Continuum Soft Robot Finger Kit with Arduino Uno + Servo
Construct a Tendon-Driven Soft Robot Finger with Arduino Uno and Real-Time Visual Feedback
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 lets you move beyond rigid-link robots into the world of compliance and bio-inspiration. You mould a silicone finger, route three fishing-line tendons through it, and pull them with individual servos to produce bending, twisting, and extension. An OV2640 camera observes the finger and you implement a visual feedback loop to estimate its 3D pose—closing the loop between soft actuation and perception, exactly as modern surgical and industrial manipulators do.
What You'll Build
A continuum finger that deforms continuously along its length, controlled by tension in three longitudinal tendons. Color markers on the tip are tracked by the camera, and your Arduino code calculates servo commands to achieve a desired curvature. By the end, you’ll have a working prototype that demonstrates closed-loop position control of a soft actuator using open-source tools.
What You'll Learn
- Fabrication of soft robotic structures using silicone moulding and tendon embedding
- Multi-channel PWM servo driving with the PCA9685 over I2C from an Arduino Uno
- Visual servoing: camera calibration, color-based marker detection, and real-time pose estimation
- Kinematic modeling of a tendon-driven continuum manipulator for forward and inverse motions
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| SG90 Servo | 3 |
| OV2640 Camera Module | 1 |
| PCA9685 PWM Driver | 1 |
| 5V 3A Power Supply | 1 |
| Fishing Line 0.5mm | 3 spools |
| 100nF Ceramic Capacitors | 10 |
| PCB Prototype Board | 2 |
| Silicone Mould Kit | 1 |
| M3 Bolts & Nuts | 10 pairs |
| 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
Final-year B.Tech (ECE, ME, Robotics) students at IITs, NITs, VIT, and BITS Pilani working on soft robotics capstones. Teams at Smart India Hackathon tackling healthcare or industrial manipulation challenges will find a ready-to-assemble continuum actuator. ATL Tinkering Lab mentors and research interns can use this kit as a standardized platform to publish first results on visual servoing of soft structures.
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?
The included AI companion (QR code) guides you through every step. For additional help, WhatsApp our support team — we respond within hours.
Is soldering experience needed?
Yes, you’ll assemble the servo driver board and camera connections. The kit provides a soldering iron and detailed schematics, assuming basic through-hole soldering skills.
Can I use this finger for a robotic gripper?
Absolutely. Multiple kits can be mounted on a base to create a multi-finger soft gripper for delicate objects. The visual feedback method scales to coordinate several fingers.
What computer vision software is required?
You’ll use Python with OpenCV on a PC. The companion guide includes sample code for marker detection and pose estimation from the OV2640 stream.
Three tendons driven by three servos curve a silicone finger through 3D space. Position estimated by camera.
What's in this kit
- Arduino Uno R3
- SG90 Servo x3
- OV2640 Camera
- PCA9685 Driver
- 5V 3A PSU
- Fishing Line 0.5mm x3
- 100nF Caps x10
- PCB Prototype Board x2
- Silicone Mould Kit
- M3 Bolts+Nuts x10
- 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