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Author Topic: DIGITAL CLOCK  (Read 5924 times)

Offline elydjah

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DIGITAL CLOCK
« on: November 03, 2008, 12:55:54 AM »
mga kuya help aman po...penge ako ng schematic ng digital clock... :(
hirap po...
desperately needed lng po...
minutes and seconds lng aman po!
urgent sna
eto e-mail ko elai_carrillo@yahoo.com.ph

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DIGITAL CLOCK
« on: November 03, 2008, 12:55:54 AM »

Offline Kaizer03

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Re: DIGITAL CLOCK
« Reply #1 on: November 03, 2008, 02:31:54 AM »
 :o :o :o

please provide more information about this..

and also try to search the forum.. marami na pohng ganyan dito.. pero most of them uses MCU... paki elaborate po ang preferences nyo.. ^_^
Lend a hand for those who are in need!=)

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Re: DIGITAL CLOCK
« Reply #1 on: November 03, 2008, 02:31:54 AM »

Offline elydjah

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Re: DIGITAL CLOCK
« Reply #2 on: November 03, 2008, 11:51:16 PM »
yap npansin ko nga po...
ang need ko po kc un ngdidisplay ng minutes at seconds lng po...
kht schematic lng po...
d rest i can do n po...T.T

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Re: DIGITAL CLOCK
« Reply #2 on: November 03, 2008, 11:51:16 PM »

Offline ultrasonic™

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Re: DIGITAL CLOCK
« Reply #3 on: November 04, 2008, 01:45:58 AM »
try dis... try nyo nlng i-revise yung circuit... pra makabuo kau ng DIGITAL CLOCK

http://www.aaroncake.net/circuits/counter.asp

i highly recommended na TTL type na IC na pwde nyung gamitin is 74LS192 madali lng kasing gamitin, intindihin & den mas Chieper huh xa.. palitan nyo nlng yung 7490 sa diagram into 74192

e2 huh yung PIN CONFIGURATION nya pra my hint huh kau http://www.kpsec.freeuk.com/components/74series.htm#74192


base on ur ideas seconds & minutes lng kailangan nyo tama?
pa2no 2 magagawa?

e-visualize nyo nlng..
1st u need 2 do is contruct 4pcs. circuits gaya na nasa diagram den yung input na ga2mitin mu sa IC mu na 74192 is yung PIN5.. pra Count up huh yung counting nya..

4 d 1st circuits or yung una i mean yung mgsisilbing 1st digit ng SECONDS mu is dapat gani2
take note: always nkaground lge yung RESET mu (PIN14) pra pa2loy xa ngka-count..
kailangan mu ng CLOCK PULSER or MULTIVIBRATOR CIRCUITS http://www.kpsec.freeuk.com/555timer.htm#astable
nxt step is yung CARRY (PIN12) will be connected 2 d INPUT(PIN5) of d nxt Counter IC
anader hint huh pra ni huh xa lalampas sa #60 u need 2 do is... kailangan mung e-reset yung 2nd COUNTER IC mu... using basic LOGIC IC.... na mgsasaturate wen BINARY CODE of 0110 which is equivalent of #6 in decimal refers in the Q output of IC2 den the output will be connected to its own RESET PIN, it is also serves as ur INPUT siganl going 2 d 3rd COUNTER IC...
4 d nxt steps d same procedure will u do  ulit-ulitin nyo nlng


mdjo mahirap intindihin noh?  ???
pro im xur matototo ka jejejejeje


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Re: DIGITAL CLOCK
« Reply #3 on: November 04, 2008, 01:45:58 AM »

Offline Admin

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Re: DIGITAL CLOCK
« Reply #4 on: November 04, 2008, 08:10:44 AM »
also try this one.. it displays hour, minutes and seconds.. let us know kung ano pa kelangan mo or if you need some help sa troubleshooting and parts supplier ;D ..


http://users.otenet.gr/~athsam/samgordon_clock_eng.htm

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Re: DIGITAL CLOCK
« Reply #4 on: November 04, 2008, 08:10:44 AM »

Offline zer0w1ng

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Re: DIGITAL CLOCK
« Reply #5 on: November 04, 2008, 08:17:04 AM »
I made one using proteus.  This is my first try with proteus simulation.
See here 24-Hour Digital Clock Using Glue Logic Gates complete with the simulation and schematic file.
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Offline RaffT

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Re: DIGITAL CLOCK
« Reply #6 on: November 04, 2008, 09:25:21 AM »
let us know kung ano pa kelangan mo or if you need some help sa troubleshooting and parts supplier ;D ..



boss, parts supplier ka rin ba???  :o

if so, anu meron mo?
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Offline RaffT

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Re: DIGITAL CLOCK
« Reply #7 on: November 04, 2008, 09:43:41 AM »
I made one using proteus.  This is my first try with proteus simulation.
See here 24-Hour Digital Clock Using Glue Logic Gates complete with the simulation and schematic file.

boss,

 nice one   :D kala ko stopwatch.mabilis eh... hehehe all it needs now is a 1Hz timebase clock/gen

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Offline Redskin

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Re: DIGITAL CLOCK
« Reply #8 on: November 04, 2008, 10:04:54 AM »
actually it will need a 1min clock gen as it is a 24 hour clock if 1hz gen is use you will get 24 min ;D

Offline ultrasonic™

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Re: DIGITAL CLOCK
« Reply #9 on: November 05, 2008, 10:02:38 AM »
yan ang dami tiyak maka2tulong yan lahat sau....    ANalyzing nlng huh ang kailangan nyo hehehehee ::)

 :)  ;)  :D  ;D          TIPs? try nyo muna sa BREADBOARD  ;D
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Offline RaffT

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Re: DIGITAL CLOCK
« Reply #10 on: November 05, 2008, 10:05:00 AM »
^^will need 2 clock sources... 1 for the REALTIME and the other to SET THE TIME...  ;) :D
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Offline elydjah

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Re: DIGITAL CLOCK
« Reply #11 on: November 07, 2008, 12:35:08 AM »
maraming salamat!!!!

Offline ultrasonic™

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Re: DIGITAL CLOCK
« Reply #12 on: November 15, 2008, 10:59:08 PM »
cnxa na hah if medjo natagalan..... BZ huh kc eh...!!!!!!

try nyo nlng huh e2 sa Bread Board


hope na sana maka2long....


http://img219.imageshack.us/my.php?image=digitalclock1fz6.jpg
http://img385.imageshack.us/my.php?image=digitalclock2jl8.jpg




http://img362.imageshack.us/my.php?image=digitalclockfd1.jpg


 :)  ;)  :D  ;D               ::)  :P   :-X  :-*
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Offline mr.Electro

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Re: DIGITAL CLOCK
« Reply #13 on: February 22, 2009, 08:15:31 PM »
@ ultrasonic

bro sinubukan ko yung circuit na yan sa multisim...bat ayaw gumana...pag play ko on lahat ng led at hindi mag change ang display ng 7 segment per second...sinunod ko naman yung nakalagay sa schematic pati yung values..ano problema nito....

at papaano ba mag simulate ng counters/timers on multisim

Offline ultrasonic™

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Re: DIGITAL CLOCK
« Reply #14 on: February 25, 2009, 09:43:25 PM »
cnxa na hah now lng aku nkarepz   BZ eh...    ;D  ;D


try to prove muna if yung clock pulser nyo is stimulated nah....  dapat normal lng huh...


how to prove it?   first u need to connect a LED on the pin 3 of ur 555 timer to monitor, mas madali lng kasi malaman kng tama na ang clock pulse na binibigay ng 555 timer mu...    dapat kasi  normal seconds counting lng yung blinking nya....  pg hindi ngbliblink   meaning my problem yung  clock multivibrator circuits nyo
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Offline mr.Electro

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Re: DIGITAL CLOCK
« Reply #15 on: February 25, 2009, 09:54:33 PM »
@ ultrasonic

bro sinubukan ko yung circuit na yan sa multisim...bat ayaw gumana...pag play ko on lahat ng led at hindi mag change ang display ng 7 segment per second...sinunod ko naman yung nakalagay sa schematic pati yung values..ano problema nito....

at papaano ba mag simulate ng counters/timers on multisim

hindi pa yan dahil mahina ang simulation speed.. i mean umabot nlng ako sa 5 minutes na kahihintay ngunit 1 seconds palang elapsed time sa Trans

Offline ultrasonic™

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Re: DIGITAL CLOCK
« Reply #16 on: February 25, 2009, 11:31:06 PM »
hindi pa yan dahil mahina ang simulation speed.. i mean umabot nlng ako sa 5 minutes na kahihintay ngunit 1 seconds palang elapsed time sa Trans


wat do u mean?    hndi huh ba ngk-carry yung  1st digit nyu to nxt digit??    ???  ???    or       ngka-count xa maliban lng hndi xa normal counting  ???
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Offline akhen

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Re: DIGITAL CLOCK
« Reply #17 on: February 26, 2009, 12:21:14 AM »
24 hrs digital clock including 1Hz counter:

http://www.geocities.com/iyung_w/files/24hrs_clock.pdf

Offline mr.Electro

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Re: DIGITAL CLOCK
« Reply #18 on: February 26, 2009, 07:05:36 PM »
hindi talaga siya nag ka-count sa 7 segment display.... pag play ko, ay naka on lahat ng segments pero ayaw mag change ng display....sinunod ko naman yung ibat ibang circuits example for this pero ayaw pa rin

Offline ultrasonic™

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Re: DIGITAL CLOCK
« Reply #19 on: February 27, 2009, 12:10:53 AM »
bro  ng-gegenerate ba yung clock pulser nyo?       nk-ground ba ang dapat nk-ground at ska  yung CLEAR pin ng counter ic nyo...?

bro wat skul ka pumapasok ???    bka malapit lng tayo...   Davao area ka?   :'(  :'(  :'(
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Re: DIGITAL CLOCK
« Reply #19 on: February 27, 2009, 12:10:53 AM »

 

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