Chess Playing Robot
Designed a robotic manipulation system capable of autonomously playing chess against a human opponent. Integrated mechanical actuation, embedded control, and board-state logic to detect, grasp, and place chess pieces. Validated precision, repeatability, and reliability through iterative testing and failure analysis.

Technical Focus: Robotic manipulation, embedded control, precision actuation, repeatability, system validation

Social Humanoid Robot “RIBO”
Designed and developed an interactive humanoid robot integrating sensors, actuators, and embedded intelligence. Led electrical system integration, control architecture design, and coordinated bring-up across mechanical and software subsystems. Validated system performance through iterative testing and user interaction scenarios.

Technical Focus: System integration, embedded control architecture, human-robot interaction.

Braille Watch for Visually Impaired Users

Designed and built a wearable Braille-based watch to enable visually impaired users to read time through tactile feedback rather than visual or audio cues. The system was implemented on the FLORA wearable electronics platform based on the ATmega32u4 microcontroller. Accurate timekeeping was provided by an external DS1307 real-time clock (RTC) module interfaced via the I2C communication protocol, ensuring stable and continuous time tracking independent of microcontroller resets.

Embedded firmware was developed to read time data from the RTC over I2C, translate time information into Braille patterns, and actuate a micro-servo motor using PWM to physically represent Braille characters. USB/UART serial communication was used for firmware programming and debugging during development. The overall design emphasized compact wearable integration, reliable actuation, and low-power operation suitable for battery-powered use. Full system integration, hardware bring-up, debugging, and functional validation were performed to ensure accurate and repeatable tactile output.

Technical Focus: Wearable embedded system design, ATmega32u4 microcontroller, DS1307 real-time clock (RTC), I2C communication, PWM-based servo control, embedded firmware development (Arduino-compatible C/C++), hardware bring-up and debugging, low-power wearable electronics, and human-centered accessibility-focused hardware engineering

Face Recognition PC Software

Developed PC-based face recognition software using OpenCV and Python, integrating camera input with real-time image acquisition, image processing, and face recognition algorithms. Implemented a complete sensing and data-processing pipeline including face detection, feature extraction, and classification. Designed a graphical user interface (GUI) using Tkinter to display live camera feed, detection results, and user interactions. Validated system performance across varying lighting conditions and environmental scenarios to evaluate robustness and real-time responsiveness.

Technical Focus: Computer vision using OpenCV, Python-based GUI development (Tkinter), real-time image processing, camera-based sensing pipelines, data analysis.

Grid Solver Four-Wheel Robot
Designed and validated an autonomous four-wheel robotic system for grid-based navigation. Integrated embedded motor control, proximity sensing, and real-time decision logic to enable deterministic movement across predefined grid nodes. Performed system integration, hardware bring-up, debugging, and iterative validation to ensure reliable navigation and repeatable performance.

Technical Focus: Embedded systems, motor control, sensor integration.

Laser Guitar
Developed an opto-electronic musical instrument where laser beams replaced mechanical strings. Designed optical sensing channels using lasers and photodetectors, with analog signal conditioning to convert optical interruptions into electrical signals. Implemented embedded firmware for real-time event detection and sound generation, and validated performance under varying ambient light and noise conditions.

Technical Focus: Optical sensing, analog front-end circuits, signal conditioning, embedded firmware.

Gaming LED Display
Designed and implemented a programmable LED display system integrating digital control logic, driver electronics, and power distribution. Developed firmware for timing-critical display refresh and animation control. Performed hardware debugging, power integrity analysis, and long-duration validation to ensure stable visual output.

Technical Focus: Digital electronics, power distribution, timing control, hardware debugging.

Power Supply and Power Management for UAVs
Designed power supply and power management architectures for battery-powered UAV systems. Defined power distribution networks, selected regulators, and optimized efficiency under dynamic load conditions. Performed power measurement, noise evaluation, and reliability assessment to support stable operation of motors, sensors, and control electronics.

Technical Focus: Power management, PDN design, power integrity, system-level analysis.

Multi-Platform UAV Design (Tri, Quad, Octocopter, Fixed-Wing)
Designed and built multiple UAV platforms with differing mechanical and control requirements. Integrated propulsion systems, embedded controllers, sensors, and power electronics into tightly constrained architectures. Led system bring-up, debugging, and flight validation, evaluating tradeoffs among stability, power consumption, payload, and control complexity.

Technical Focus: System architecture, embedded control, power systems.

GPS Navigation for Autonomous Vehicles
Implemented a GPS-based navigation subsystem for autonomous robotic platforms. Integrated GPS sensing with embedded computation to enable waypoint tracking and motion execution. Validated navigation accuracy and robustness under real-world latency and positioning constraints.

Technical Focus: Sensor integration, embedded computation, navigation algorithms.

Arduino-Based Quadcopter Flight Controller
Designed and validated a custom quadcopter flight controller using a microcontroller-based platform. Integrated IMU sensors for attitude estimation and implemented real-time control loops for stabilization. Performed extensive bring-up, debugging, tuning, and flight testing to achieve stable operation.

Technical Focus: Embedded firmware, sensor fusion, control systems, real-time processing.

Soccer Robot (Bluetooth Remote-Controlled)
Designed and built a remotely operated soccer robot integrating embedded motor control, Bluetooth-based wireless communication, and real-time actuation. Developed a custom Bluetooth remote interface and embedded firmware to manage command transmission and motor response. Performed system integration, bring-up, debugging, and validation to ensure reliable low-latency operation in dynamic environments.

Technical Focus: Embedded systems, Bluetooth communication, motor control, system integration.

Home Automation System
Designed a distributed home automation platform integrating sensors, actuators, and embedded controllers. Implemented control logic for automated and manual operation, with emphasis on system reliability and modular scalability. Validated performance through integrated system testing.

Technical Focus: Embedded systems, system integration, automation.

DTMF-Based Control System
Developed a remote control system using Dual-Tone Multi-Frequency signaling for device actuation. Designed analog signal processing and digital decoding circuitry, integrated with embedded control logic. Validated robustness and reliability, serving as an early foundation in hardware debugging and system integration.

Technical Focus: Signal processing, embedded control, analog and digital integration.