New Giveaway - Wort Monster Conical Fermenter!

Home Brew Forums > Home Brewing Beer > DIY Projects > Building Stir Plate, BYO style




Reply
 
LinkBack Thread Tools Display Modes
Old 12-29-2009, 01:30 PM   #1
DubbelDach
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2008
Location: Lancaster, PA
Posts: 1,307
Liked 33 Times on 31 Posts
Likes Given: 11

Default Building Stir Plate, BYO style

So using this: Build Your Own Stir Plate as a guide... I started acquiring parts.

Got an 80mm multi-speed fan with sweet green LEDs, a black hard drive case with power switch incorporated, and two 25mm stir bars. Also salvaged two rare earth magnets from a hard drive set to be scrapped at work.



So.... I have limited electrical knowledge (read: none). Inside the case is a small board, and I'm wondering if it would be better to just splice the fan onto a cell charger and rig a different switch. There's no input on the board for the 3-hole plug on the fan (BYO article said to get a case with that, but me = fail). Anybody see anyway this can get hooked up?



Here's the fan switch:



Rest of pics here, if they help... http://s281.photobucket.com/albums/kk238/shiplax27/Stir_Plate/ Thanks in advance!




Last edited by DubbelDach; 12-29-2009 at 03:37 PM.
DubbelDach is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 01:53 PM   #2
Brewmoor
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Brewmoor's Avatar
Recipes 
 
Join Date: Aug 2009
Location: Colorado
Posts: 1,094
Liked 12 Times on 12 Posts
Likes Given: 13

Default

You have all you need. The hard drive had to be powered by the device. So you just need to figure out what type of connection it had. I can't really tell from the picture but it looks like SATA. If so, get a sata power cable and cut one end off. You should have 12v and maybe 5v too on that plug.

I think that is a fantastic idea for a stirplate. You have everything you need all in a pre built case.



__________________

"What the mind can conceive and believe, the mind can achieve."

My build thread. Compact Single Tier!

Brewmoor is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 02:06 PM   #3
whoneedsabeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2009
Location: Wilmington, DE
Posts: 196
Default

If I were you, and wanted to use the existing switch, I'd de-solder the switch from the electrical board, and solder on two lengths of wire to each of the posts coming off the switch. That way you're sure not to power the rest of the capacitors, resistors, etc that are currently existing on the board.

Then use those two new lengths of wire as pig tails and splice into the fan and cell phone charger, because there's really no way for you to plug and play with the items you have. You don't have to solder the fan and cell phone charger wires to the pig tails. Since this will be enclosed, there's nothing wrong with using small wire nuts to make your connections.

The only thing I'd caution you on, is making sure the switch is rated to handle the amps the fan will pull. Most likely you're not going to know what that switch is rated. It might be stamped on the plastic body of the switch? If that switch is rated for 1amp, and your fan pulls 2amps, you're going to burn out your switch, perhaps cause a fire. (I doubt that fan is that powerful, just using round numbers)

Same thing with the thickness of the wire you're using. If the fan has 22gauge wire, make sure not to use anything smaller than that anywhere in your circuit.

One last word of caution. Are you sure your fan is set up for DC power? Some of these small computer fans run on AC power. If that's the case, the cell phone charger isn't necessary, as it won't supply the motor with the correct power.

Is that other wire coming off the fan another switch, or is it a dimmer to control the speed of the fan?

Jay

__________________
whoneedsabeer is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 02:14 PM   #4
Brewmoor
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Brewmoor's Avatar
Recipes 
 
Join Date: Aug 2009
Location: Colorado
Posts: 1,094
Liked 12 Times on 12 Posts
Likes Given: 13

Default

Hopefully without being too disagreeable........

1. That last post is bad info. No computer fans run on 120v All computers are 12v 5v 3v. That is why they have power supplies. There is no line voltage in a computer case.

2. The existing circuit board will regulate the power a bit so you are better off using the existing circuit.

3. The switch will be rated plenty large enough for a fan. The motor on a hard drive will pull more amps then a fan........On the same note. why cut splice and solder when you don't need to.

4. If you read my first post you would have seen that He does in fact have all the parts for plug and play.... Well with one splice.

5. I work in IT. I disassemble and re-assemble computers all day and also build circuit boards for fun. Just in case there is a question about my knowledge of this subject.

__________________

"What the mind can conceive and believe, the mind can achieve."

My build thread. Compact Single Tier!


Last edited by Brewmoor; 12-29-2009 at 02:17 PM.
Brewmoor is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 02:19 PM   #5
Brewmoor
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Brewmoor's Avatar
Recipes 
 
Join Date: Aug 2009
Location: Colorado
Posts: 1,094
Liked 12 Times on 12 Posts
Likes Given: 13

Default

Going OT:

DubbelDach I grew up in selinsgrove about 50 miles north of where your at, along the river.

__________________

"What the mind can conceive and believe, the mind can achieve."

My build thread. Compact Single Tier!

Brewmoor is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 02:28 PM   #6
whoneedsabeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2009
Location: Wilmington, DE
Posts: 196
Default

Well, not all pc fans are DC, just google AC computer fan.

But I agree with you, this one is most likely DC, given the wire harness pic.

And I didn't see your post, as I was still typing mine when you posted.

__________________
whoneedsabeer is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 02:35 PM   #7
CodeRage
Death by Magumba!
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
CodeRage's Avatar
Recipes 
 
Join Date: Aug 2007
Location: Melbourne, Fl
Posts: 2,254
Liked 29 Times on 16 Posts
Likes Given: 5

Default

I like the idea of the drive bay enclosure but I see a critical element missing, speed control. If I throw my fan on at max tilt it will toss the stir bar every time. I am only using one magnet so I don't know if the second magnet is enough to keep the stir bar coupled, I don't think it would.

Using the existing circuitry may be a problem. If you are going to use something like the lm317 to control speed you will have to put it in after the switching power supply circuit. (where the coil and caps are). That is if you intend to use the existing circuit.

Now, I would almost bet dollars to donuts that the silk screened box in the upper right hand corner by that power supply circuit is the output of that circuit for a fan. Take a meter and read the voltage on the two pad in that box to see if there is +12V DC. If there is here is what you do.

Cut the molex connector off the fan.
Splay the three wires out.
Strip the two outside wires back about a quarter inch.
Solder one wire to one pad and the second wire to the other.
The middle wire will not be connected (speed feedback wire)

This will still give you off/on control.

__________________
Brutus 20e build | Electrical Primer for Brewers | Auber SYL-2362A2 PID Install & Config
So as I am walking out the door this morning I think to my self:
"self, going to work on Monday is like knowing you're going to get kicked in the nuts. You just don't know when or by who"
CodeRage is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 03:47 PM   #8
DubbelDach
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2008
Location: Lancaster, PA
Posts: 1,307
Liked 33 Times on 31 Posts
Likes Given: 11

Default

Quote:
Originally Posted by Brewmoor View Post
You have all you need. The hard drive had to be powered by the device. So you just need to figure out what type of connection it had. I can't really tell from the picture but it looks like SATA. If so, get a sata power cable and cut one end off. You should have 12v and maybe 5v too on that plug.
Pretty sure it's SATA:



Are there SATA to Molex connectors? I think I may take the whole thing to Radio Shack and ask...

Quote:
Originally Posted by whoneedsabeer View Post
Is that other wire coming off the fan another switch, or is it a dimmer to control the speed of the fan?
Quote:
Originally Posted by CodeRage View Post
I like the idea of the drive bay enclosure but I see a critical element missing, speed control. If I throw my fan on at max tilt it will toss the stir bar every time. I am only using one magnet so I don't know if the second magnet is enough to keep the stir bar coupled, I don't think it would.
Three speed swith on the fan:



Quote:
Originally Posted by Brewmoor View Post
Hopefully without being too disagreeable........

1. That last post is bad info. No computer fans run on 120v All computers are 12v 5v 3v. That is why they have power supplies. There is no line voltage in a computer case.

2. The existing circuit board will regulate the power a bit so you are better off using the existing circuit.

3. The switch will be rated plenty large enough for a fan. The motor on a hard drive will pull more amps then a fan........On the same note. why cut splice and solder when you don't need to.

4. If you read my first post you would have seen that He does in fact have all the parts for plug and play.... Well with one splice.

5. I work in IT. I disassemble and re-assemble computers all day and also build circuit boards for fun. Just in case there is a question about my knowledge of this subject.
Good info!

Quote:
Originally Posted by Brewmoor View Post
DubbelDach I grew up in selinsgrove about 50 miles north of where your at, along the river.
You made the HBT shirt patches, right? I think we PMed about Selin's Grove... I was there for lunch yesterday. SNAFU IPA is awesome!


Thank you all! I look forward to seeing if there are SATA to Molex connectors... That seems to be the easy fix. Again, I'm not too sharp with electronics and soldering and such...
__________________
The Vineyard & Brewery at Hershey
Follow Brewery at Hershey on Twitter and TBAH_Ryan on Twitter

DD's All-Grain Tutorial
DubbelDach is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 03:52 PM   #9
davebl
Feedback Score: 1 reviews
Recipes 
 
Join Date: Nov 2007
Location: Central Arkansas
Posts: 293
Liked 2 Times on 2 Posts
Likes Given: 1

Default

http://www.homebrewtalk.com/f16/fs-st-stirplate-parts-152918/
__________________
My RIMS Brewery Build Project

Planning:

Primary: Sam Smith Oatmeal Stout

Secondary: Centennial IPA (Dry Hopping)

Kegged: Oberon Clone, Kona Fire Rock APA, Northern English Brown, Centennial Blond
davebl is offline
 
Reply With Quote Quick reply to this message
Old 12-29-2009, 03:53 PM   #10
DubbelDach
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2008
Location: Lancaster, PA
Posts: 1,307
Liked 33 Times on 31 Posts
Likes Given: 11

Default

Quote:
Originally Posted by whoneedsabeer View Post
The only thing I'd caution you on, is making sure the switch is rated to handle the amps the fan will pull. Most likely you're not going to know what that switch is rated. It might be stamped on the plastic body of the switch? If that switch is rated for 1amp, and your fan pulls 2amps, you're going to burn out your switch, perhaps cause a fire. (I doubt that fan is that powerful, just using round numbers)
Markings on the switch: 10(4)A 250V~T125


__________________
The Vineyard & Brewery at Hershey
Follow Brewery at Hershey on Twitter and TBAH_Ryan on Twitter

DD's All-Grain Tutorial
DubbelDach is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
What Magnets/Stir Bar do you use for your Stir Plate? Stevorino Equipment/Sanitation 28 10-04-2013 05:32 PM
building stir plate for yeast starter reelseasick Equipment/Sanitation 6 06-20-2012 06:02 AM
Just another diy stir plate Sounds DIY Projects 0 11-27-2009 10:41 PM
My stir plate in progress,, Lopez style. *pics* fretsforlife DIY Projects 9 04-09-2009 02:56 AM
Stir Plate Hopfan Equipment/Sanitation 0 11-11-2006 01:50 AM