Robotic Finger That Bends With Your Hand - Arduino Kit
Build a Robotic Finger That Bends With Your Hand - Arduino Flex Sensor Kit
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 controlling a robotic finger just by moving your own. This kit lets you build exactly that-a servo-driven mechanical finger that mirrors your finger's bend in real time, using a flex sensor and Arduino Uno. Whether you're a young tinkerer or a student exploring motion control, this project brings biomechanics and electronics together in a single afternoon.
What You'll Build
You'll assemble a small mechanical finger attached to an SG90 servo. The flex sensor, taped to your finger, sends resistance changes to the Arduino, which then commands the servo to match the angle. The result is an interactive demonstration of how sensors translate human movement into machine motion-perfect for science fairs, hobby workshops, or simply satisfying your curiosity for robotics.
What You'll Learn
- How to interface analog sensors (flex sensor) with Arduino
- Building a voltage divider to convert resistance to voltage
- Writing Arduino code to map sensor values to servo positions
- Calibrating and fine-tuning a real-time motion control loop
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Flex Sensor 2.2in | 1 |
| SG90 Servo | 1 |
| 47k? Resistors | 3 |
| 10k? Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 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
Perfect for CBSE Class 10-12 students exploring sensor-based robotics, ATL Tinkering Labs running quick motion control challenges, and B.Tech ECE/EEE first-year students needing a tangible demo of mechatronics. Younger makers (age 10+) with adult supervision will also grasp how sensors, voltage dividers, and servos work together-no prior experience required.
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?
Scan the QR code inside the box to activate your AI companion. It walks you through every connection, code upload, and calibration step. If you still need help, reach us on WhatsApp for real-time assistance.
Can I use this kit for a school science exhibition?
Absolutely. The real-time hand-finger mapping is a crowd-puller and clearly demonstrates sensor-actuator feedback. It's been used in many CBSE and ATL exhibitions to showcase practical mechatronics concepts.
Is the flex sensor fragile?
The 2.2-inch flex sensor is designed to bend thousands of times. As long as you avoid kinking it at extreme angles, it will last through many demonstrations and experiments. The kit includes spare resistors in case you need to adjust the voltage divider.
Can I control more than one finger with this kit?
Once you master the single-finger build, you can expand it. Add more flex sensors and servos by using the extra resistor set and the AI companion can guide you through multi-channel reading and code modifications for a full robotic hand.
Flex sensor on human finger maps bend angle to servo finger joint position in real time.
What's in this kit
- Arduino Uno R3
- Flex Sensor 2.2in
- SG90 Servo
- 47k? Resistors x3
- 10k? Resistors x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
Other projects you can build
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