======================RADIO_CONTROLLED============================================ RC servo controlling RC Servo motors have built in motor, gearbox, position feedback mechanism and controlling electronics. controlled using simple pulse controlling. 3 wire interface for control and power supply. wires are colored using following color code: BLACK Ground WHITE Control pin RED +4.8V power supply (+5V works well in this) pulse is positive going pulse with length of 1 to 2 ms which is repeated about 50-60 times a second. : ____ ____ _+4.8V | | | | | | | | ____| |_____________________________| |____ _GND |<-->| 1..2 ms |<-------------------------------->| 18-25 ms 1 ms pulses sets servo to one end position sending 2 ms pulses sets it to other end position. Sending 1.5 ms pulse sets servo motor to center position INPUT DATA ___ ___ ___ ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___ ___ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| |_| | |_|||||_|||||_|||||_|||||_||__||__||__||__||__||__||__||__||__||__||__||__||__||__||__||__|||||_|||||_ | ||||| ||||| ||||| ||||| || || || || || || || || || || || || || || || || ||||| ||||| <----------------------><---------------------------------------------------------------><----- 4 PULSE 27.9MHZ PULSE 27.9MHZ AT 2.1 MS LONG AT 700US LONG NEXT AND 700US SPACING AND 700US SPACING RADIO_CONTROL Each sequence contains a short group of synchronization pulses, followed by the pulse sequence. synchronization segment - alerts receiver to incoming information is four pulses that are 2.1 milliseconds , with 700-microsecond intervals. pulse segment uses 700-microsecond pulses with 700-microsecond intervals. * Forward: 16 pulses * Reverse: 40 pulses * Forward/Left: 28 pulses * Forward/Right: 34 pulses * Reverse/Left: 52 pulses * Reverse/Right: 46 pulses