Arduino UNO-Based Smart Street Light Control with LDR and PIR Sensors
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Circuit Documentation
Summary
This project is a street light control system that uses an Arduino UNO microcontroller to manage street lights based on inputs from LDR (Light Dependent Resistor) and PIR (Passive Infrared) sensors. The LDR sensor determines whether it is day or night, and the PIR sensors detect motion. At night, three LEDs are turned on via a transistor switch, and an additional LED is turned on when motion is detected.
Component List
Arduino UNO
- Description: Microcontroller board based on the ATmega328P.
- Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0
PIR Sensor
- Description: Passive Infrared sensor for motion detection.
- Pins: VDD, SIG, GND
LED: Two Pin (red)
- Description: Red LED with two pins.
- Pins: cathode, anode
LED: Two Pin (blue)
- Description: Blue LED with two pins.
- Pins: cathode, anode
Resistor
- Description: Resistor with a resistance of 200 Ohms.
- Pins: pin1, pin2
12v Battery
- Description: Power source for the circuit.
- Pins: -, +
NPN-Transistor
- Description: NPN transistor for switching.
- Pins: E, C, B
Photoresistor (LDR) Sensor (Wokwi Compatible)
- Description: Light Dependent Resistor sensor for detecting light levels.
- Pins: VCC, GND, DO, AO
Wiring Details
Arduino UNO
5V connected to:
- PIR sensor (VDD)
- PIR sensor (VDD)
- Photoresistor (LDR) Sensor (VCC)
GND connected to:
- PIR sensor (GND)
- Resistor (pin1)
- Photoresistor (LDR) Sensor (GND)
- Resistor (pin1)
- 12v Battery (-)
A5 connected to:
- Photoresistor (LDR) Sensor (AO)
D11 connected to:
- LED: Two Pin (red) (anode)
D10 connected to:
- LED: Two Pin (red) (anode)
D9 connected to:
- LED: Two Pin (red) (anode)
D8 connected to:
- Resistor (pin2)
D5 connected to:
- LED: Two Pin (red) (anode)
D4 connected to:
- PIR sensor (SIG)
D3 connected to:
- LED: Two Pin (blue) (anode)
D2 connected to:
- PIR sensor (SIG)
PIR Sensor
VDD connected to:
- Arduino UNO (5V)
GND connected to:
- Arduino UNO (GND)
SIG connected to:
- Arduino UNO (D2)
PIR Sensor
VDD connected to:
- Arduino UNO (5V)
GND connected to:
- Arduino UNO (GND)
SIG connected to:
- Arduino UNO (D4)
LED: Two Pin (red)
anode connected to:
- Arduino UNO (D11)
cathode connected to:
- Resistor (pin1)
LED: Two Pin (red)
anode connected to:
- Arduino UNO (D10)
cathode connected to:
- Resistor (pin1)
LED: Two Pin (red)
anode connected to:
- Arduino UNO (D9)
cathode connected to:
- Resistor (pin1)
LED: Two Pin (red)
anode connected to:
- Arduino UNO (D5)
cathode connected to:
- Resistor (pin1)
LED: Two Pin (blue)
anode connected to:
- Arduino UNO (D3)
cathode connected to:
- Resistor (pin2)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (blue) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)
Resistor
pin1 connected to:
- Arduino UNO (GND)
pin2 connected to:
- LED: Two Pin (red) (cathode)