Tendon Driven Wrist Mechanism Kit with Arduino Uno + Servo
Build a Smooth Tendon-Driven Robotic Wrist with Arduino Servo Control
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine building a robotic wrist that bends smoothly with real-time position feedback — just like the tendons in your hand. This kit uses two MG90S servos to pull opposing tendons, flexing and extending the wrist through 90 degrees with an AS5600 magnetic encoder for closed-loop control. Perfect for students building mechatronics projects, robotics club prototypes, or Smart India Hackathon submissions.
What You'll Build
You'll assemble a fully working tendon-driven wrist mechanism that you can command via Arduino code. The wrist will flex and extend smoothly, with its position displayed on the OLED screen in real time. You'll also learn to tune servo gains and read encoder data for precision movement, creating a responsive robotic joint ready for advanced hand projects.
What You'll Learn
- Tendon-driven mechanism design and routing
- Servo motor programming and calibration
- Closed-loop motion control with encoder feedback
- Interfacing OLED display for real-time angle monitoring
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| MG90S Servo | 2 |
| AS5600 Encoder | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistor | 5 |
| 100nF Capacitor | 5 |
| 5V 2A PSU | 1 |
| Fishing Line 0.5mm | 1 |
| PCB Prototype Board | 1 |
| M-F Wires | 15 |
| 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 ideal for CBSE Class 11-12 students taking engineering graphics or computer science electives, B.Tech ECE/EEE undergraduates building motion control projects, and participants in Smart India Hackathon or ATL Tinkering Lab challenges. It's also a great fit for IIT, NIT, VIT, or BITS students exploring robotics and mechatronics.
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.
What if I get stuck during the build?
Use the AI companion for instant, context-aware guidance. If you need more help, our team is available on WhatsApp to troubleshoot in real time.
Do I need prior soldering experience?
Basic soldering is required but easy to learn. The kit includes a soldering iron and solder wire, and the AI companion shows exactly where to solder, making it beginner-friendly.
Can I use this wrist for a full robotic hand?
Yes, the mechanism can be replicated for each finger to build a complete tendon-driven hand. The principles you learn here scale to multi-finger designs.
What coding knowledge is needed?
You'll write simple Arduino code. The AI companion provides example sketches and explains each line, so even beginners with basic C++ can follow along easily.
Two servo motors pull opposing tendons to flex and extend a robotic wrist with 90 degree range.
What's in this kit
- Arduino Uno R3
- MG90S Servo x2
- AS5600 Encoder
- 0.96in OLED
- 4.7kΩ Resistors x5
- 100nF Caps x5
- 5V 2A PSU
- Fishing Line 0.5mm
- PCB Prototype Board
- M-F Wires x15
- 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.
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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