Open Source Projects

This project involves designing a safe and efficient Lithium-Ion Battery Charger. It regulates voltage and current to protect the battery from overcharging and overheating. The circuit includes features like constant current/constant voltage (CC/CV) charging and automatic cutoff. Ideal for use in portable electronics, DIY kits, and renewable energy systems.

The Wireless Weather Station is an embedded system designed to monitor environmental conditions such as temperature, humidity, pressure, and light intensity. This data is collected using sensors and transmitted wirelessly to a cloud server or display interface via Wi-Fi. The project involves designing a compact and efficient Printed Circuit Board (PCB) integrating an ESP32 microcontroller, multiple environmental sensors (e.g., DHT22, BMP280, LDR), and a stable power supply module. The PCB is carefully laid out to ensure accurate sensor readings, efficient power distribution, and minimal noise interference. This system enables real-time remote weather monitoring and serves as a foundation for smart environmental monitoring applications.

A DC-AC inverter circuit converts direct current (DC) into alternating current (AC), enabling the use of AC-powered devices from DC sources like batteries or solar panels. It typically uses transistors or MOSFETs to switch the DC input at high frequencies. A transformer or filter then shapes the output into a usable AC waveform, often sine or modified sine wave. Inverters are essential in renewable energy systems, UPS, and mobile power applications.

A PCB-based system that monitors main and backup power sources, ensuring timely alerts during outages or low backup levels.

A **programmable power supply** is an electronic device that provides controlled and adjustable electrical power to a circuit or device. Unlike fixed power supplies, it allows users to set voltage, current, and sometimes power limits through software, digital interfaces, or manual controls. These power supplies are commonly used in testing, automation, and research applications where precise and repeatable power control is required. They often feature remote programmability via USB, Ethernet, or GPIB interfaces, making them ideal for integration into automated test setups.

This ESP32 smartwatch PCB is a compact, wearable design featuring Wi-Fi, Bluetooth, an OLED/TFT display, and essential sensors like an accelerometer and heart rate monitor. It includes Li-Po battery management, optimized power efficiency, and a sleek layout for smart wearable applications.