Circuit Documentation

Summary

This circuit is designed to detect motion using a PIR Motion Sensor and activate a buzzer through a relay module. The circuit is powered by two 9V batteries. When motion is detected, the PIR sensor sends a signal to the relay module, which then closes the circuit to power the buzzer.

Component List

1. Relay module 5v-30v

   • Pins: common contact, normally open, normally closed, trigger, V-, V+
   • Description: A relay module used to control the buzzer based on the signal from the PIR sensor.
   • Purpose in Circuit: Acts as a switch to control the buzzer.

2. PIR Motion Sensor (Wokwi Compatible)

   • Pins: VCC, OUT, GND
   • Description: A motion sensor that detects infrared radiation from moving objects.
   • Purpose in Circuit: Detects motion and sends a signal to the relay module.

3. Buzzer

   • Pins: PIN, GND
   • Description: An audio signaling device.
   • Purpose in Circuit: Emits sound when activated by the relay module.

4. 9V battery

   • Pins: +, -
   • Description: A power source for the circuit.
   • Purpose in Circuit: Provides power to the relay module, PIR sensor, and buzzer.

Wiring Details

Relay module 5v-30v

• common contact is connected to the positive terminal (+) of the first 9V battery.
• normally open is connected to the PIN of the buzzer.
• trigger is connected to the OUT pin of the PIR Motion Sensor.
• V- is connected to the GND pin of the PIR Motion Sensor and the negative terminal (-) of the second 9V battery.
• V+ is connected to the VCC pin of the PIR Motion Sensor and the positive terminal (+) of the second 9V battery.

PIR Motion Sensor (Wokwi Compatible)

• VCC is connected to the V+ pin of the relay module and the positive terminal (+) of the second 9V battery.
• OUT is connected to the trigger pin of the relay module.
• GND is connected to the V- pin of the relay module and the negative terminal (-) of the second 9V battery.

Buzzer

• PIN is connected to the normally open pin of the relay module.
• GND is connected to the negative terminal (-) of the first 9V battery.

9V battery (First)

• + is connected to the common contact pin of the relay module.
• - is connected to the GND pin of the buzzer.

9V battery (Second)

• + is connected to the V+ pin of the relay module and the VCC pin of the PIR Motion Sensor.
• - is connected to the V- pin of the relay module and the GND pin of the PIR Motion Sensor.

Code

There is no code provided for this circuit.