Build a Security Alarm with ESP32 & Phone — PIR + Siren + SMS Alert | STEM Buddy

Build a complete security alarm system using just an ESP32 and your phone! No extra hardware needed — your phone becomes the PIR motion sensor, siren speaker, and SMS alert sender.

🔧 How it works:
• Phone's camera detects motion using AI-based person detection
• ESP32 triggers a loud siren audio on the phone
• An SMS alert is sent automatically to your emergency contact
• LED blinks red and LCD shows "INTRUDER ALERT"

📦 What you need:
• ESP32 board
• STEM Buddy app (free on Google Play)
• USB cable to upload the code

⚡ Components used:
• PIR Motion Sensor (camera-based)
• Audio Player (alarm siren)
• SMS (real text message alert)
• LED, LCD, Buzzer (visual + audio feedback)

🔗 Links:
• STEM Buddy App: https://play.google.com/store/apps/details?id=cc.codeskool.stembuddy
Source Code:
• STEM Buddy C++ Library: https://github.com/hacktronics/STEMBuddy-Arduino

#ESP32 #Arduino #IoT #SecurityAlarm #STEMBuddy #PIR #SMS #Electronics #Maker #STEM #CodeSkool

Видео Build a Security Alarm with ESP32 & Phone — PIR + Siren + SMS Alert | STEM Buddy канала Code Skool