Interchanging between Armourbit and Robotbit
KOI supports both Robotbit and Armourbit, the only difference is in the initialization.
Load KOI Extension: https://github.com/KittenBot/pxt-koi
For Armourbit users, choose “init powerbirck port”.
For Robobit users, choose “init Tx Rx”
There are no difference between the 2 coding wise.