Open Source Robotic Manipulators

Name & Link	Image	Mechanical Structure	DOF	Reach (mm)	Payload (kg)	Repeatability (mm)	Weight (kg)	CNC Machining	Motor Type	Price	Kit Availability	Extra Features/Notes
Standard Open Arm 101		Plastic, 3D Printed	5	n/a	n/a	n/a	n/a	No	Servo	€ 128 parts + 3D printing (€ 244 teleoperation set)	No	Comes with teleoperation leader arm. Ready for LeRobot
Thor		Plastic, 3D Printed	6	625	0.75	n/a	n/a	No	Stepper	€ 350 parts	No	-
Arctos		Plastic, 3D Printed	6	600	0.5	n/a	n/a	No	Stepper	$ 433 hardware + $ 360 3D parts	Yes	-
OpenManipulator-X		Aluminum	4	380	0.5	< 0.2	0.7	Yes	Servo	$ 1,417 assembled	No	-
AR4		Aluminum	6	629	1.9	0.2	12.25	Yes	Stepper	$ 1,189 combo + $ 730 motors + 3D printing	Yes	-
PAROL6		Plastic, 3D Printed	6	400	1	0.2	5.5	No	Stepper	€ 2,418 combo + 3D printing	Yes	€ 265 PAROL6 control board required
TRLC-DK1		Aluminum	6	750	1.5	n/a	n/a	Yes	BLDC	€ ~2,500 assembled	Yes	comes with teleoperation leader arm
OpenArm		Aluminum, Steel	7	633	6	n/a	5.5	Yes	BLDC	$ 6,500 for the bimanual setup	n/a but announced	-

Discovered projects that were not included:

• BCN3D MOVEO
• Source Robotics FAZE4
• Low-Cost Robot Arm
• Low-Cost Robot Arm: Koch v1.1
• RoArm