- Jun 24, 2001
- 24,195
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What type of measurement is used to measure magnetic strength?
What is the name of a tool which can do this?
Where can I find a tiny electromagnetic component for an electronics project which can match the measurement taken from a natural magnet?
If anyone cares...
Basically, I'm trying to "clone" magnetic "keys." In an original key, an arrangement of small magnets is inserted permanently into a plastic block. The block has 9 holes. The presence or absence of a magnet in each hole, as well as the polarity, is used to create unique "keys" which a hand-held device "reads."
I managed to create clones of these keys by drilling holes in a block of wood and arranging natural magnets of similar strength in the holes. My current gadget is simply a block with holes matching the keys, a mechanism using wooden pegs which have magnets on one side, and a rubber strip running through each peg (Criss-crossed and held in with a dowel depressing the middle). I did have magnets arranged in opposite polarities on both sides of the pegs, but the keys I need to clone happen to have all magnets the same polarity. It works. I simply flip the pegs to match the key I wish to clone and it works. But I have a major problem: The magnets and the pegs they are attached to are very small. Super glue is the only thing I can use and still have them fit through the holes, however it is not strong enough. The magnets are easily lost and broken off. I've used up all my spares and I can no longer find identical replacements.
I think it's time for a solid-state electronic gadget
What is the name of a tool which can do this?
Where can I find a tiny electromagnetic component for an electronics project which can match the measurement taken from a natural magnet?
If anyone cares...
Basically, I'm trying to "clone" magnetic "keys." In an original key, an arrangement of small magnets is inserted permanently into a plastic block. The block has 9 holes. The presence or absence of a magnet in each hole, as well as the polarity, is used to create unique "keys" which a hand-held device "reads."
I managed to create clones of these keys by drilling holes in a block of wood and arranging natural magnets of similar strength in the holes. My current gadget is simply a block with holes matching the keys, a mechanism using wooden pegs which have magnets on one side, and a rubber strip running through each peg (Criss-crossed and held in with a dowel depressing the middle). I did have magnets arranged in opposite polarities on both sides of the pegs, but the keys I need to clone happen to have all magnets the same polarity. It works. I simply flip the pegs to match the key I wish to clone and it works. But I have a major problem: The magnets and the pegs they are attached to are very small. Super glue is the only thing I can use and still have them fit through the holes, however it is not strong enough. The magnets are easily lost and broken off. I've used up all my spares and I can no longer find identical replacements.
I think it's time for a solid-state electronic gadget
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