The 4tronix Really Useless Box for micro:bit – a quick review by Michael Horne • 16 May 2020 • 0 Comments Hi everyone. I’ve just returned from my shed where I’ve been putting together the 4tronix Really Useless Box. This is a kit for the micro:bit made out of 7 PCBs, a nice switch and has a servo which tells you… Read more →