LDK Experiment 5: Make Your Own Switch
Beginning with a new thread, sew down the negative pin of the LED.
From here, sew a trace back to the negative pins of the battery pack and stitch those down as well.
That’s it! Slide your battery into the battery holder, positive side up, and turn on the switch on the battery pack. Try snapping and unsnapping your felt switch a few times. When it’s snapped, the light will turn on, unsnapped, it will turn off!