ESP8266 Crypto Price Monitor & Alert System

This project is custom firmware for the ESP8266 microcontroller that continuously tracks cryptocurrency prices and keeps users updated in real time.

The system combines reliable connectivity, visual feedback, and instant messaging alerts:

Dual Wi-Fi configuration with automatic fallback ensures uptime.
Fetches live BTC and ADA prices from a public API.
Parses JSON data directly on the device.
Displays prices, percentage changes, and trend snapshots (15m / 1h / 4h) on an OLED screen.
Sends Telegram alerts when price changes exceed thresholds (1%–5%).
Dispatches scheduled updates at fixed times (08:00, 12:00, 16:00, 21:00).
Includes reconnect logic, local time sync via NTP, and immediate “alive” notifications.

This project demonstrates how to integrate IoT hardware, live APIs, and messaging platforms into a compact, always-on monitoring device.

Technologies: C++ ESP8266 HTTP JSON Oled display Telegram Bot Api integration NTP time sync

Tags: IoT ESP8266 Cryptocurrency Real-time monitoring API integration Telegram OLED Automation Embedded Systems

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