and they also put together a quick tutorial showing how you can construct your own coin cell-powered LED tie. We’re not suggesting that anyone rush out and buy their kit, as it can be replicated ...

[Bill] has been working with a gaggle of 8th graders this summer at a STEM camp, impressing them with his geeky attire such as an 8-bit and PCB ties, and an LED illuminated lab coat. The ...