Out of all the parts planned to be used, only the Arduino board, MQ-2 sensor, and buzzer are necessary, for a total of $7.43. Those are non-bulk prices and with slightly upgraded shipping; if you were ...

It really is a hands-on way to learn electronics and programming while building a useful gadget. Get your Arduino board and gas sensor to start creating your smoke detector today. Write a code for ...

I will attach all the schematics and the PCBs design for the project. I will start by doing the PCB design for the smoke sensor detector. Components: Arduino UNO; Power Supply; Smoke Sensor (MQ2) ...

If you want to make your own system for doing so, Instructables user ICStation shows off how to use an Arduino to do it. The system here monitors temperature, humidity, and smoke levels and alerts ...

Shopping for a smoke and carbon monoxide detector? Read about features, types, and other must-know details in our buying guide to make an informed choice.