Circuit Documentation

Summary

This circuit is designed to detect rain using a YL-83 Rain Sensor and provide visual and auditory alerts through an LED and a Piezo Speaker. The circuit is powered by a 9V battery and utilizes an NPN transistor to control the LED and Piezo Speaker based on the rain sensor's output.

Component List

1. 9V Battery

   • Description: Provides power to the circuit.
   • Pins: +, -

2. YL-83 Rain Sensor - Detection Board

   • Description: Detects the presence of rain.
   • Pins: POS, NEG

3. LED: Two Pin (red)

   • Description: Provides a visual indication when rain is detected.
   • Pins: cathode, anode

4. NPN Transistor (EBC)

   • Description: Acts as a switch to control the LED and Piezo Speaker based on the rain sensor's output.
   • Pins: emitter, base, collector

5. Piezo Speaker

   • Description: Provides an auditory alert when rain is detected.
   • Pins: pin1, pin2

Wiring Details

9V Battery

• Pin - is connected to:

  • cathode of the LED
  • pin1 of the Piezo Speaker

• Pin + is connected to:

  • POS of the YL-83 Rain Sensor
  • emitter of the NPN Transistor

YL-83 Rain Sensor - Detection Board

• Pin POS is connected to:

  • + of the 9V Battery
  • emitter of the NPN Transistor

• Pin NEG is connected to:

  • base of the NPN Transistor

LED: Two Pin (red)

• Pin cathode is connected to:

  • - of the 9V Battery
  • pin1 of the Piezo Speaker

• Pin anode is connected to:

  • collector of the NPN Transistor
  • pin2 of the Piezo Speaker

NPN Transistor (EBC)

• Pin emitter is connected to:

  • POS of the YL-83 Rain Sensor
  • + of the 9V Battery

• Pin base is connected to:

  • NEG of the YL-83 Rain Sensor

• Pin collector is connected to:

  • anode of the LED
  • pin2 of the Piezo Speaker

Piezo Speaker

• Pin pin1 is connected to:

  • cathode of the LED
  • - of the 9V Battery

• Pin pin2 is connected to:

  • collector of the NPN Transistor
  • anode of the LED

Code

No microcontroller code is provided for this circuit.