Reddit mentions of AGPtek Digital Display PID Temperature Controller SNR(1 Alarms)

(Wiring diagram included in with images)

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I finally put together a basic parts list for those of you that are interested in building a DIY heat treat oven. I've included a wiring diagram, but I take no responsibility for anyone who wants to make one. If you don't know what you're doing, find someone who does. Its up to you to figure out how to mount the door switch, and to design and make a door latch (I made mine on the fly and have to dimensions or drawings).

Its not a project for the faint of heart, but if you have some electrical knowledge, and the help of someone with a welder, its very doable.

I've included CAD files for the frame and electrical box. Any fabrication shop with a waterjet, plasma or laser cutter should be able to cut these for you. I'll give a break down of the parts required and how much I spent on everything. You're prices may vary:

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24x Insulating fire bricks 2.5" x 4.5" x 9". I bought direct from the manufacture for $130 shipped.

MyPin Temperature Controller $35(https://www.amazon.ca/gp/product/B005NGL53W/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1)

Solid State Relay $18 (https://www.amazon.ca/gp/product/B06W9LNZDX/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1)

Thermocouple $15 (https://www.amazon.ca/gp/product/B00XJB4DYQ/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1)

3x KANTOL wire elements $12/ea (https://www.amazon.ca/gp/product/B07CLLW3BG/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1)

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You'll also need to find a 120V+ 20 Amp fuse, a Normally open door switch, and 2 On/Off switches.

DXF CAD Files: https://www.dropbox.com/s/diwuui3qtw247uh/kiln%20layout.dxf?dl=0

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I found the best way to make the grooves for the wires was to score the likes with a 3/16" thick file on is side, and follow that by widening them with a drillbit just under 1/4". The fire bricks are very soft so just take your time and dont force anything.

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Feel free to modify and redistribute these drawings as you wish, but you take your safety into your own hands. Good luck!

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If you're handy, you can use something like this and this and this to roll your own with a slow cooker like this, all fairly cheaply. Plus, you now have a slow cooker.

Edit: extra "have" removed.

Hopville is down for their upgrade to 2.0, so I can't post the exact recipe, but here it is from memory.

Lemony American Wheat

• 5 pounds Briess soft white wheat
  
• 4 pounds Briess 2-row pale
  
• 12 oz Wyermann CaraHell
  
• 0.50 oz Liberty & 0.50 oz Mt. Hood @ First Wort
  
• 0.25 oz Liberty & 0.25 oz Mt. Hood @ 15
  
• 0.25 oz Liberty & 0.25 oz Mt. Hood @ 10
  
• Wyeast American Wheat 1010
  
• dry-hop w/ 1 oz Sorachi Ace and 2 - 4 stalks (1 oz ?) diced lemongrass for 7 days
  
• OG ~ 1.058
  
• IBUs ~23
  
• ABV ~5.6%
  
  I had a bunch of small problems with this beer.
  
  I do BIAB and thought I'd try mashing in around 140F, and then heat to 152F and mash there for 60 minutes. I turned off the heat at 151F, but it just kept rising to 157F. I stirred and stirred trying to bring it down, but after about 7 or 8 minutes I added a little ice, which brought it down to 150F. I let it convert at 150F for about 55 minutes, then stirred while mashing out to 165F. My extraction was still good (83% efficiency), but I don't know what kind of body I'm going to get out of this. My new $25 refractometer seemed to work really well.
  
  Due to high humidity, my boil off rate was lower than I estimated, so my planned 60 minute boil was closer to 90. Then, due to high temps, I couldn't get my wort to chill below 78F, even after 45 minutes with my immersion chiller and a frozen 2 liter. I should have saved the 2 liter for the end when it plateaued. The next time I brew in the summer I'm going to borrow my buddy's IC and put his in a bucket of ice water and use that as the input to my IC.
  
  I setup a swamp chiller in the basement, wrapping the primary bucket with an old towel and set it in the path of the exhaust fan of my dehumidfier. I added some ice to bring the swamp chiller down to 67F, but it rose quickly again to 72F. This might not be the cleanest American wheat after fermenting so high, but hopefully it will be ok. My temperature controller and SSR will be here tomorrow. I guess I should have waited a week until I had temperature control set up and working.
  
  And HOLY COW 1010 stinks like rotten eggs! Hopefully that won't take too long to clear up.