Adafruit Industries Adafruit Industries CRICKIT for micro:bit
Plug your :bit into the 40 pin edge connector and start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends micro:bit so you can still use all the goodies on the :bit, but now you have a robotics playground as well.
Adafruit Industries CRICKIT for micro:bit
Usually ships in 1-3 business days.