The new controller features 5 I2C sockets for your peripherals, a stronger USB-B socket for durability, and peripheral flashing mode – no need for FTDI232 USB-UART board any more!
Just plug your device into 1st socket of the master, flip the mode switch to “P”, press the reset button (“R”), and flash it! Flip back to “F” to fly or update the master software.
The device is still stackable if you want some insane number of peripherals, the v2b version will be the regular one without flashing capability, meant for use as secondary controllers.
Look for the assembly/operating manual in the wiki!