Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 20 | Glove controlled mouse with haptic feedback |
Khushi Kalra Vallabh Nadgir Vihaansh Majithia |
Frey Zhao | design_document1.pdf proposal1.pdf |
|
| # Problem For digital artists, traditional mousepads and trackpads are constrained and limit natural hand motion, making writing or drawing on a laptop cumbersome. Existing gesture-based input devices are often expensive, camera-dependent, or occupy significant desktop space. There is a need for a low-cost, wearable, intuitive interface that enables free-form cursor control and natural gesture-based clicking. # Solution We propose a wearable glove system that allows users to control a computer cursor using hand movements and perform mouse clicks with natural finger pinches. The system consists of four main subsystems: 1) Hand Motion Tracking Subsystem – captures hand orientation and motion to move the cursor. 2) Finger Gesture Detection Subsystem – detects index and middle finger pinches for left/right clicks. 3) Haptic Feedback Subsystem – provides real-time vibration feedback for click confirmation. 4) Software Subsystem – processes sensor data, maps gestures to mouse actions, and communicates with the computer. # Components ## Subsystem 1: Hand Motion Tracking Purpose: Detects hand orientation and movement to control the 2D cursor position. Components: IMU sensor (accelerometer + gyroscope + magnetometer) for 3D motion tracking. Microcontroller (ESP32 or Arduino Nano 33 BLE) for sensor data processing. Custom PCB to host IMU, microcontroller, and wiring to glove sensors. A lightweight Lipo battery. Description: The IMU measures acceleration and rotation of the hand. Firmware filters and converts these readings into cursor velocity and direction. Provides smooth, real-time hand-to-cursor mapping (targeting cursor movement or click) cursor movement or click) <50 ms. 4) Wearability: Glove and PCB fit comfortably on the hand without restricting motion. 5) Software Functionality: Firmware correctly processes sensors; optional PC software handles calibration and visualization. 6) Haptic Feedback: Vibrations are triggered reliably with each recognized click gesture. ## Subsystem 2: Finger Gesture Detection Purpose: Detects finger pinches to generate left/right mouse clicks and optional extra gestures. Components: Flex/bend sensors on index and middle fingers for left/right clicks. Optional thumb flex sensor for gestures like scrolling or drag. Optional capacitive/touch sensor for hover or special gestures. Pull-down resistors and conductive wiring embedded in glove. Description: Flex sensors detect finger bending; bending past a threshold triggers clicks. Firmware includes debouncing to prevent multiple clicks from one gesture. Optional thumb and touch sensors provide extended functionality. ## Subsystem 3: Haptic Feedback Purpose: Provides tactile confirmation for detected gestures. Components: Small vibration motor (coin or pager type). Driver circuitry on PCB to control vibration intensity. Description: The microcontroller activates vibration briefly when a click gesture is recognized. Enhances user experience by providing immediate feedback without needing visual confirmation. ## Subsystem 4: Software Subsystem Purpose: Maps sensor data to cursor movement, gestures, and communicates with the computer. Components: Microcontroller firmware for sensor data acquisition, filtering, and gesture detection. PC-side optional calibration GUI (Python or C++) for sensitivity adjustment and mapping hand motion to screen resolution. Description: Processes raw sensor data and converts IMU readings into cursor deltas (Δx, Δy) and flex/touch inputs into click commands. Supports USB HID or Bluetooth HID communication to the computer. Optional software smooths cursor motion, calibrates sensors, and visualizes hand gestures for testing (Stretch). # Criterion for Success 1) Resolution (Equivalent DPI): variable DPI: (Range: 400-1000 DPI) 2) Max Tracking Speed (IPS): ≥50 IPS (so quick flicks don’t drop). 3) Acceleration Tolerance: ≥5 g without loss of tracking (users move hands fast). 4) Polling Rate: ≥100 Hz (every 10 ms or better). 5) End-to-End Latency: ≤20 ms (ideally closer to 10 ms). 6) Click Accuracy: ≥95% reliable detection of intended clicks, false positives ≤1%. 8) Haptic Feedback Response Time: <40 ms after click detection. 9) Cursor Control Accuracy: Hand movements map to cursor position within ±2% of intended location. 10) Wearability: Glove and PCB fit comfortably on the hand without restricting motion. |
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