Elecfreaks Tinker Kit is sourced from Singapore training organization TINKER CADEMY which has a professional team and a strong academic background. A variety of octopus sensors and lots of project tutorials to help you create dozens of amazing digital maker projects!

ELECFREAKS Octopus:bit is a kind of breakout boards for micro:bit. It can lead out GPIO port, serial port, IIC port, and SPI port on the micro:bit board. The biggest feature of Octopus:bit is that it can switch electric level for some GPIO ports, which makes micro:bit available to be adapted to 5V sensors.

Tutorial :https://www.elecfreaks.com/learn-en/microbitKit/Tinker_Kit/index.html