I built a small circuit that uses the MS-CDS05 light sensor to detect changes in surrounding brightness. When it gets dark, the LED automatically turns on, and when it’s bright, the LED stays off. This project helped me understand how sensors interact with the environment and how simple automation can save energy. 

In this project, I used the SW-420 vibration sensor to detect movement or shaking. If the sensor picked up vibrations, the LED would turn on as an alert. It was a fun way to learn about real-world applications, like how sensors can be used in security or monitoring systems. 

For a bigger challenge, I combined an RFID reader, a servo motor (SG90), and an LCD1602 display to create a mini “smart car lot.” The system scans RFID cards to identify cars, lifts the barrier using the servo, and shows the card ID on the screen. This experiment taught me how to connect multiple components together and think about how technology can make daily life more convenient. 

A small interest born purely from curiosity — practicing stenography to sharpen focus and discipline. There’s no competition or external goal here; I simply enjoy learning something niche, precise, and deeply technical. (This entire section was written using stenography.)