Tag

#safety

2 tutorials

arduino beginner 30 min

Build an MQ-2 gas and smoke alarm on an Arduino: wiring, warm-up, calibration, buzzer code, and the honest limits of a DIY detector.

esp32 beginner 20 min

Wire an MQ-2 gas sensor to an ESP32 and read combustible gas concentrations. Important caveats about what MQ sensors can and cannot tell you.