Motor Driver MKII

The MkII motor driver board is an improved version over the previous design it is still only for small motors however it is much more robust.

 

Click on image for larger view.

 

 ZiBOT's Motor Driver Board MkII.

Features:

  • Dual Motor Drives
  • Separate 6V supply for motors
  • Max voltage 36V for motors
  • Max current 0.6A per channel
  • Max peak current 1.2A per channel
  • Max power dissipation is 4W
  • TTL Levels for motor control
  • Thermal overload protection
The motor controller board is designed to plug into the mainboard.  It utilises a L293D chip that has 2 motor drivers and requires a separate 6 volt supply for the motors though the control input levels are TTL.

Control input Truth Table:

ML1/MR1 ML2/MR2 Motor Direction
0 0 Stop
0 1 Reverse
1 0 Forward
1 1 Stop

Max current is 0.6A and max peak current is 1.2A
Max power dissipation is 4W.
The motor driver has max voltage of 36V and thermal shutdown protection.
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Motor Board MkII component layout

Board size 50mm x 30mm

 

 

 Prototype PCB Top (with mods)

 

 Prototype PCB Bottom (with mods)
 

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