chuckjaxfl

Recipes 

I've been trying to come up with SOME advantage this idea would have over a magnet glued to a fan. I haven't been successful.

That said, I'm going to try it anyways. Here's a rough prototype.

lewdog50

Recipes 

Interesting

theonetrueruss

Recipes 

neet

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TheOneTrueRuss
Fat Messiah Brewing

passedpawn

Recipes 

cool.

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Now there's some take delight in the carriages a rolling
and others take delight in the hurling and the bowling
but I take delight in the juice of the barley
and courting pretty fair maids in the morning bright and early

chuckjaxfl

Recipes 

Thanks!

The electromagnets are these.

They are driven with an SN754410 h-bridge, which is controlled by an ATtiny84. It's not very stable, the magnet will only spin at a specific RPM.
But, hey, this is just a start. I'm receptive to any ideas anyone has to improve it.

TimpanogosSlim

Recipes 

For growing yeast starters? Nil.

But solid state stir plates are preferred in potentially explosive and corrosive environments.

Here's mine, next to my DIY stir plate: