# IR Telegram Alert

Day 27 of the 100 Days 100 IoT Projects collection. Board: ESP32.

When the IR sensor trips, the ESP32 pings your phone via Telegram. Instant notifications from a five-dollar board.

## How it works

When the IR sensor detects an object, the ESP32 opens an HTTPS connection to the Telegram Bot API and posts a message to your chat. Seconds later your phone buzzes with the alert. A five-dollar board becomes a notifier with global reach.

## What you'll learn

- Telegram Bot API
- HTTPS on microcontrollers
- Event-driven notifications
- API tokens and chat IDs

Full project (code, wiring diagram, Wokwi simulation): https://github.com/kritishmohapatra/100_Days_100_IoT_Projects/tree/main/ESP32_IR_Sensor_Telegram_Alert_(MicroPython)

Summary by SkillShop. Code and diagrams belong to the original repo.