Bluetooth Smart Door Lock Gesture-Controlled Robotic Hand Kit
Bluetooth Smart Door Lock Kit: Build a Gesture-Controlled Robotic Hand with Arduino Nano
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform your own hand gestures into a working access credential. This kit lets you build a wearable sensor glove that reads finger bends in real time and transmits them over Bluetooth to a 5-servo robotic hand. The robotic hand physically mirrors each motion - and can be programmed to recognize a secret gesture sequence that actuates a door lock. It's a biometric alternative to keys, built from first principles.
What You'll Build
You'll assemble a glove fitted with five flex sensors that convert finger angles into precise voltage signals. On the receiver side, an Arduino Nano processes incoming Bluetooth data and commands five SG90 servos, each pulling a fishing line to flex a 3D-printed (or crafted) finger. The synchronized system gives you a robotic hand that instantly copies your own, ready to be mounted near a latch or deadbolt as a gesture-based smart lock demonstrator.
What You'll Learn
- Calibrating flex sensors and reading analog voltages with Arduino's ADC to map finger angles
- Configuring HC-05 Bluetooth modules for master-slave wireless serial communication
- Controlling servo motors with PWM signals and translating kinematic data into smooth finger trajectories
- Building a real-time gesture-recognition pipeline that triggers a lock mechanism on a predefined hand pose
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 2 |
| Flex Sensor 2.2in | 5 |
| SG90 Servo | 5 |
| HC-05 Bluetooth | 2 |
| 47k? Resistors | 5 |
| 10k? Resistors | 5 |
| 100nF Caps | 10 |
| 5V 2A Power Supply | 1 |
| Velcro Glove Base | 1 |
| Fishing Line 0.3mm 5m | 1 |
| PCB Prototype Board | 2 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify flex sensor ranges, resistor dividers, and servo torque manually | Pre-tested as a system with matched voltage dividers and servo calibration |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging and signal conditioning | 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 advanced kit is built for B.Tech ECE/EEE final-year students creating gesture-based prosthetics or access control prototypes, Smart India Hackathon hardware track teams, and research scholars at IITs, NITs, VIT, or BITS Pilani. It also serves ATL Tinkering Labs that cater to students aged 18-21 who are ready to move beyond plug-and-play modules into integrated sensing and actuation.
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 on the box to open the AI companion, which knows every connection and code line in this kit. If you need a human, our WhatsApp support team responds within hours.
Can the robotic hand actually lock/unlock a door?
Yes. Once the hand is calibrated, you can attach a small cam or latch to one finger and program a specific gesture (or sequence) that triggers an unlock action. The kit includes code frameworks to map a gesture filter to a servo-based lock stroke.
Do I need prior soldering experience?
The kit includes a soldering iron and solder wire; the PCB prototype boards require basic through-hole soldering. The AI companion shows close-up photos of each joint, and the flex-sensor conditioning circuit is simple enough for a first-time solderer to manage within the build time.
Can I replace Bluetooth with Wi-Fi for longer range?
While the included HC-05 modules are ideal for up to 10 metres, you can swap them for an ESP8266 or ESP32 module if you're comfortable adapting the serial communication code. The gesture data stream is lightweight, so the transition is straightforward for advanced users.
Smart Lock - Flex sensors on fingers capture hand gestures and drive a 5-servo robotic hand replica via Bluetooth.
What's in this kit
- Arduino Nano x2
- Flex Sensor 2.2in x5
- SG90 Servo x5
- HC-05 Bluetooth x2
- 47k? Resistors x5
- 10k? Resistors x5
- 100nF Caps x10
- 5V 2A Power Supply
- Velcro Glove Base
- Fishing Line 0.3mm 5m
- PCB Prototype Board x2
- 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