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A handy Light in a pen activated by a magnet. Easy project
What you need: - drill - electrical tape - 3/16 in drill bit - LED about 2.7v - expo marker - exacto knife - reed switch - soldering ...
Carefully cut the edges of the 9v battery off to reveal 6 AAAA batteries. Cut two off from the group and be sure that they are connected by ...
Solder the negative end of the battery pack to the reed switch with the red wire .The positive end has a piece of metal left on it from ...
use a sharpie and color a wire black (about 3 in) and leave another red. solder one black end to the reed switch (+) and the other end ...
Insert pack as far back as you can with a pencil. Drill a hole in the end plug so that you can fit the LED through it. Leave ...
Now that you are finished try it out by putting a magnet by the marker and the LED will, if you did it properly, turn on.Of course there ...
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