
PROJECTS: Wireless LED Kaleidoscope
only slightly or not at all.
Once you’re certain the electronics work
properly, unplug the USB cable from the power
source and set the transmitting coil to one side
while you attach the LED compartment to the
kaleidoscope in the next step.
6. ASSEMBLE THE LED COMPARTMENT
The powered LEDs will shine brightest when
facing directly upward into the kaleidoscope, so
we’ll place them inside tiny clear acrylic “collars”
that maintain their orientation as they slide
around (Figure
S
). Be sure that you’ve removed
any protective paper from the acrylic rings before
carefully slipping the LEDs into them. The LEDs
should ...