We have a collection of almost 500+ Arduino projects with Code, Circuit Diagram, and detailed explanations completely free for everyone to build and learn on their own. VCC is the power supply pin of ...

By using this formula you can convert any analog voltage to t Arduino analog read value. The below circuit diagram shows you the circuit connections for the Rain Drop Sensor with Arduino. The design ...

Connect the rain sensor's analog output to the Arduino's A0 pin. Connect the VCC and GND of the rain sensor to the 5V and GND pins of the Arduino. Connect the positive terminal of the buzzer to ...

The points A and B of the circuit are connected to the points A and B of the rain sensor respectively. When rain is falling, the rain water will fall on the rain sensor which has aluminum wires on ...

2: Block diagram of motion sensor alarm The circuit diagram of the motion sensor alarm is shown in Fig. 3. It consists of a PIR motion sensor (MS1), Arduino Nano (Board1), LM386 audio amp (IC1), and 8 ...