HopeJR Arm (with Homunculus teleop) vs Open Duck Mini v2
Cost, parts and difficulty side by side.
| HopeJR Arm (with Homunculus teleop) | Open Duck Mini v2 | |
|---|---|---|
| Cost | $650 to $1,100 | $360 to $470 |
| Difficulty | advanced | intermediate |
| Parts | 37 | 21 |
| 3D printing | yes | yes |
| Kits available | 0 | 0 |
| Made by | TheRobotStudio and Hugging Face | Antoine Pirrone and contributors (sponsored by Hugging Face and Pollen Robotics) |
| Full list | HopeJR Arm (with Homunculus teleop) parts list | Open Duck Mini v2 parts list |
HopeJR Arm (with Homunculus teleop)
Human-scale arm with a tendon-driven dexterous hand, plus a hall-sensor exoskeleton and glove for one-to-one teleoperation in LeRobot.
Open Duck Mini v2
A 42 cm 3D printed biped inspired by Disney's BDX droid, walking with reinforcement learning policies on a Pi Zero 2W.
The short answer
Open Duck Mini v2 costs less to start: about $360 against $650 in parts. Open Duck Mini v2 has the shorter parts list (21 lines against 37).
Motors and servos
HopeJR Arm
- 16 x Feetech SCS0009
- 2 x Feetech STS3250
- 4 x Feetech STS3215 12V
- 1 x Feetech SM8512BL
Open Duck Mini v2
- 14 x Feetech STS3215 7.4V, 19 kg.cm (C001, 1/345 gear)
- 2 x 9g micro servo