Projects built for the real world.

Dual-axis solar tracking system with a closed-loop control architecture, real-time irradiance profiling, and onboard energy yield monitoring. Delivers measurable output improvement over fixed-tilt installations through adaptive orientation logic.

Key Highlights

• Dual-axis gear-reduced DC actuators with encoder position feedback
• Quadrant LDR array with differential control loop for precision tracking
• Energy yield monitoring via INA219 current + voltage sensing
• Custom 4-layer PCB with onboard H-bridge motor drivers and logic
• OLED real-time display with cumulative daily yield logging to flash

Embedded multi-gas monitoring platform for industrial environments. Detects combustible and toxic gas concentrations with configurable alarm thresholds, automated ventilation relay control, remote GSM alerts, and local OLED status display.

Key Highlights

• Multi-channel gas sensor fusion with cross-sensitivity compensation
• Dual-threshold configurable alarm with PPM limit adjustment per channel
• GSM-based SMS alert dispatch on threshold breach events
• Relay-driven ventilation interlock and audible siren output
• Architecture structured for migration to electrochemical sensor modules

Standalone embedded access control unit with optical fingerprint recognition, on-device identity storage, relay-actuated electromagnetic door lock, and full admin enrollment and audit workflow — deployable without network infrastructure.

Key Highlights

• Optical fingerprint sensor with 1:N matching up to 127 enrolled identities
• On-device identity records in protected non-volatile storage
• Relay-controlled electromagnetic lock with fail-secure default state
• Admin mode: enroll, revoke, and audit identity access records
• Timestamped access event log displayed on LCD status panel

Edge-deployed Raspberry Pi translation terminal with on-device speech recognition, multilingual translation, and TTS audio output — fully operational offline for 10 core language pairs. 7-inch touchscreen interface with live waveform visualisation.

Key Highlights

• OpenAI Whisper (tiny.en) for on-device ASR at <400ms end-to-end latency
• LibreTranslate engine for fully offline translation across 10 language pairs
• espeak-ng TTS with language-matched phonetic synthesis via 3W speaker
• 7-inch DSI touchscreen with PyGame touch UI and live audio waveform
• Hybrid edge-cloud fallback to Google Cloud for 40+ extended languages

Custom AMR platform for indoor logistics and warehouse automation. Integrates 2D LiDAR-based SLAM navigation, dynamic obstacle avoidance, and a web-based mission control interface for multi-point task assignment.

Key Highlights

• 2D LiDAR + wheel encoder fusion for localisation in structured environments
• ROS 2 Nav2 with DWA local planner for dynamic obstacle avoidance
• Web-based mission control UI for multi-waypoint autonomous task scheduling
• CAN bus motor drive interface with velocity and torque control modes
• Li-Ion battery pack with 8-hour continuous operation runtime

Production-line vision inspection system using edge-optimised object detection to classify PCB solder defects in real time. Integrates with conveyor trigger signals and exposes a REST API for MES/ERP system reporting.

Key Highlights

• YOLOv8n exported to NCNN format for sub-80ms edge inference per frame
• Trained on 6,000 annotated PCB defect images: bridges, tombstones, misalignment
• GPIO trigger integration for conveyor belt synchronisation and reject actuation
• Defect classification and confidence logging to SQLite with frame capture
• REST API endpoints for direct MES/ERP integration and defect report queries

Fully custom Arduino-compatible microcontroller board designed from schematic to fabrication. Demonstrates end-to-end PCB development workflow including component selection, multi-layer layout, DFM review, and bring-up validation.

Key Highlights

• ATmega328P with custom USB-C programming interface via CH340C UART bridge
• Dual-rail 3.3V / 5V regulation with comprehensive decoupling network
• 4-layer PCB with controlled impedance traces on high-speed signal layers
• DFM-compliant layout reviewed against JLCPCB production design rules
• Functional parity with Arduino Uno — accepts standard shields and firmware

Multi-sensor environmental monitoring platform with local display, persistent SD card data logging, and WiFi telemetry upload to cloud dashboards — designed for scalable multi-node distributed field deployment.

Key Highlights

• BME280 + BMP280 sensor fusion: temp, humidity, pressure, and altitude
• Real-time OLED display with multi-screen scrollable data views
• SD card data logging in structured CSV format with RTC timestamps
• MQTT-based telemetry push to configurable cloud dashboard broker
• Per-parameter alert thresholds with configurable sampling interval

Embedded IR signal capture, decode, and replay system supporting all major infrared remote protocols. Designed as a diagnostic and automation subsystem for appliance control integration and IR protocol analysis workflows.

Key Highlights

• Decodes NEC, RC5, RC6, SIRC, and Samsung IR protocol formats
• 38 kHz demodulating receiver IC with high-accuracy pulse timing capture
• High-power multi-LED transmitter array for reliable long-range signal replay
• Non-volatile code library with named signal management and recall
• UART command interface for PC-based signal capture and replay automation

Custom STM32-based field-oriented control (FOC) motor drive board for BLDC motors up to 48V / 100A continuous. CAN bus interface enables tight integration with industrial automation systems and robotics drive stacks.

Key Highlights

• STM32G4 MCU running sensor-based FOC algorithm at 20 kHz PWM frequency
• 6x Infineon power MOSFETs — 48V / 100A continuous operation rated
• CAN bus interface implementing CANopen CiA 402 motor drive profile
• Dual feedback support: Hall-effect sensors and incremental quadrature encoder
• Hardware overcurrent, undervoltage, and thermal shutdown protection circuits

Embedded RFID-based identity logging system for institutional access and attendance management. Real-time identity verification with tamper-resistant timestamped SD logging and structured CSV export via Python reporting backend.

Key Highlights

• ISO 14443A MIFARE RFID reader with card UID validation and matching
• Timestamped attendance records written to SD card in FAT32 format
• LCD real-time identity and access status display on each scan event
• Python reporting backend for formatted CSV and PDF generation
• Admin mode for card enrollment, revocation, and audit log export

ROS 2-based ground rover performing real-time simultaneous localisation and mapping on unknown terrain. Fully autonomous waypoint navigation with dynamic obstacle avoidance — no pre-built maps required.

Key Highlights

• RPLIDAR A1 for 360-degree 2D LiDAR environment mapping
• ROS 2 Nav2 stack with SLAM Toolbox for real-time map building
• Autonomous goal navigation via ROS 2 action server interface
• Raspberry Pi 4 compute with STM32-based differential motor controller
• Live map and telemetry visualisation in RViz2 over WiFi bridge

Underwater remotely-operated vehicle engineered for subsurface inspection and exploration. IP68-rated electronics housing, brushless thruster array, depth sensing, and FPV video uplink via hardwired coaxial tether.

Key Highlights

• 6-thruster configuration with vectored thrust for 6-DOF manoeuvring
• IP68 main electronics enclosure with cable penetrator seal system
• FPV camera with analog video uplink over 30m coaxial tether
• MS5837 depth and pressure transducer enabling depth-hold hold mode
• ArduSub firmware with joystick-based surface tether controller

12-DOF quadruped robot with full inverse kinematics gait generation, IMU body stabilisation, and onboard ROS compute. Capable of dynamic terrain adaptation with multiple gait modes and real-time remote teleoperation.

Key Highlights

• 12 high-torque digital servo actuators with closed-loop position feedback
• Analytical inverse kinematics engine for trot, walk, and creep gaits
• MPU-6050 IMU for real-time body pitch and roll stabilisation
• Raspberry Pi 4 running ROS-based motion planner and gait scheduler
• Bluetooth gamepad teleoperation with real-time pose override capability

Holonomic mecanum-wheeled robot platform with full omnidirectional motion. ROS 2-controlled with independent motor encoder feedback and a reinforced chassis rated for 25 kg payload — designed for indoor logistics applications.

Key Highlights

• 4-wheel mecanum drive with independent brushed DC motor encoder feedback
• Holonomic kinematics solver: simultaneous translation and rotation
• ROS 2 Twist-subscribed velocity controller with odometry publisher
• Dual-mode teleoperation: WiFi via ROS and RF 2.4 GHz joystick
• Reinforced aluminium chassis with 25 kg static payload rating

Real-time American Sign Language recognition system using on-device MediaPipe landmark extraction and a custom-trained LSTM classifier. Outputs continuous text at 30 fps from standard camera input with 96.8% held-out test accuracy.

Key Highlights

• MediaPipe Hands: 21-point 3D hand landmark extraction per frame
• Custom LSTM classifier trained on 26-class augmented ASL gesture dataset
• Word-building character buffer with backspace and space gestures
• Runs at 30 fps on CPU — no dedicated GPU required
• 96.8% top-1 classification accuracy on 2,600-sample held-out test set

Webcam-based eye-gaze cursor control system enabling completely hands-free UI interaction. Uses facial landmark detection, pupil localisation, and polynomial regression calibration for accurate gaze-to-screen mapping.

Key Highlights

• dlib 68-point facial landmark model for precise eye region isolation
• Blob detection and ellipse fitting for sub-pixel pupil localisation
• 9-point calibration grid with 2nd-order polynomial regression mapping
• Smooth gaze interpolation with configurable dwell-click trigger threshold
• 25 fps inference on CPU — deployable on Raspberry Pi 4

Real-time driver monitoring system computing Eye Aspect Ratio from facial landmarks to detect sustained eye closure. Triggers audio and GPIO alert outputs within 200ms of drowsiness onset — optimised for embedded edge deployment.

Key Highlights

• dlib 68-point landmark model for precise eyelid region tracking
• EAR algorithm distinguishing voluntary blinks from sustained drowsy closure
• 1.5s sustained closure window before alert activation
• Dual alert output: audio buzzer and GPIO relay-driven cabin LED strip
• Optimised for Raspberry Pi 4 real-time inference at 20+ fps

CCTV-integrated crowd safety analysis system detecting mask non-compliance and proximity violations in real time using fine-tuned YOLOv5 and DeepSORT tracking — with annotated live feed and webhook-based alert dispatch.

Key Highlights

• YOLOv5s fine-tuned on 8,000-image masked/unmasked annotated face dataset
• DeepSORT multi-object tracker for persistent cross-frame person identity
• Euclidean inter-person distance threshold for social distancing violation
• Live annotated video feed with per-person compliance status overlay
• Webhook alert integration for real-time security event notification

End-to-end ANPR pipeline combining fine-tuned object detection for plate localisation and OCR for multi-format character extraction. Supports Indian HSRP and international plate formats with a REST API for system integration.

Key Highlights

• YOLOv8n fine-tuned on 5,000 annotated licence plate region images
• EasyOCR for robust multi-script and multi-format character extraction
• Supports Indian HSRP, IND series, and international plate format standards
• Timestamped SQLite vehicle log with plate string and confidence score
• REST API for integration with parking management and gate control systems

Full-stack web platform for combat sports event management. Handles athlete profiles, match scheduling, bracket generation, result tracking, live leaderboards, and multi-role admin moderation — built for real event deployment.

Key Highlights

• Next.js 14 App Router with SSR and dynamic tournament bracket rendering
• Supabase PostgreSQL backend with row-level security policy enforcement
• Role-based access control: athlete, coach, referee, and admin tiers
• Real-time leaderboard updates via Supabase Realtime subscriptions
• PDF match certificate generation with dynamic event data templating