The Edge Connector Breakout Board for the BBC micro:bit gives access to all of the vital pins on the bottom edge of the BBC micro:bit. A total of 21 pins are broken out; providing supplementary I/O lines, direct access to buttons A and B, the LED matrix outputs and the I2C bus. The BBC micro:bit pins are broken out to a row of pin headers. These provide an easy way of connecting circuits using jumper wires. The SCL and SDA pins are separated at the edge of the board (solder pads) providing easy identification.