Electric Brewing Supply 30A BCS Giveaway - Last Chance to Enter!


Home Brew Forums > Home Brewing Beer > DIY Projects > Show us your DIY stir plate!
Reply
 
LinkBack Thread Tools
Old 01-23-2013, 07:11 PM   #211
LoloMT7
Feedback Score: 22 reviews
Recipes 
 
Join Date: Jan 2012
Location: Missoula, Montana
Posts: 1,866
Liked 1248 Times on 666 Posts
Likes Given: 3358

Default

Hook the negative from the wall adapter straight to the negative on the fan. Then hook the + from the wall adapter to the potentiometer then the other pin form the potentiometer to the fan. The "ground" pin if there is one should not be used on the potentiometer.

__________________
LoloMT7 is online now
 
Reply With Quote Quick reply to this message
Old 01-23-2013, 07:14 PM   #212
LoloMT7
Feedback Score: 22 reviews
Recipes 
 
Join Date: Jan 2012
Location: Missoula, Montana
Posts: 1,866
Liked 1248 Times on 666 Posts
Likes Given: 3358

Default here is a link scroll down to the wiring part

http://www.brewmorebeer.com/building...e-for-brewing/
__________________
LoloMT7 is online now
 
Reply With Quote Quick reply to this message
Old 03-04-2013, 06:32 PM   #213
iainwb
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2013
Location: Tuscaloosa, AL
Posts: 10
Liked 1 Times on 1 Posts

Default My stir plate

So I finally built my stir plate. It was about $30 in the end, so I saved about $20 over the cheapest that I have seen online. The power brick, magnets and the fan were free. I bought a PWM speed controller on eBay for about $8 to control speed, after reading up on the pros and cons of rheostats and voltage controllers. I was not interested in doing any soldering. I can get everything from a gentle stir to a large vortex in my 2L flask.

photo-1.jpg   photo-2.jpg   photo-3.jpg   photo-4.jpg  
__________________

Reason: typo
iainwb is offline
LoloMT7 Likes This 
Reply With Quote Quick reply to this message
Old 03-14-2013, 02:39 AM   #214
KZE80
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2012
Location: Denton, TX
Posts: 52
Liked 32 Times on 18 Posts
Likes Given: 3

Default

Just finished. Only missing the magnet.

Bought a 4 pack of 12v fans from Newegg for $11.00 and I've got a small fruit crate lying around that would be perfect for a double stirplate. Think I'll throw that together pretty soon.

If someone had told me 1 year ago that I'd be this excited about yeast I would have slapped them and then thrown up from laughing so hard.

...yet here I am...contemplating the purchase of Petri dishes and vials. Who knew?!?

image-4127507571.jpg   image-2223419749.jpg  
__________________
KZE80 is offline
 
Reply With Quote Quick reply to this message
Old 03-14-2013, 05:38 PM   #215
stamandster
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: springfield, ma
Posts: 761
Liked 51 Times on 44 Posts
Likes Given: 26

Default

Quote:
Originally Posted by TrickyMike View Post
Kind of plain jane, but it works pretty well. I have a 2L Flask on order.

I used a 110V fan and a plug-in dimmer. I have a really good electronics store locally and the staff are guys that generally know their stuff. One of the guys I've had help me before recommended that I use a 110V fan and a dimmer so I didn't have to worry about losing torque at the lower speeds. Of course, it's high voltage, so you have to be a bit more careful. Seems to work pretty well. Spins a 2-inch bar really well. I have 2 neodymium magnets hot glued to the fan with opposite poles facing up. I have to admit, though, I expected a lot more torque with the 110V fan.

I just pulled the guts out and mounted them in the case.
What'd you use for the box??
stamandster is offline
 
Reply With Quote Quick reply to this message
Old 03-15-2013, 01:23 AM   #216
cooldood
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2013
Location: Belgrade, Maine
Posts: 548
Liked 117 Times on 90 Posts
Likes Given: 38

Default

My basic but works model

__________________
cooldood is offline
 
Reply With Quote Quick reply to this message
Old 03-15-2013, 02:22 AM   #217
bsomogyi
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: Erie, CO
Posts: 100
Liked 18 Times on 9 Posts
Likes Given: 1

Default

Here is my stir plate. Couldn't pass up these little metal boxes from the hobby lobby. They are the perfect size for a stir plate.

img_0248.jpg  
__________________
bsomogyi is offline
mpride1911 Likes This 
Reply With Quote Quick reply to this message
Old 03-16-2013, 04:13 PM   #218
alien
Feedback Score: 1 reviews
Recipes 
 
Join Date: Apr 2012
Location: Philadelphia, PA
Posts: 1,235
Liked 65 Times on 58 Posts
Likes Given: 61

Default



Parts list:

1 Dell PC fan (junk)
1 LM2596 adjustable step down DC-DC converter (ebay, $1.54 shipped)
1 10K ohm linear taper potentiometer + knob (Tayda, $0.50 + $0.22)
5pcs Neodymium disc magnets, 3mm x 21mm (ebay, $1.35 shipped)
1 large penny washer (Ace hardware, $0.37)
1 barrel-type DC power jack 2.1mm (Tayda, $0.16)
1 12V power supply (junk)
1 food container
3-pin angle header, 0.1" pitch (Tayda, from 40 pin strip $0.17) (optional)
3 female-female jumpers (ebay, from 40-way strip, $2.80 shipped) (optional)
Epoxy resin
Hot glue
Solder
Hook-up wire

The step down DC converter came with a 10K multiturn trimmer that was too fiddly to use, so desoldered it and put a 3-pin header in its place. I connected a 10K potentiometer to the header using jumpers, but I could have just soldered wires in place. All that remained was to solder the barrel jack to the inputs and the fan to the outputs, and hot glue the fan in place. I used epoxy glue to stick a penny washer on the top of the fan and stick the Neodymium disc magnets to the washer. Total cost, less than $5 but I had a few bits and pieces lying around.

If I can be bothered, I'll put in a little microcontroller like a Attiny2313 to monitor the tachometer output from the fan and show the RPM on a 4 digit LED display.

Edit: RPM meter up and running but needs a few tweaks.
__________________
Magic Smoke brewhouse and grill

Arduino PID controller - Automatic Smoker - Cooler MLT - Counterflow Chiller - SSR demo - PWM timer - Folding Brew Table
alien is offline
 
Reply With Quote Quick reply to this message
Old 03-17-2013, 10:59 PM   #219
TMadness1013
Feedback Score: 1 reviews
Recipes 
 
Join Date: Jul 2012
Location: Rochester, NY
Posts: 43
Liked 2 Times on 2 Posts

Default

Back when they were the hip new thing, I bought an external DVD burner and it came housed in this unit. This made my build super easy as I was able to use the existing power supply and just had to hook all the cables up. The only downfall is that with the DVD drive, the outside of the box lit up with really cool blue lights. I haven't been able to make those work, but it looks pretty slick otherwise and was a super easy project.

image-3246198489.jpg   image-3659622552.jpg   image-3557657726.jpg   image-2610055376.jpg  
__________________
TMadness1013 is offline
 
Reply With Quote Quick reply to this message
Old 03-19-2013, 07:52 PM   #220
KZE80
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2012
Location: Denton, TX
Posts: 52
Liked 32 Times on 18 Posts
Likes Given: 3

Default

My fruit crate double stir plate. Just mocked up for now.

image-749880312.jpg  
__________________
KZE80 is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stir plate stir bar. . . What size? Bonwit DIY Projects 21 12-28-2013 02:09 AM
DIY Stir Plate, Stir Bar attracted to mounts littlejon326 DIY Projects 5 03-13-2011 02:12 PM
Stir Plate w/ Stir Rod in Boil Kettle resslerk DIY Projects 6 03-20-2010 07:10 PM
Help With Stir Plate Please! tkone DIY Projects 7 07-27-2009 03:22 PM
Stir plate help polarbearbrewing DIY Projects 2 07-21-2008 03:39 AM