Instructables

Microchip Fridge Magnets

This is a magnet with a chip face (chip on a magnet). I made the actual item in about 5 minutes, the first time. They're really easy to make, for the most part. They overlap the magnet so it looks like they are part of the fridge, as if the fridge were a big circuit board.

Materials ---

Something with a chip on it that you can take apart. I used an old gameport PCI card for a computer. Or if you have some chips laying around, use those, they will look better. If you're taking them off a board, they'll probably get bend up a bit like mine.
A magnet of some kind, obviously. I used an old bendy Domino's Pizza card magnet. It's not that strong, but it works for thin stuff.
Tape, or some other kind of adhesive.

Tools ---

Pliers, or some other tool you can use to break stuff by bending it. Circuit boards can hard to break, depending on the thickness.
Scissors to cut the tape and card magnet.

Also, be sure to check out CameronSS's version. LINK
 
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Step 1: Get Your Chip!

Begin by getting your circuit board with a chip, and snapping the board into pieces to get at your prize. I did this by lining up the pliers with the edge of the chip and bending it as hard as I could to break the board. Be very careful though, and make sure you don't snap the legs off of the chip.

You only need to break off one or two sides of the board around the chip, then it will become loose. Now (carefully!) break off the chip. BE CAREFUL WITH THE LEGS! They bend and break very easily!
KoZuEst7 years ago
what works really well for this kind of a job: a hot air blower and some tweezers. just a few seconds of heating the chip and you can pick it off the board if you're quick. I guess even a butane torch (like the ones used in the kitchen) or even a candle could be used. Just heat the board from the underside with a candle. The chip and many components nearby will probably be rendered nonfunctional, but it won't matter as you wont be using them any more anyway. This makes removing the chips easyer, you'll be less likely to break the IC and the legs will stay intact and straight.
even better i find is a propane torch. if you blast some parts for a few seconds then tap the back you'll quickly depopulate the entire board
propane/butane.. same effect.. I believe they use a mixture of butane+propane in those torches..
oh i thought you meant one of those little jet flame lighters. ya the big torches use sort of a half and half usually in that mp propane stuff but even the cheep straight propane works wonders with those plumbing torches
CameronSS7 years ago
Interesting...We apparently both got two negative ratings. I wonder who hates us?
ll.137 years ago
I use a blowtorch to de-solder the chips, it melt the solder all the way around slip a small screwdriver underneath, works nice. Good idea. Also if you want to remove the legs, because they are so thin just drawing a knife along the edge of the chip will cut them off.
CameronSS7 years ago
I gave you a + rating, but it still says zero. Dunno.
Aeshir (author)  CameronSS7 years ago
Does that for me all the time too. Maybe it just takes a bit.
ewilhelm Aeshir7 years ago
We updated the site last night, and now it updates immediately!
MixMasterM7 years ago
Isn't desoldering SMT stuff fun? ;)

You may also enjoy these home-made microchip fridge magnetshome-made microchip fridge magnets - I've never seen a microchip like them