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MQ-4 methane sensor · 200–10000 ppm datasheet range projects

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Smart Miner Safety Helmet with Gas Detection and Emergency Beacon — project thumbnail preview
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Smart Miner Safety Helmet with Gas Detection and Emergency Beacon

This project is an IoT-enabled mining safety helmet that watches for methane (MQ-4), carbon monoxide (MQ-7), heat stress (DHT...

ESP32 Arduino framework DHT22 temperature · humidity sensor
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