Kids handheld sensor array

thingiverse

This nifty gadget truly puts your soldering skills to the test. A blast for kids, for sure! Mine spends its time wildly flipping the switches. It's become a treasure hunter, campsite explorer, dog repellent, and just about anything it can dream up. I thoroughly enjoyed building it with my own two hands. Make certain you incorporate those resistors into your wiring - trust me, you'll want to! The LEDs are extremely bright, after all.