User Manual

Brushless Motor Connections and Operation
80 Advanced Digital Motor Controller User Manual V2.0, July 8, 2019
Operating the Controller in RC mode
The controller can be directly connected to an R/C receiver. In this mode, the speed or posi-
tion information is contained in pulses whose width varies proportionally with the joysticks’
positions. The controller mode is compatible with all popular brands of RC transmitters.
The RC mode provides the simplest method for remotely controlling a robotic vehicle: little
else is required other than connecting the controller to the RC receiver and powering it On.
Set
R
eset
FIGURE 6-2. R/C radio control mode
The speed or position information is communicated to the controller by the width of a
pulse from the RC receiver: a pulse width of 1.0 millisecond indicates the minimum joy-
stick position and 2.0 milliseconds indicates the maximum joystick position. When the
joystick is in the center position, the pulse should be 1.5ms.
1.05ms
min center maxjoystick position:
R/C pulse timing:
0.45ms
0.9ms
FIGURE 6-3. Joystick position vs. pulse duration default values
The controller has a very accurate pulse capture input and is capable of detecting
changes in joystick position (and therefore pulse width) as small as 0.1%. This res-
olution is superior to the one usually found in most low cost RC transmitters. The
controller will therefore be able to take advantage of the better precision and better