A4WD3 Mecanum

Last modified by Eric Nantel on 2023/11/03 07:05


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The Lynxmotion A4WD3 Mecanum Rover is a general purpose mobile robotic platform intended to be used in RC control or microcontroller-based for autonomous or semi-autonomous use. Each wheel is controlled independently to allow the robot to move in any 2D direction (i.e. omnidirectional drive). The wheels are large enough to be able to travel over bumps and obstacles, but the system is most suitable for flat surfaces, and it is best to avoid debris falling between the rollers. 

More about Mecanum here: https://en.wikipedia.org/wiki/Mecanum_wheel

The machined aluminum frame integrates rotary seals around each motor shaft, and solid rubber cord between the frame and all panel openings, making it dust and water resistant. A large marine inspection hatch on the top panel provides easy access to internal parts as well as being able to quickly swap or recharge batteries. Aside from the internal electronics mounting plate, the platform is symmetric and can be inverted.

The rover includes four powerful 12V DC motors coupled to 51:1 all metal planetary gears. The rear shaft of each motor is equipped with a magnetic encoder which provides 12 pulses per revolution (PPR). These motors provide 4WD and allow the 4WD variation to reach a top speed of around 3m/s (120”/s) without payload. Unlike the 4WD and tracked variations of the A4WD3, the Mecanum rover requires two dual channel motor controllers.

Front and rear access panels are made of G10 composite and are intended to allow users to machine openings to add their own components, which may include a wired tether for power and control, LED or LCD feedback, a handle, or whatever else their application may need. Included are a pair of transparent polycarbonate panels which allow for an internally mounted camera and/or or LED lights for increased visibility. Additional panels are available separately.


  • 4x planetary geared DC motors (12V) with rear encoders
  • 1x Set of four Mecanum wheels, hubs and adapters
  • Machined aluminum frame with G10 composite plates
  • Shaft seals & solid rubber cord for water and dust resistance
  • Internal mounting plate for electronics & battery


A4WD3 Mecanum

  • Max speed: ~1.4m/s (55in/s)
  • Weight: 5.55kg (12.23lbs)
  • Rating: Water and dust resistant
  • Chassis: Aluminum frame & G10 (fiberglass) Pannels
  • Wheels: 152mm diameter mecanum wheels, rubber rollers


  • Output Shaft: D-Shape 8mm
  • Operating Voltage: 12VDC
  • Gears: Metal planetary gear
  • Unload Speed: 170RPM (±10%)
  • Loaded Speed: 145RPM (±10%)
  • Torque: 11.5kg.cm (9.98lb.in)
  • Gear Ratio: 51:1
  • Current: ≤3A


  • Operating Voltage: 5V
  • Signal: Square wave AB 90 deg,
  • Pulse: 12 PPR
  • Frequency: 800kHz


  • Length: 372mm / 14.646"
  • Width: 374.5mm / 14.774"
  • Height: 152mm / 5.984"
  • Ground clearance: 38.5mm / 1.516"

User Guide


CAD Files

What's Included

Base Kit

 Rover RobotsScrews 
 1x A4WD3-KT8x CPS-034x SHS-198x SHS-1712x M5x55-SH 
 Frame Only10mm x M3 Setscrew12mm x M1210mm x M3M5 x 55mm 

 WashersTubing & HubsWheels 
 4x LW-014x A4WD3-WH4x A4WD3-WA2x A4WD3-W-ME-A2x A4WD3-W-ME-B 
 M12 Lock Washer8mm to 17mm Hex Hub17mm Wheel AdapterMecanum AMecanum B 

 Hex Keys     
 1x HEX-1.5mm1x HEX-4mm1x HEX-10mm   
 Hex Key 1.5mmHex Key 4mmHex Key 10mm   


Autonomous Kit

 WiringModulesMot. ControllersBatteries
 1x WH-XT60-XT30-013x SC-011x SEA-011x BBU-012x Sabertooth1x SL-LP-08
 Power HarnessServo Cable 12"Servo Extension Cable 6"BotBoarduino Microcontroller2x12A Standard4000mAh 3s LiPo Battery

 1x B3AC1x USBC-02    
 LiPo ChargerUSB Mini Cable    

Created by Eric Nantel on 2021/07/28 07:39
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