Data Sheet

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ROBOT.HEADtoTOE
ProductUser’sManual–MDS40B
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8.1RCINPUTMODE
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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.
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NOTE:TheRCtransmittermustbeONbeforepoweruptheEnhancedSmartDrive40.
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RC Input mode is selected by setting the SW1 & SW2 to 0 (Down). SW3 – SW6 can be                  
configureddependingontherequirementoftheuser.
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InputMode
SW1:SW2
00
RCInputMode
Single/MixMode
SW3:SW4
00
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10
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11
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Independent – 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.
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Mixed Right – 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.
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Mixed Left – 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.
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ExponentialMode
SW5
0
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1
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Off – The speed is linear with the input signal. This is for low to              
mediumspeedmotor.
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On –The response to input is exponential and thus soften the control           
around the center zero speed point. This is suitable for high speed and            
verysensitivemotor.
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MCUMode
SW6
0
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1
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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.
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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 Enhanced SmartDrive40. Instead, it only needs to         
send a single pulse when the speed or direction of the motor needs to             
bechanged.
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0–OFF 1–ON X–Don’tCare
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CreatedbyCytronTechnologiesSdn.Bhd.–AllRightsReserved 14
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