Making an electronic puzzle as a birthday present for a friend who is not on [H]
I have a "reed switch" (I use that term loosely, it's not even encapsulated) from a Dollar Tree window alarm. I can trigger it if I get a hard drive voice-coil magnet real real close -- but I need to trigger it through a piece of cheap wood (I suspect it's balsa) about 3/8" thick...
How do I do that, on the super-cheap and without ordering from China?
I have a "reed switch" (I use that term loosely, it's not even encapsulated) from a Dollar Tree window alarm. I can trigger it if I get a hard drive voice-coil magnet real real close -- but I need to trigger it through a piece of cheap wood (I suspect it's balsa) about 3/8" thick...
How do I do that, on the super-cheap and without ordering from China?