RP236
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Intelligent Automatic Podium Light Controller
TECHNICAL SPECIFICATIONS:
Title of the project
:
Intelligent Automatic Podium Light Controller Using
Domain
:
Embedded System Design
Software
:
Python Programming,Linux Arch
Microcontroller
:
BCM2835
Power Supply
:
+5V, 1A Regulated Power Supply
Display
:
16x2 LCD
Sensor
:
LDR
ADC
:
1
Buzzer
:
1
ULN Driver
:
2803
LCD
:
HD44780 16-character, 2-line (16X2)
Developed By
:
M/S Wine Yard Technologies
Ameerpet,
Abstract:
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040 – 6464 6363, 6625 6695, 888 5555 212
ARM11 based Raspberrypi.
RP236
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Intelligent automatic podium light controller is an innovative idea. In this project, three level
power saving LED array light is used. An IR transmitter – receiver unit is used to detect the
presence of the speaker / any other person. If a person comes nearer to the podium to speak,
immediately the IR sensor senses the presence of the person, and immediately it sends a signal to
the MCU. An LDR is interfaced to the microcontroller through ADC. It senses the lighting
condition of the surroundings of the podium, and according to that the controller switches on the
LED light array. Three arrays will be switched on in dim lighting condition. Only one or two
An NPN transistor is used to drive the LED array. This transistor is configured in common
emitter configuration. 16 X 2 LCD is used to display the status of lighting condition and status of
LED light array. A preset is connected to control the contrast of the display.
The Raspberry Pi is a credit-card-sized single-board computer developed in the UK by
the Raspberry Pi Foundation . The Raspberry Pi has a Broadcom BCM2835 system on a
chip which includes an ARM1176JZF 700 MHz processor Video Core IV GPU and was originally
shipped with 256 megabytes of RAM, later Upgraded to 512 MB. It does not include a builtinhard disk or solid-state drive, but Uses an SD card for booting and long-term storage.
This project uses regulated 5V, 1A power supply. 7805 three terminal voltage regulator is used
for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of
secondary of 230/12V step down transformer
Block Diagram:
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040 – 6464 6363, 6625 6695, 888 5555 212
LED light arrays will be switched on in bright condition.
Contrast
RP236
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control
LDR
16 X 2 LCD
ADC
LED Driver
circuit
High bright
LED array 1
LED Driver
circuit
High bright
LED array 2
LED Driver
circuit
High bright
LED array 3
BCM2835
IR Receiver
IR
Transmitter
Step
down
T/F
Bridge
Rectifier
Filter
Circuit
Regulator
Power Supply to all blocks
Hyderabad: Tarakarama Estates, 2nd Left Lane – Opp. RS Brothers, Ameerpet, Hyderabad-500073
Vijayawada: 4th Floor, White House, Opp. All India Radio, MG Road, Vijayawada-520010
www.WineYard.in Ph: 040 – 6464 6363, 6625 6695, 888 5555 212
ARM11