[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 adolescent tinkerers asked him what he would be wearing on the last day. Not wanting to let the kids down, he whipped up an LED Tetris tie in an evening.
The Tetris board is a 20 x 4 grid of WS2811 based RGB LED strips, controlled by a Digispark dev board. Structurally, the tie is just two bits of card stock with the electronic bits sandwiched in between. and taped to a cheap clip-on. In the video below, the tie doesn’t have any sort of input to control the movement and rotation of blocks. [Bill] plans to update his tie with some rudimentary AI so it can play itself.
All the code is over on [Bill]’s git. It’s still a work in progress, but from the STEM student’s reaction, there’s a lot of potential in this tie.