Digital Clock

Description:

This project is a clock that displays the time and date on seven segment led displays. Two buttons are used to set the time and date. The program takes care of changing the date and keeping track of leap years. I recommend all displays are purchased at the same time otherwise a difference in brightness may occur. The downloads below contain project documentation, circuit diagram and Hex code. The Hex code can be used to program the PIC without a compiler. The 'C' Program contains time compensation which corrects for differences in crystals etc. This should be used as you can change the value to match your project. My clock is now very accurate! Contact me for availability of the C program.

List of Parts:

Description

Quantity

Maplin Stock Code

Vero Strip Board

2 pc 100mm x 60mm

JP49D

PIC16F84A

1

VS87U

Dual Red LED Displays

5

WL27E

4028B 4-10 Decoder

1

QX17T

BC337

10

QB68Y

3.2768MHz Crystal

1

FY86T

10pf Capacitors

2

RA33L

100nf Capacitor

2

RA49D

1K0 Resistor

11

M1K

100R Resistor

10

M100R

22K Resistor

2

M22K

PCB Switch

2

KR88V

18Pin DIL Socket

1

HQ76H

16Pin DIL Socket

1

BL19V

Infra-Red Box 112x62x27

1

N70AL

Download:

Clock_84_c.zip (592 KB)

You will need to register (once only) for the code to unlock the program file

My projects are provided free for non-commercial use and are provided "as is" without warranty of any kind. I have taken every care to make sure the information presented is accurate and where code is reused to credit the original author. Please send me your comments or inform me of inaccuracies by clicking here. If you like any of my projects please consider making a donation.
 


Last Updated on 23 January 2011
 2011 Perry Andrews

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