I just bought three BL-Ctrl V1.2 High Speed (I2C) interfaceable Electronic Speed Controller (ESC's) for TriRot. This is by far the most expensive set of parts I have bought to date and almost 40 euro's each. These are shipping in from Germany. Hopefully the 20 Euro shipping charg means that it doesn;t take another month to arrive.
Once I have these bits, I should be able to get TriRot to lift-off, although it would still be tethered via USB, since I have still not bought the transmitter or the receiver.