Tendon Network Anthropomorphic Wrist Variant 15
Tendon Network Anthropomorphic Wrist Variant 15: Build a 4DOF Tendon-Driven Anthropomorphic Wrist
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit empowers you to construct a fully articulated robotic wrist that moves just like a human hand's wrist joint, with tendon networks and real-time force feedback. Ideal for advanced robotics research, prosthetics prototyping, or motion control projects, you’ll assemble a 3D-printed wrist frame, string eight antagonistic tendons, and integrate force-sensing resistors and magnetic encoders for precise closed-loop control.
What You'll Build
You will assemble a 3D-printed wrist frame, string the tendon network using fishing line, connect the MG90S servos to the PCA9685 driver, and wire up force-sensing resistors and magnetic encoders. The finished wrist achieves independent control of flexion, extension, radial deviation, and ulnar deviation under Arduino Mega control, with closed-loop force and position feedback.
What You'll Learn
- Design and implement antagonistic tendon-driven actuation for multi-DOF joints.
- Interface FSR402 force sensors and calibrate for real-time force control.
- Use AS5600 magnetic encoders with Arduino for precise joint angle measurement.
- Coordinate 4 servos via PCA9685 PWM driver for smooth, simultaneous motion.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| PCA9685 Driver | 1 |
| MG90S Servo | 4 |
| FSR 402 | 4 |
| AS5600 Encoder | 2 |
| 5V 3A PSU | 1 |
| 100nF Caps | 10 |
| 4.7kΩ Resistors | 5 |
| PCB Prototype Board | 3 |
| Fishing Line 0.3mm 10m | 1 |
| 3D Printed Wrist Frame | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is purpose-built for advanced robotics enthusiasts, B.Tech/M.Tech students in ECE/EEE, researchers working on prosthetics or tendon-driven mechanisms, and participants in Smart India Hackathon building dexterous manipulators. If you are pursuing a capstone project at IIT, NIT, VIT, BITS, or contributing to ATL Tinkering Labs at an advanced level, this wrist system gives you a head-start on compliant actuator research.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
Can I use this wrist in a prosthetic hand prototype?
Yes, the tendon-driven design and force feedback make it well-suited for anthropomorphic prosthetics research. The AI companion can guide you on scale and integration.
Do I need a 3D printer to build the wrist?
No, the kit includes a pre-printed wrist frame. You only need basic tools, and the soldering iron is provided.
Is the fishing line durable enough for repeated motion?
Yes, 0.3mm diameter braided fishing line provides high tensile strength and low stretch, suitable for continuous tendon cycles. Spare line included for replacements.
Can I replace the MG90S servos with stronger ones?
The frame is designed for micro servos like MG90S. For higher torque, you may need to modify mounting. The AI companion offers suggestions for customizations.
4DOF wrist with 8 tendons driven by 4 servos achieves flexion, extension, radial and ulnar deviation.
What's in this kit
- Arduino Mega 2560
- PCA9685 Driver
- MG90S Servo x4
- FSR 402 x4
- AS5600 Encoder x2
- 5V 3A PSU
- 100nF Caps x10
- 4.7kΩ Resistors x5
- PCB Prototype Board x3
- Fishing Line 0.3mm 10m
- 3D Printed Wrist Frame
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items