Come into my lab

forScience

New Member
I always wanted to get on overgrow, but I wasn't really growing when it was in operation. So I did some searching and, it seems this and grasscity seem to be some of the better grower sites I found, but they block tor users from registering:clap:, so here I am.

I have done a few grows in the past, I moved from a closet to a room within a room, with 48 plants under 2 x 600 W HPS on a light mover, and a 50 gallon recirculating deep water culture system, with gravity feed automatic top off. Then took a break for a while.

I just setup a mother chamber and a 36"x36"x64" and one of my 600 W bulbs in a cool tube. Carbon filter outside, exhaust to the outside. Eventually I will exhaust it outside the room entirely to create a negative pressure in the room, and force all the air to go through the carbon filter. In any case, this leaves no exchange inside the grow chamber, so I plan to use CO2 supplementation.

Then, I am building an entirely identical system right next to it. I plan to run them on different light cycles, over the course of a few grows, to gather data on how much of a difference it makes. This same setup has a lot of possibilities. Of course, I intend to smoke the output for my head, so, it has to produce. If all goes according to plan it will produce both enough bud to last crop to crop, and enough good data to write some papers, and settle some questions.

Currently I have the first system setup and running its first test crop, which is mite infested (see my thread under plant problems/bugs)....or was, they are being beaten back pretty hard now. Teach them for putting their dirty mouthparts on my girls.

In parallel to this, I am trying to figure out exactly what data I want to collect on a day to day basis. I have been messing around with some PERL code for shoving it all into a database: ph, tds, water delta, solution temp, air temp, humidity. Ideally CO2 levels too, but I am not up to that point yet.
 

unix60959

New Member
what would be sick is if you had sensors that measured all that and took real-time data via computer system.. Im an electrical and computer engineer, currently studying at university and next year will be my senior year. anyway i had an idea the other day to automate a hydroponic system via computers/micro-controllers and use sensors to create a feedback system. the system would allow you to set your conditions and the sensors would make sure that the system stays within bounds. But the implications for storing and correlating data would be available as well. I simply imagine a grow room/booth with a touch screen on the outside for control....

EDIT: the only thing i am unsure of is what needs/could be automated.. as ive never grown b4 and only know what ive read online..
 

forScience

New Member
what would be sick is if you had sensors that measured all that and took real-time data via computer system.. Im an electrical and computer engineer, currently studying at university and next year will be my senior year. anyway i had an idea the other day to automate a hydroponic system via computers/micro-controllers and use sensors to create a feedback system. the system would allow you to set your conditions and the sensors would make sure that the system stays within bounds. But the implications for storing and correlating data would be available as well. I simply imagine a grow room/booth with a touch screen on the outside for control....

EDIT: the only thing i am unsure of is what needs/could be automated.. as ive never grown b4 and only know what ive read online..

You and I are very much on the same wavelength. I have looked a bit into this. Temperature is easy. humidity too. You can get sensors from any electronics supplier, hell The Shack sometimes has them in the store. On the other hand TDS and PH can be trickier. I found this web page a while back: http://www.octiva.net/projects/ppm/

Seems like an excellent starting point. I even have a breadboard somewhere where I started messing around with the design presented there. I, however, am not an EE, and am teaching myself as I go (which got some amused comments from an old geek who commented about how kids these days don't really study analog signals).

My dream is an arduino collecting data, an xbee link back to a pc slurping in data. XBee even supports encrypted operation, so you don't have to worry about random people finding your system interesting or logging your data without your knowledge. In fact, it would all dovetail nicely into a whole home automation system.... that's another rant.

Might be easier/cheaper/more secure/flexible to toss around a few wifi bridges and build devices to connect to their ports.

Anyway my full list of metrics/controls would be:

Metrics:

Air Temp*
Soil/Media Temp
Humidity
Electrical Conductivity
CO2 Concentration
PH
Water Addition Volume**
Runoff Volume


* Temperature sensors are cheap. Air inlet temp, air exhaust temp, ballast temp
** This likely has different meanings in different systems. I run DWC, with a gravity fed float valve. So instead of doing add-backs, I just refill my feed bucket and note the delta. It is a metric not a procedure.

Controls:

CO2 flow

The rest can be accomplished as remote power switches for A/C power:

Fans (circulation or exhaust)
Pumps (circulation, irrigation, mixing, aeration)
Lights


That is all I can think of. It is all pretty doable.....

bongsmilie... then you toss a tor location hidden service on the PC, Build a ROV with an arm/clippers/grabbers and a camera, a water supply bucket with float, system for remotely mixing nutes, few extra pumps for flushing and refilling..... how many sites do you think one person could run?
 
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