Found this very affordable headtracker.
Power: 8V to 12V DC power supply. Some
transmitters, especially those FUTABA ones, can supply power directly by trainer
connector. (ex. T9Z, FF9C). Some transmitters cannot supply power to X-GYRO, for
example 14MZ and 12FG. The simplest solution is to use an extra battery for those RC transmitters. The connector is already included in package.
Range for measuring: +-90 degree/second rotational speed movement.
Channels: X axis- channel 7 Y axis-channel 8
Detective range G45 degree
Choice for transmitters;
FUTABA: (FF-7, FF-8, FF-9, T9Z, T12MZ, T14MZ)
Graupner: (MC20, MC24, MX22)
Multiplex transmitter: (Royal Evo, Cockpit SX, mc4000)
JR and other transmitters without programmable channel: (9303, 9X)