qdd100 beta 3 servo

OUT OF STOCK - 2025-04-22

Due to recently instituted tariffs, there is now a MOQ of qty 50 for qdd100s and a 3 month lead time.  Contact info@mjbots.com for information.

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This is the third beta version of the mjbots qdd100 quasi-direct drive brushless servo.

Specifications: 

• Torque, measured at zero speed, ambient 20C lab, 24V input, no airflow or heatsink until limiting occurs
  
• Peak: 16 Nm (< 1s)
• 10 Nm - 60s
• 6 Nm - 400s
• 3.3 Nm - Indefinite
• Peak speed: 3,600 dps @ 36V -- 2,300 dps @ 24V
  
• Backlash: +- 0.25 degrees
• Weight: 507g
• Control rate: 15-30kHz
• Mechanical - 2D CAD drawing - 3D STEP File
  • Outer diameter: 100mm
  • Thickness: 44mm
  • M3 fixed mounting bolt pattern on front and back
  • M3/M4 mounting bolt pattern on output
• Voltage input: 10-44V
• Peak power: 500W
• Communication: 5Mbps CAN-FD
• Power connector: 2x XT-30
• Data connector: 2x JST PH-3
• Open source motor driver and firmware with programming port and CAN bootloader: https://github.com/mjbots/moteus

In addition, it contains 2 copies of the XT30 mating connector for power and the JST-PH3 mating connector for data.

The servo is also available in development kit form.

Accessories:

• Daisy chain CAN-FD wiring: JST PH3 cables / Termination resistors

Documentation: 

• Reference documentation
• tview introduction video

Support / questions: 

• info@mjbots.com
• Discord: https://discord.gg/W4hUpBb

NOTE: This is a BETA product. There will be rough edges, possibly lots of them. The documentation isn’t great / is non-existent, the firmware has not seen wide use, the hardware may be unreliable, and likely has cosmetic blemishes. You’re OK with that, and don’t mind providing feedback on how the servo works and how it could be improved. 

That said, there is still a 1 year warranty for manufacturing defects as for all mjbots products.