Gulshan Kumar

Hardware & Prototyping Projects

Personal Exposure Monitors

Personal Exposure Monitors

I have designed and developed a series of compact personal exposure monitoring devices based on ESP32 and STM32 platforms. These prototypes are capable of high-resolution data acquisition, recording PM2.5 , CO2 , temperature, and humidity at 1-second intervals, with integrated GPS-enabled geotagging for precise spatial mapping of exposure. The systems have been engineered with a strong focus on power optimization, enabling reliable all-day operation on a single charge. This work integrates hardware design, embedded systems development, and data acquisition strategies to create robust, portable tools for real-world exposure assessment. The devices are particularly suited for applications such as personal exposure studies, mobile air quality mapping, and community-level monitoring, providing actionable, high-resolution datasets for research and policy support.

Seeed Xiao e-Ink Display C++ Sensirion SPS30 Sensirion SEN64 Geotagging 3D Printing Enclosure
Outdoor PM2.5 Monitor

Low-Cost PM2.5 Outdoor Monitor

A low-cost PM2.5 monitoring device was designed and developed from the ground up to address critical data gaps in air quality monitoring. This system served as the core platform for evaluating low-cost sensor performance across diverse meteorological conditions in India. The device has been deployed in outdoor environments for over four years, demonstrating robust performance under extreme weather conditions. Integrated with IoT capabilities, it enables real-time data transmission to a centralized monitoring system, supporting continuous, large-scale air quality assessment and research applications.

Weatherproofing PCB Fabrication IoT Integration Data Logging
DIY Smart Air Purifier

Open-Source Smart Air Purifier

Designing an open-source, low-cost smart air purifier aimed at indoor particulate matter reduction. The project focuses on democratizing air purification technology while raising community awareness regarding indoor air quality issues.

Product Design Laser Cutting Airflow Dynamics Community Outreach
UAGV Prototype

Unmanned Autonomous Ground Vehicle (U.A.G.V.)

For my M.Tech Thesis, I developed a compact U.A.G.V. equipped with a rocker-bogie mechanism. This mechanical design provided a highly stable platform suitable for tracking and environmental sensing applications across uneven terrain.

Mechatronics Mechanical System Design CNC Machining Robotics