Projects and Systems

I developed a ground-based autonomous antenna tracking system to maintain reliable communication with drones, especially in non-line-of-sight (NLOS) conditions. The system calculates the drone's position using real-time telemetry data and dynamically orients a stepper-motor-driven antenna to track the drone mid-flight. It dramatically improved signal reliability over long distances and variable terrain. 

I established a robust wireless communication link between the onboard drone computer and the ground control station. This included configuring serial telemetry, optimizing communication protocols, and ensuring data consistency during flight. It enabled real-time data streaming for monitoring and remote commands - key for autonomous missions. 

In our smart agriculture initiative, we retrofitted a drone with a 12-litre fertilizer tank to create an autonomous aerial spraying system for precision farming. The system integrated a custom-designed pump mechanism controlled by the flight controller, allowing for targeted spraying based on GPS coordinates and pre-defined flight paths. We optimized the drone's payload balance, reinforced the frame for stability, and conducted multiple test flights to ensure uniform coverage and efficient dispersal. This project aimed to reduce manual labor, minimize fertilizer wastage, and promote sustainable farming through automated, high-precision delivery. 

We’ve designed several custom PCBs, including:

• A high-power distribution board for safely delivering current to ESCs driving BLDC motors on drone systems.

• A compact Raspberry Pi HAT for the antenna tracker, integrating motor drivers, GPIO expanders, and power regulation.
  These designs were tested under real operating conditions with attention to current ratings, EMI mitigation, and thermal safety.

For a multi-legged robotic platform, I handled end-to-end system integration, including:

• Designing and refining the robot’s control PCB

• Iterating through multiple hardware versions to enhance stability

• Coordinating firmware with mechanical design to achieve stair-climbing and multi-DOF movement
  This was a milestone project in precision motion control and embedded coordination.

I worked on reverse engineering a 2-wheeler electric vehicle, mapping out its entire control and communication structure. I then designed PCBs for:

• Motor driver interface

• IoT-enabled monitoring

To modernize a historic library exhibit, I engineered an automated interactive lighting display using Raspberry Pi 4 and NeoPixels. I replaced a vintage control setup with a new embedded system, also designing the custom PCB to manage power and signal routing. The system runs scheduled animations, reacts to inputs, and has become a functional and aesthetic centerpiece in the library.