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STREET LIGHT AUTOMATION USING IOT
This project involves the construction of an automated street light model that switches ON / OFF automatically as the ambient light decreases/increases respectively using a light dependant resistor (LDR).
An automated lighting system is always more advantageous when in comparison with the traditional lighting system as it not only reduces manpower but also consumes less power and electricity.
Since it is quick and completely automated, it also ensures safety for residents/pedestrians from any unprecedented events and prevent mishaps.
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COMPONENTS
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Arduino Uno
Arduino Uno is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53-R0), a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.
CONNECTION SCHEMATIC
ARDUINO UNO LDR
5V to Vcc
GND to GND
A0 to A0
ARDUINO UNO ESP-8266 WIFI MODULE
pin 3 to TX
pin 4 to RX
3.3V to VCC
3.3V to CH_PD
GND to GND
ARDUINO UNO RELAY DRIVER MODULE
pin 8 to R1
5V to R2
GND to GND
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In this project, we use an LDR to detect the presence of light/sunlight in our surroundings. The LDR is a high resistance semiconductor whose resistance decreases as light increases and vise versa. We program the microcontroller to sense the fluctuations in these readings and control the light accordingly.
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Programming logic
Read data from LDR using analog read and use map function to map the values from 0,1023 to 0,100 for more readability.
Activate light based on received sensor data.
Connect and send AT commands to esp-8266.
Send relevant data to the ThingSpeak API via WiFi.
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STREET LIGHT 2.jpeg
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