MainRegistrationLogin Electro-Hobby Wednesday, 21.10.2020, 13:45
  Circuits Welcome Guest | RSS



Total online: 1
Guests: 1
Users: 0

 Home » Timer » Digital alarm clock using PIC
Digital alarm clock using PIC    
digital alarm clockThis project describes a digital clock with alarm function. It uses a PIC16F877 microcontroller to generate an accurate 1 sec delay with Timer0 using Roman’s zero error method. The time is displayed in large size font on a 4×20 character LCD that uses HD44780 display driver. You can synchronize the time with your computer time through a serial port. 

The required power is provided through a 9 V wall adapter which is used to obtain a regulated +5 V power supply using a LM7805 IC. The microcontroller runs with a 20 MHz external clock. The backlight of LCD is driven by a PWM output from the microcontroller so that the back light intensity can be varied. The full software written in JAL is available to download.
Category: Timer | Views: 2632 |


Copyright MyCorp © 2020
Free web hostinguCoz