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This page collects OpenNeck's mechanical resources, sourcing list, fasteners, and 3D-printing files.
- 3D-printing files: print-ready STL models and editable STEP models.
- Simulation models: standalone URDF and MuJoCo models with their shared meshes.
- Mechanical Assembly: concise installation steps with diagrams.
The quantities below build one complete 2-DoF OpenNeck. Only mainland China sourcing links are currently listed. Prices are reference prices in RMB and may change with the supplier and selected specifications.
Print one copy of each 3D-printed part; printing costs are not included in the subtotal below.
| Part | Quantity | Unit Price (RMB) | Buy in Mainland China |
|---|---|---|---|
Feetech ST-3032-C062 servo, 12 V |
2 | ¥188.00 | Taobao |
Feetech FE-URT2-C001 servo control board |
1 | ¥40.00 | Taobao |
| XT30 male pigtail, 18 AWG, 20 cm | 2 | ¥4.58 | Taobao |
| DC 5.5 × 2.1 mm barrel jack to screw-terminal adapter | 2 | ¥2.33 | Taobao |
| 12 V 2 A power adapter | 1 | ¥10.50 | Taobao |
| 12 V 2.5 A / 3 A resettable fuse | 2 | ¥0.18 | Taobao |
| Two-core wire | 1 | ¥4.99 | Taobao |
Intel RealSense D415 depth camera |
1 | — | — |
| USB Type-C data cable | 1 | ¥21.00 | JD |
| Heat-shrink tubing | 1 | ¥3.80 | Taobao |
| Cable ties | 1 | ¥2.02 | Taobao |
| Dupont jumper wires | 1 | ¥3.66 | Taobao |
| Known subtotal (excluding D415 and 3D printing) | — | ¥476.15 | — |
The servos include two servo horns and one adapter board. Confirm that all accessories are included before ordering.
| Fastener | Quantity | Purpose |
|---|---|---|
GB/T 845-1985 ST2.2 × 4.5 C-H self-tapping screw |
12 | Secure both servos and the adapter board |
GB/T 818-2000 M6 × 8 screw |
1 | Secure the RealSense D415 |
GB/T 818-2000 M3 × 6 screw |
2 | Secure the camera mount |
GB/T 818-2000 M3 × 12 screw |
2 | Secure the servo control board |
GB/T 6174-2000 M3 thin hex nut |
2 | Use with the M3 × 12 screws |
Each printable part is provided in STL and STEP formats:
| Part | STL | STEP |
|---|---|---|
| Base mount | base_mount.stl | base_mount.step |
| Pitch mount | pitch_mount.stl | pitch_mount.step |
| Camera mount | camera_mount.stl | camera_mount.step |
| Passive pitch pivot | pitch_pivot.stl | pitch_pivot.step |
Use the STL files for slicing and printing. Use the STEP files to inspect dimensions or mounting features, or to modify the structure. Print one copy of each part.