Flex Sensor Bend Starter Kit Kit with Arduino Uno + Sensor
Flex Sensor Bend Angle Kit with Arduino Uno & OLED – Visualize Every Degree in Real Time
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Ever wondered how a simple strip of polymer can turn your finger’s bend into a precise angle reading? This kit empowers you to build exactly that—a compact digital goniometer that shows 0 to 90 degrees on a crisp OLED screen. Whether for a health-monitoring prototype, a smart glove concept, or a CBSE classroom project, you’ll have a working flex sensor system in a single afternoon.
What You'll Build
You’ll assemble a voltage divider circuit around the flex sensor, read its changing resistance through the Arduino Uno’s analog input, and map that signal to an angle. The OLED display then updates in real time as you bend the sensor, letting you instantly see the effect of each movement. The final assembly fits neatly on a breadboard and can be powered by a standard 9V battery, making it portable and ready to demo.
What You'll Learn
- How a flex sensor translates physical bending into a measurable electrical resistance
- Analog-to-digital conversion and voltage divider theory in a real circuit
- I2C communication between the Arduino and a 0.96-inch OLED display
- Mapping sensor values to human-readable angle data using Arduino code
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Flex Sensor 2.2in | 1 |
| 0.96in OLED | 1 |
| 47kΩ Resistors | 5 |
| 10kΩ 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
Young inventors aged 8 and above who are ready to move beyond blinking LEDs and into real-world sensor applications. CBSE Class 11–12 students, ATL Tinkering Lab participants, and hobbyists exploring wearable tech will find it an immediate confidence builder. First-year B.Tech ECE or EEE students use it as a hands-on analog electronics refresher, while parents appreciate the AI companion that guides their child past every hurdle.
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?
Simply scan the QR code to chat with the AI companion, trained on the exact flex sensor circuit. You’ll get instant schematic checks, code debugging, and wiring verification. If needed, our WhatsApp support steps in within 2 hours.
Can I power the kit without a 9V battery?
The included 9V battery snap allows you to use a standard 9V battery (not included due to shipping restrictions). Alternatively, you can power the Arduino Uno directly via USB while programming, which also provides 5V to the circuit.
What other sensors can I add after this project?
Once you understand analog sensing and I2C communication, adding modules like an MPU6050 gyroscope or a pulse sensor becomes straightforward. Our AI companion can suggest next projects and adaptations using the same breadboard and Arduino Uno.
Is the angle reading accurate enough for a science fair exhibit?
The flex sensor provides repeatable relative angle measurements perfect for demonstrating biomechanics concepts. For a CBSE investigatory project, you can calibrate it against a known goniometer to improve accuracy, a process the AI companion will walk you through.
Flex sensor measures finger bend angle. OLED shows angle value 0-90 degrees. Intro to analog flex sensing.
What's in this kit
- Arduino Uno R3
- Flex Sensor 2.2in
- 0.96in OLED
- 47kΩ Resistors x5
- 10kΩ 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