This is the beta kit for the mjbots qdd100 quasi-direct drive brushless servo (also available for purchase separately).
Specifications:
- Torque, measured at zero speed in ambient 20C lab with no airflow or heatsink until limiting occurs
- Peak: 16 Nm (< 1s)
- 10 Nm - 30s
- 6 Nm - 300s
- 2.5 Nm - Indefinite
- Peak speed: 3,700 dps @ 36V -- 2,500 dps @ 24V
- Backlash: +- 0.1 degrees
- Weight: 475g
- Control rate: 40kHz
- Mechanical - CAD drawing
- Outer diameter: 100mm
- M3 fixed mounting bolt pattern on front and back
- M3 mounting bolt pattern on output with M4 dowels
- 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
- fdcanusb USB to CAN-FD adapter
- DB-9 to JST PH-3 cable for CAN communication
- 24V power supply with XT30 connector
- Spare XT30 and JST PH-3 connectors
- Brackets and bolts for mounting to a table and a demonstration output "horn" with hole for 1 inch tube
- USB STM32 programmer w/ moteus JST-ZH6 connector
Documentation:
Support / questions: 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, and the hardware may be unreliable. You’re OK with that, and don’t mind providing feedback on how the servo works and how it could be improved. Legally, this beta product is provided AS-IS, without any express or implied warranties, including but not limited to warranties of merchantibility, fitness for a particular purpose and non-infringement.