Part comparison

mjbots qdd100 beta 3 vs Unitree A1 joint motor

A side-by-side comparison of source-backed specifications within the same subcategory.

11 shared specs1 scored

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mjbotsmjbots qdd100 beta 3qdd100 beta 3

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Unitree RoboticsUnitree A1 joint motorA1 joint motor

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Directional spec summary

Counts across 1 numeric specifications with a clear higher-or-lower direction.

Part A leads

Tied

Part B leads

These are metric-by-metric differences, not an overall performance score. Check the values below.

Specifications

10 specifications compared side by side.

mjbots qdd100 beta 3 / Unitree A1 joint motor
Compare bySpecification	Amjbotsmjbots qdd100 beta 3	BUnitree RoboticsUnitree A1 joint motor
Performance1
Peak torque	16 Nm	33.5 Nm17.5 Nm higher
Mechanical & integration7
Motor kind	QDD actuator	QDD actuator
Drive principle	BLDC/PMSM	BLDC/PMSM
Architecture	Integrated motor reducer driver	Integrated motor reducer driver
Gear typeUse-dependent	Direct or low ratio	planetary
QDD	Yes	Yes
Backdrivable	Yes	Yes
Integrated driver	Yes	Yes
Control & communication2
Communication interfacesUse-dependent	CAN	RS485
Control modes	position;velocity;torque	position;velocity;torque

Amjbotsmjbots qdd100 beta 3

BUnitree RoboticsUnitree A1 joint motor

Performance1

Peak torque

Part A16 Nm

Part B33.5 Nm17.5 Nm higher

Mechanical & integration7

Motor kind

Part AQDD actuator

Part BQDD actuator

Drive principle

Part ABLDC/PMSM

Part BBLDC/PMSM

Architecture

Part AIntegrated motor reducer driver

Part BIntegrated motor reducer driver

Gear typeUse-dependent

Part ADirect or low ratio

Part Bplanetary

QDD

Part AYes

Part BYes

Backdrivable

Part AYes

Part BYes

Integrated driver

Part AYes

Part BYes

Control & communication2

Communication interfacesUse-dependent

Part ACAN

Part BRS485

Control modes

Part Aposition;velocity;torque

Part Bposition;velocity;torque

Product sources

Product sources used by this comparison

mjbots qdd100 beta 3Open source ↗

Unitree A1 joint motorOpen source ↗