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InvisibleDoc_T
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Current state of the art in humidistats?
    #11179092 - 10/04/09 08:26 AM (14 years, 5 months ago)

Anybody found an affordable humidistat that will work for cultivation?


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InvisibleSlimz
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Re: Current state of the art in humidistats? [Re: Doc_T]
    #11179543 - 10/04/09 10:01 AM (14 years, 5 months ago)

most digital ones are only accurate up to 80% humidity..

a thermometer and analog hydrometer is the way to go..

to paraphrase RR, wrap the analog hydrometer in a wet towel for an hour. then unwrap it and adjust it to 100% humidity. repeat weekly.


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Lazy Drywall Tek (no powdery mess)

This series will blow your mind and confirm what you already know to be true.
The Pharmacratic Inquisition
Best Thread Ever ! ! !

:pm: me if you have questions about lasers

Although i may advise others in a general way regarding all types of mushroom grows, and may even post question from other forums about growing "active" mushrooms, i only grow non-"active" mushrooms and edibles.

FeelFamily resident tech guru

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Invisiblecyb3rtr0n
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Re: Current state of the art in humidistats? [Re: Slimz]
    #11179578 - 10/04/09 10:12 AM (14 years, 5 months ago)

I think he is looking for a control unit to work in 100% RH conditions with spores possibly clogging up sensors, not just a measuring unit.

because, I've been curious of this in the past also..


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InvisibleDoc_T
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Re: Current state of the art in humidistats? [Re: Slimz]
    #11179676 - 10/04/09 10:37 AM (14 years, 5 months ago)

Quote:

Slimz said:
most digital ones are only accurate up to 80% humidity..

a thermometer and analog hydrometer is the way to go..

to paraphrase RR, wrap the analog hydrometer in a wet towel for an hour. then unwrap it and adjust it to 100% humidity. repeat weekly.




"hygrometer". And that's not what I'm talking about. And RR is biased on the issue, you can't go by what he says.


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InvisibleSlimz
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Re: Current state of the art in humidistats? [Re: Doc_T]
    #11179738 - 10/04/09 10:52 AM (14 years, 5 months ago)

oops.. slip of the finger there Doc.. im also a wine maker so i use both and always transpose definitions in my head..


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Lazy Drywall Tek (no powdery mess)

This series will blow your mind and confirm what you already know to be true.
The Pharmacratic Inquisition
Best Thread Ever ! ! !

:pm: me if you have questions about lasers

Although i may advise others in a general way regarding all types of mushroom grows, and may even post question from other forums about growing "active" mushrooms, i only grow non-"active" mushrooms and edibles.

FeelFamily resident tech guru

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InvisibleDoc_T
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Re: Current state of the art in humidistats? [Re: Slimz]
    #11179812 - 10/04/09 11:06 AM (14 years, 5 months ago)

:yesnod: I do some distilling, I have some hydrometers too.

Whether or not it's possible to get a decent digital hygrometer today, it will be possible some day. Electronic devices get better and cheaper all the time, it's a self-evident fact. Sooner or later, it'll turn up.

I went and checked all the big box places, HD, Ace, Lowes. Petco, PetSmart. No good. Those are all close enough to check at once- the local garden garden center is clear across town, but that's my next stop.


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Offlinefundamentalchair
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Re: Current state of the art in humidistats? [Re: Slimz]
    #11179814 - 10/04/09 11:06 AM (14 years, 5 months ago)

by humidistat, you want like a switch to kick on a humidifier when the RH drops to a certain point?

Does it need to be adjustable?

I could probably write up a tek to make one from a hygrometer. It'll be, well, home made but it should work fairly well.


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semper necessitas probandi incumbit ei qui agit


Sclerotia FAQ... If ya ain't got any stones, grow some.

Will work for Laetiporus sulphureus culture/spores (or any other Laetiporus actually), :pm: me.

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InvisibleDoc_T
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Re: Current state of the art in humidistats? [Re: fundamentalchair]
    #11179823 - 10/04/09 11:08 AM (14 years, 5 months ago)

Yeah, that's what I want.
Doesn't really have to be adjustable, it can just be set to 90 or whatever.
I guess I could pull the sensor out of a hygrometer, add an op-amp and a relay... but I'd really rather just buy a pre-built unit.


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Offlinefundamentalchair
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Re: Current state of the art in humidistats? [Re: fundamentalchair]
    #11179840 - 10/04/09 11:12 AM (14 years, 5 months ago)

That sounds complex.

I was just going to suggest drilling a hole in the dial face where you want it to kick on at, putting in a pin to make a connection between the 'needle' and the pin to kick on a solenoid to kick on the humidifier.

If anywhere, garden/landscape places might have one that'll work up to that kind of humidity.


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semper necessitas probandi incumbit ei qui agit


Sclerotia FAQ... If ya ain't got any stones, grow some.

Will work for Laetiporus sulphureus culture/spores (or any other Laetiporus actually), :pm: me.

My Trade list.

Ghetto Tek: Auto FAE & Light

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Offlinegotfungus
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Re: Current state of the art in humidistats? [Re: fundamentalchair]
    #11179930 - 10/04/09 11:37 AM (14 years, 5 months ago)

you could use a mercury switch, in combo with an analog hygrometer, and a solid state relay to turn on a humidifier.


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InvisibleSlimz
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Re: Current state of the art in humidistats? [Re: Doc_T]
    #11180066 - 10/04/09 12:11 PM (14 years, 5 months ago)

Quote:

Doc_T said:
Yeah, that's what I want.
Doesn't really have to be adjustable, it can just be set to 90 or whatever.
I guess I could pull the sensor out of a hygrometer, add an op-amp and a relay... but I'd really rather just buy a pre-built unit.




thats a pretty simple solution..

simple op amp and a potentiometer  is all ya need


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Lazy Drywall Tek (no powdery mess)

This series will blow your mind and confirm what you already know to be true.
The Pharmacratic Inquisition
Best Thread Ever ! ! !

:pm: me if you have questions about lasers

Although i may advise others in a general way regarding all types of mushroom grows, and may even post question from other forums about growing "active" mushrooms, i only grow non-"active" mushrooms and edibles.

FeelFamily resident tech guru

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InvisibleDoc_T
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Re: Current state of the art in humidistats? [Re: Slimz]
    #11200184 - 10/07/09 12:05 PM (14 years, 5 months ago)

I went and got this reptile unit:
http://www.zoomed.eu/Engels/Heating%20Acc/Hygro%20Therm.htm
$100, but it might be worth it if it works out. I'll set it up, let it run for a few days and then report back.


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InvisibleHerbal_Elixer
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Re: Current state of the art in humidistats? [Re: Doc_T]
    #11200227 - 10/07/09 12:13 PM (14 years, 5 months ago)

Cool.. one day I will get automated.


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OfflinesubliciouscompostV
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Re: Current state of the art in humidistats? [Re: Herbal_Elixer]
    #11200457 - 10/07/09 12:52 PM (14 years, 5 months ago)

Good find, im sure alot of people could use one


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Sublicious Compost - Grow your own mushrooms at home!

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Sublicious Compost is proud to offer mushroom kits, spawn jars and spawn bags! Check out SubFarms.com.

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Offlinemilkman59
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Re: Current state of the art in humidistats? [Re: subliciouscompost]
    #11200641 - 10/07/09 01:19 PM (14 years, 5 months ago)



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OfflineRogerRabbitM
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Re: Current state of the art in humidistats? [Re: Doc_T]
    #11200786 - 10/07/09 01:46 PM (14 years, 5 months ago)

Quote:

Doc_T said:
"hygrometer". And that's not what I'm talking about. And RR is biased on the issue, you can't go by what he says.




If you mean I'm biased because every humidistat I've purchased over the years has been ruined the first time it clogged up with spores, then yes.  If there was a way to wrap a humidistat up in a micro filter to protect it from spores, then one might work longer than a month.  For my money, I switched back to timers after the $300 humidistat from fungi perfecti clogged up and quit working after six weeks.
RR


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InvisibleDoc_T
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Re: Current state of the art in humidistats? [Re: RogerRabbit]
    #11202229 - 10/07/09 05:47 PM (14 years, 5 months ago)

Quote:

RogerRabbit said:
If you mean I'm biased because every humidistat I've purchased over the years has been ruined the first time it clogged up with spores, then yes.
RR




For whatever reason, you don't seem to believe that it's possible for such a thing to exist. You've said several times that it is impossible. Sometimes rather angrily.

So obviously, that's not the viewpoint I'm addressing in this thread. I'm looking into the possibility that it does exist.

Will this thing die in six weeks? Maybe. Maybe not. We'll see.

Edit- I imagine you tried washing the spores out of the sensor? What about getting it really dry and then using a little compressed air?


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InvisibleDoc_T
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Re: Current state of the art in humidistats? [Re: Doc_T]
    #11202350 - 10/07/09 06:04 PM (14 years, 5 months ago)

So ok- I have the humidistat hooked to my ultrasonic, inside the GH.
The thermostat side, I tried with a little space heater, but that didn't work out, too hot and dry.
So I plugged a warm mist humdifier in to it, put that on the bottom shelf of the green house. :thumbup: It causes some wicked condensation on the sides, but the cycle is short enough that it doesn't build up, so no flooding. (Yet. Fingers crossed, eyes open.)

It seems to be offset from 'true' calibration. It reads 90 while my other two hygrometers (and my face!) are at or near 100. But if it stays constant at that mark, I can live with that- it's just a matter of dialing in the target %. (Temperature seems about right.)

And this thing has an feature to lower the temp at night! When it sees the the light has turned off, it goes to an optional lower temp that you set. Mushrooms are going to love this!


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InvisibleHerbal_Elixer
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Re: Current state of the art in humidistats? [Re: Doc_T]
    #11202401 - 10/07/09 06:10 PM (14 years, 5 months ago)

Hey, I just read that any digital based hygrometer/humidistat (in your case, I am sure the sensor is the same) should take four hours to read correctly, + 4 minutes for each degree of difference between where it was before to where it is now (inside the GH).. I just left that site.. I will try to find it. But anyway, if it hasn't been that long, then it still may catch up to your face reading (lol).


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Edited by Herbal_Elixer (10/07/09 06:10 PM)

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Invisibleratdog
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Re: Current state of the art in humidistats? [Re: Herbal_Elixer]
    #11202647 - 10/07/09 06:47 PM (14 years, 5 months ago)

i just do not know why people do not use a wet bulb and dry bulb to get the most accurate reading.

put a sock on it.

one reads temp as is one reads temp threw a wet shoe string which will be lower temp than the dry one...............unless its 100% rh and they will both read the same.


sight to get rh from 2 different readings.

http://www.ringbell.co.uk/info/humid.htm

try it and i bet you could use digital X 2 with one wet and displays external.


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some people just don't get it:spank:
http://www.shroomery.org/forums/showflat.php/Number/11241796
so here is a video or two or three for you guys:rolleyes:

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