The purpose of the app is to control remote hardware like Arduino, Netduino, Raspberry Pi ... Only the Bluetooth SPP Profile (RFCOMM) is supported. A previous Bluetooth Pairing is required.
The first optional information is a channel, which has the range from 0 to 3.
Afterwards 2 positions are handled as bytes and are almost terminated with a zero byte.
The range of the positions (power) is between -100 and 100.
UP: [channel], 0, power, 0
DOWN: [channel], 0, -power, 0
LEFT: [channel], -power, power, 0
RIGHT: [channel], power, power, 0
MIDDLE: [channel], 0, 0, 0 or [channel], 0, 0, power (Sense)
Reverse: Power * -1
Sense: Automatic return to zero values on release -> [channel], 0, 0, 0
The MIDDLE Button has a special handling -> [channel], 0, 0, power
Channel: Enable optional channel
Power: Slider from 0 to 100
