Product User’s Manual –
8.1 RC INPUT MODE
In RC input mode, the speed and direction of the motor is controlled by the signal from the
standard hobby radio control transmitter and receiver, or a microcontroller generating the
similar signal.
NOTE:
The RC transmitter must be turn on before power up the SmartDrive40.
RC Input mode is selected by setting all the
SW1 – SW4
to
0 (Down)
. SW5 – SW8 can be
configured depending on the requirement of the user.
Input Mode
SW1:SW4
0000
RC Input Mode
Single/Mix Mode
SW5:SW6
0X
10
11
Single Channel Mode
– The motor speed and direction are controlled
by a single RC channel connected to Input 1. Motor stops when the
input signal is at the center point. Input 2 is not used in this mode.
Left Mix Mode*
– This mode should be selected for the left motor of
the robot differential drive system. Input 1 controls the overall speed as
well as forward/backward movement of the robot. Input 2 controls the
left/right or pivot movement of the robot. In left mix mode, the motor
will be slowed down when the robot is commanded to turn left and vice
versa.
Right Mix Mode*
– This mode should be selected for the right motor
of the robot differential drive system. Input 1 controls the overall speed
as well as forward/backward movement of the robot. Input 2 controls
the left/right or pivot movement of the robot. In right mix mode, the
motor will be slowed down when the robot is commanded to turn right
and vice versa.
Exponential Mode
SW7
0
1
Off
– The speed is linear with the input signal. This is for low to
medium speed motor.
On
–The response to input is exponential and this soften the control
around the center zero speed point. This is suitable for high speed and
very sensitive motor.
MCU Mode
SW8
0
1
Off
– The center point will be calibrated upon power up. Timeout
occurs after lost of signal for 100ms and the motor will be stopped for
safety purpose.
On
– The center point is fixed at 1.5ms and the timeout feature is
disabled. Motor will continue to run with previous speed if new signal
is not detected. This is useful when a microcontroller is used to control
the motor. The microcontroller does not need to send the pulse
continuously to the SmartDrive40. Instead, it only needs to send a
single pulse when the speed or direction of the motor needs to be
changed.
0 – OFF
1 – ON
X – Don’t Care
* Left/Right is just for reference only. Actual side of the motor may depends on the RC transmitter.
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