An Intuitive Dusk-Dawn System Based on Microcontroller |
Author(s): |
| Zubaid Ahmed , LIET,HYDERABAD; Md Amjad Ali, LIET,HYDERABAD; Shaik Faisal Ahmed, LIET,HYDERABAD; Md Awais, LIET,HYDERABAD; Natha Dhanunjayarao, LIET,HYDERABAD |
Keywords: |
| Microcontroller 8051, Adc0808, Light Dependent Resistor (LDR) |
Abstract |
|
The Project Dusk dawn system using 89C51 Microcontroller is an interesting project which uses AT89C51 microcontroller as its brain. This project is very useful for commercial sign boards, advertising boards, street lights for automation lighting system. This system switches on the lights only in darkness. As it works with LDR sensor, no programming of timings and battery back-up is required. This is a simple, fit and forget system. ADC0808 is used to convert analog data delivered by Light dependent Resistor (LDR) into digital data. This ADC interfacing makes this project highly sensitive and user friendly. This project uses regulated 5V, 500mA power supply. Unregulated 12V DC is used for relay. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer. |
Other Details |
|
Paper ID: IJSRDV5I10190 Published in: Volume : 5, Issue : 1 Publication Date: 01/04/2017 Page(s): 288-291 |
Article Preview |
|
|
|
|
