This document describes a smart lighting system using Internet of Things (IoT) that can conserve energy. It uses an Arduino, light dependent resistor (LDR), infrared sensor, LED, and ESP8266 module. The LDR detects light levels and the infrared sensor detects motion. The ESP8266 connects to WiFi and the Arduino controls the LED lights based on inputs from the LDR and infrared sensor to only turn on the lights when needed, saving energy compared to traditional always-on street lights. This smart lighting system allows for automatic switching of street lights based on available daylight and presence of people.

1. Smart Lighting using IOT
By:
Srikant Chandan 12
Soham Channa 13
Abhinu Paika 58
Keul Patil 61

2. Smart Lighting
• Smart lighting is a technology mainly
designed to conserve energy
• It basically involves use of high efficiency
controls and machines based on conditions
like presence of people in an area at that
time,availability of daylight.

3. Disadvantages of the current smart lighting system
• Manual switching off/on of street lights
• More energy consumption
• High expense
• More manpower

4. Model of smart light using arduino and devices
The components used were
• LDR Input
• IR sensor
• LED
• ESP8266

5. LDR
A Light dependent resistor (LDR) alsotermed as a
photoresistor is adevice whose resistivity factor is
a function of the electromagnetic radiation.Hence,
they are light sensitive devices which are similar to
that of humaneyes. They are also named as
photoconductors, conductive cells or simply
photocells.

6. LDR and Arduino

7. IR Sensor
An infrared sensor is an electronic instrument that
is used to sense certaincharacteristics of its
surroundings by either emitting and/or
detectinginfrared radiation. It is also capable of
measuring heat of an object anddetecting motion.

8. LED
Alight-emitting diode (LED) is a junction diode,
which emits light when activated. When we apply
voltage across its leads, electrons are able
torecombine with holes within the LED, releasing
energy in the form of photonswhich gives the light.

9. ESP8266
ESP8266 is Wi-Fi enabled system on chip (SoC) module developedby Espressif
system. It is mostly used for development of IoT (Internet of Things) embedded
applications.
ESP8266 comes with capabilities of:
• 2.4 GHz Wi-Fi (802.11 b/g/n, supporting WPA/WPA2)
• General purpose input/output (16 GPIO)
• Inter-itegrated circuit (I²C) serial communication protocol
• Analog-to-digital conversion (10-bit ADC)
• Serial peripheral interface (SPI) serial communication protocol
• I²S (inter-IC sound) interfaces with DMA (direct memory access) (sharing pins with
GPIO)
• UART (on dedicated pins, plus a transmit-only UART can be enabled on GPIO2)
• Pulse-width modulation (PWM)

10. ESP8266-01 Module Pin Description
To communicate with the ESP8266 module we need a
ESP8266-01 module pin. Its details are given below:
• 3V3: - 3.3 V Power Pin.
• GND: - Ground Pin.
• RST: - Active Low Reset Pin.
• EN: - Active High Enable Pin.
• TX: - Serial Transmit Pin of UART.
• RX: - Serial Receive Pin of UART.