Overview
This session introduced sensing — the ability for hardware to detect the world around it. Students built circuits where an IR sensor controls an LED and buzzer, creating their first automated system.
Topics
How IR transmitters and receivers work
Digital output readings from sensors
Object detection using IR reflective sensors
Serial Monitor — viewing live sensor data
Activities
LED turns ON automatically when object detected
Buzzer activates based on IR sensor input
Combined LED + buzzer alarm system build
Monitor live sensor readings via Serial Monitor
Photos
Highlights
- Automation concept clicked the moment the LED responded to a hand
- Serial Monitor made invisible sensor data visible — a real insight
- Alarm system activity brought all concepts together
- Strong logical thinking applied throughout the session