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 ...

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 ...

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 ...

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 ...

This Arduino based visitor alarm is useful for offices, clinics and shops. It alerts you to the entry of a visitor by producing a beep sound every time the door is opened. The alarm automatically ...

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 for interfacing of KY-008 laser LED module with Arduino is shown in Fig. 2. Fig. 2: Circuit diagram for interfacing laser LED module with Arduino Connect pins 7 and Gnd of Arduino to ...