This circuit diagram illustrates a fire and smoke detection system using an Arduino UNO R4 WiFi, MQ2 smoke sensor, and a flame sensor (fire sensor). The Arduino is the central controller that receives ...

English: Code to control a home alarm system with Arduino Uno using a sensor connected to pin 11 and a buzzer on pin 8. When the sensor detects presence (HIGH state), the buzzer emits a sound with ...

Smart Blind Stick using Arduino Circuit Diagram. The below circuit diagram shows the complete hardware wiring setup of the Arduino-based Smart Walking Stick for the Blind people, detailing how the ...

For example, you can make your circuit sound an audible alert ... Arduino Uno R3; 5mm LDR; 10K ¼W Resistor; 1K ¼W Resistor; 5mm Red LED ; 5V Piezo-Buzzer ; 9V battery; ... 7 comments on “ Arduino ...

It’s an electronic device commonly used to produce and signaling a procces that is happening through a sound, beep or etc. The Piezo buzzer produces sound through electricity. Some uses of Piezo ...