Light Watcher

ESP32 Telegram bot that tracks and reports power outages to the minute, with battery backup.

Physical productfreeUkraine

Light Watcher is a free, open-source DIY ESP32 device that sends a Telegram notification the instant grid power goes out or comes back, accurate to the minute, using a battery backup to stay online through the outage. It logs basic outage statistics and can notify a group chat. It's built for people in areas with frequent, unpredictable power outages, such as Ukraine, who want automatic alerts about their electricity supply.

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