This DIY gas leakage detector is designed for educational and basic monitoring purposes. For critical safety applications, ...

Do not try to build your own smoke alarm. ... their life to a $5 development board and some Arduino source code they copied ... , home automation, MQ2, NodeMCU, smoke detector, smoke sensor.

Do not try to build your own smoke alarm. Seriously. It takes a special kind of fool to trust their home and potentially their life to a $5 development board and some Arduino source code they ...