With MineGuard, miners are warned of danger in real-time underground. Exposure data syncs automatically once back above ground.
My name is Hanna Ondrasek, and this project addresses a critical issue in underground mining: the detection of hazardous gases in environments without internet access.
Built with a Xiao ESP32C3 microcontroller and a gas sensor, buzzer, RTC module, and a Firebase realtime database, MineGuard emphasizes reliability, offline functionality, and simple deployment in harsh environments where worker safety depends on instant, autonomous alerts.
MineGuard is a low-cost, real-time alert system designed to warn miners of toxic gas exposure underground. While disconnected from WiFi, the system stores exposure data locally. Once miners return to the surface, the device syncs with the cloud for supervisors to review exposure logs and trends.