When reed switch is opened, pin 2 of Arduino goes high with the help of the pull-up resistor R2, and the alert signal is available through the piezo-speaker PZ1 (not an active piezo-buzzer). At the ...

The alarm automatically switches off after a few seconds. Circuit and working. Circuit diagram of the Arduino based visitor alarm is shown below. It is built around an Arduino Uno board (Board1), a ...

A switch and buzzer is easy enough, but the key component of this build is an actuated rocker switch. It’s basically a normal toggle switch with two additional terminals for a coil that can move ...

What You’ll Need: Arduino Uno (or any compatible board) Joystick module LED (any color) Resistor (220 ohms for the LED) Buzzer Breadboard Jumper wires Circuit Diagram: Joystick: VRx to Analog Pin A0 ...

By observing the graph, users can visualize the intensity and direction of the detected vibrations. Steps to Use Setup Arduino Code. Connect the Arduino Uno board to the ADXL335 accelerometer, LCD ...

At first, the state of the PIR sensor is set to LOW. it means that no motion is detected. When a motion will be detected by the PIR sensor, it will send a signal to the microcontroller. The ...

Circuit Diagram: The complete Arduino Piano Project can be built on top of a breadboard with some connecting wires. The circuit diagram made using fritzing that shows the breadboard view of the ...

Fig. 2: Circuit diagram for interfacing laser LED module with Arduino. Connect pins 7 and Gnd of Arduino to pins 1 and 3 of KY-008 module, respectively. Run the first sketch (onoff.ino) to turn the ...