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Kitronik is a company of Engineers, Designers, Makers, and Educators from the UK. Since 2005 they have been producing high-quality products for Education and Makers. Specialising in electronic project kits.
The STOP:bit for the BBC micro:bit is the ultimate upgrade for traffic light/pedestrian crossing projects. The STOP:bit has 3 10mm diameter LEDs. Each of these LEDs is driven from one of the BBC micro:bit IO pins.