PROJECTS: Squishy Tech
use heat-shrink tubing or electrical tape to stop
it from shorting. You can use hot glue to glue the
board to the battery, or you can build another
enclosure to hold it all together. I wrapped the
board and battery in vinyl tape to make sure there
were no shorts (Figure
O
).
3. TEST AND TROUBLESHOOT
You can test your circuit by plugging in the 9V
battery and placing a small inductive LED inside
the center of the coil (Figure
P
). You’ll notice that
as you rotate and move the LED, it might fade or
turn off. You can get a feel for how the fields of
the coils intersect. Try flipping your LED and coil
backward as well!
the string to make a necklace with the coil as a
pendant. You can make it a choker, or a longer
pendant depending on what you like! I added an
existing pendant to make it fit my style a bit more;
if you want a bit more inspiration, try modifying
some jewelry you don’t wear enough.
Once you’re happy with your necklace, solder
the other ends of the newly added wires back to
the transmitter board. I also used some copper
wire to wrap around the outside of the bundle
of wires, just to hide the mess of the solder
connections (Figure
N
).
2. POWER THE COIL
Solder the 9V battery clip onto the red and black
wires of the transmitter board. Remember to
N
P
O
Q
Lee Wilkins
76 makezine.com
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