I take it you don't have a dryer? When I built my little "room" I added two new 20A breakers to my panel just for that, with two 12 AWG romex (copper) circuits to 2 quad outlets...

Perfect. I was mistaken - I checked the pic from page one. It's all good. Just wanted to help if I can. If I had wired mine in parallel, it probably would have smoked the wall supply. Last night I put the dehumi in the cooler with some temporary wires to test it out, set cooler to 60F and rH...

a tech observation I made while fooling around on this build : On the dehumi I am using, (Breezome MCS008 amazon link ), the cooling module inside has 2 Peltier cells, each with it's own pair of red/black wires, but they are wired in series at the board - NOT parallel. In other words, two pairs...

Cut an opening with a moto tool for the controller; top left rear seemed like the best place. I want a nice clean install, plus I'm a cheap bastard. Deciding where to mount the humi sensor inside .. I'll use double-side tape until I figure out the best place. Waiting on dehumi delivery ...

This is the rH controller I'm going to use ($17). It also does temp, but the internal circuit for that works fine and has some cool features, so I'm going to leave the temp control and display as-is, stock. The controller is small and can be mounted in the back side panel space if you cut a...

Looks good. What dehumidifier modules are those? The one from Hook Daddy?

Not a factor for me as I'm not mounting the driver to the frame, I'm using the extension cord. I do see what you mean, though.