Basic $5 stir plate

Had a 4 11/16" computer fan from an old computer case, had a 12 volt wall adapter, tore out a magnet from a hard drive. Had to pay $4.95 for the stupid stir bar (hwy robbery) at the brew store,.. doesn't get much easier... I may add a simple voltage divider circuit with a potentiometer to give it speed control if I need it, but I will probably leave it as is...

my first version was a smaller fan and it had a hard time starting without a nudge, this one works MUCH better!

is this sitting right on the fan? Looks good though and is deffinitly doin what it needs to. Cool.

sweet, i was looking for a chaep stir plate

scinerd3000 said:

is this sitting right on the fan? Looks good though and is deffinitly doin what it needs to. Cool.

Click to expand...

Yes, makes a perfect platform for a 2 liter flask. The hard drive magnet glued to the top is shoter than the edge of the fan so it needs nothing else!! KISS!

Nice! That's about as KISS as it gets.

Superb! That's a 12 volt out wall adapter ...how many mA?

200mA adapter!

I can't quite see where the magnet is glued from the picture. Is that it in the center?

Edit: Nevermind, I see it.

yep, it would move to the side as I was trying to glue it in place if it was not perfectly in the center. I have another one I was going to add if it needed it but the first one is so close to the bottom of the flask it grabs it great and never throws it...