Automatic control of light.

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.