BASIC 24 SECOND SHOT CLOCK

by Digitap Fri Sep 03, 2010 6:16 pm

Posted by ultrasonic™ on October 12, 2009 at 7:51pm

this basic circuit serve as a simple 24 shot clock circuit using TTL type ic

CIRCUIT DIAGRAM:

TAKENOTE:

To start in 24 seconds; 24s LOAD SW and Reset SW should be push simultaneously. If not, the count will start in 99. Pulse input can be connected to 555 astable multivibrator but must be calibrated for real time clock. The PAUSE SW must have a Switch Debouncer so that the counter will count normal when counting is paused and then turn-on.

When the count reach 00, the NOR gate will have an output of logic1 that will turn on the two transistor. The buzzer will rung and light will turn on. The two transistors are continuously turn-on not until LOAD SW and Reset SW is push. All have a +5v power supply.

by ace_1989 Sun Feb 05, 2012 3:59 pm

wala na photo Smile

by ultrasonic™ Mon Feb 06, 2012 7:23 pm

nwala nga.. na washout yan nung ngpalit ng database ang friendster

by ultrasonic™ Sat Feb 22, 2014 4:23 pm

re upload ko lng to... my nangangailangan kasi

BASIC 24 SECOND SHOT CLOCK 24sshotclock_zps94db51d4

by ultrasonic™ Sat Feb 22, 2014 7:35 pm

eto nmn ang source ng pulse... Astable Multivibrator

BASIC 24 SECOND SHOT CLOCK LM555_Multivibrator_zpsfc4cd6c2

NOTE: nababago ang real time clock based sa voltage source nyo...

by ultrasonic™ Sun Mar 02, 2014 6:56 pm

24 shot clock TTL

NOTE: e print nyu na naka mirror ang pcb clad

OT: @jade di ko ma resent sa email at fb nyu kasi bagal ng ISP ko ngyon
kya pa isa isa nlng. DL nyu nlng dito

by PIEZO Tue Mar 11, 2014 10:43 am

ultrasonic™ wrote:24 shot clock TTL

NOTE: e print nyu na naka mirror ang pcb clad

OT: @jade di ko ma resent sa email at fb nyu kasi bagal ng ISP ko ngyon
kya pa isa isa nlng. DL nyu nlng dito

Sir, i didn't see any circuit to stop the 00 ?

by Hertz Wed Mar 12, 2014 6:53 pm

siguradong Off board yan Sir lol!

by gakosijade Wed Mar 12, 2014 8:26 pm

sir ang problem lng tlaga namin sir is ang pag trap ng "00" kasi pag mag "00" na sya next count is"99" how can we trap na mag steady nalang sya ng zero. . kung ndi gagamit ng 7408 na ic ano ang alternative way?

by gakosijade Wed Mar 12, 2014 8:30 pm

4078 pla sir hindi 7408

by Hertz Fri Mar 14, 2014 7:46 pm

kung components parts availability ang issue dyan ay gumawa na lang kayo from basic logic. add lang ng add para dumami ang inputs

BASIC 24 SECOND SHOT CLOCK Shotclockreset_zps2b7ee00e

BASIC 24 SECOND SHOT CLOCK Shotclockreset_zps2b7ee00e

by Hertz Fri Mar 14, 2014 7:47 pm

sundan niyo ang first diagram na unang binigay ni Sir

by gakosijade Fri Mar 14, 2014 9:50 pm

sir parang kulang pa po cguro ng isang 74LS32 dbuh po 4 input lahat A1 B1 C1 D1 at A2 B2 C2 D2 at isa na 74LS27 am i right po sir?

by gakosijade Fri Mar 14, 2014 10:02 pm

QA1 QB1 QC1 QD1 and QA2 QB2 QC2 QD2 pla po sir ano po ang sequence ng adding po?

by Hertz Sat Mar 15, 2014 11:20 am

pwede na ang 6 inputs dyan. u1a para sa parteng 2
u1b at u1c naman para sa parteng 4

ito ang whole logic dyan. mag to turn On lang ang Reset pag naka Zero lahat ng inputs

ito naman ang sequence dyan. sa pag pindot ng Load mag di display yan ng 24 at mag ka countdown pag pinindot ang Pulse
hanggang mag zero lahat

kaya pwede na ang 2 inputs sa parteng 2. dahil ang i i scan niya lang ay 2,1, at 0

sa parteng 4 naman ay ma i i scan niya ang 4,3,2,1,0,9,8,7,6,5 at balik sa 4

by gakosijade Sat Mar 15, 2014 5:09 pm

master magandang hapon kung walang po available na 74LS27 na IC pwd po buh na ordinary na logic gates ang gamitin? combination of 7404 and 7432 na IC?

by Hertz Sat Mar 15, 2014 5:57 pm

gakosijade wrote:master magandang hapon kung walang po available na 74LS27 na IC pwd po buh na ordinary na logic gates ang gamitin? combination of 7404 and 7432 na IC?

yes, pwedeng pwede

by gakosijade Sat Mar 15, 2014 6:39 pm

tnx so much master

by Hertz Sat Mar 15, 2014 6:52 pm

wag kalimutan ang supply ng bawat ic. pin14 at pin7

by ultrasonic™ Tue Mar 25, 2014 4:15 pm

pa ot:

tnx hertz. pg guide sa knila ^_^

@sis jade.. sori nwala ako ng almost 2 weeks.. nwlan kasi ako ng kuryente... sanay ntapoz nyu ang projz nyu..

by Digitap Mon Apr 07, 2014 3:36 pm

ultrasonic™ wrote:
24 shot clock TTL

2005 mo pa to ginawa sir?

by Digitap Mon Apr 07, 2014 4:02 pm

may comment lang ako sa load switch. iba kasi ang nasa fourth post at sixth post mo sir.
iyong pangalawang post mo dapat ang kanilang dapat sundan. kong saan ang Load Pin ng 192 ay naka pull up na.

BASIC 24 SECOND SHOT CLOCK LOADsw_zpsa6a3e3a9

BASIC 24 SECOND SHOT CLOCK LOADsw_zpsa6a3e3a9

may data table din naman sa datasheet para maconfigure ng tama

BASIC 24 SECOND SHOT CLOCK 74192_LOADactivelow_zps3415e511

sa real clock pulse. pwede gamitin ang Wristwatches

by ultrasonic™ Thu Apr 10, 2014 4:24 pm

Mylene wrote:2005 mo pa to ginawa sir?

hmmppfff di ko na maalaala princess... tagal na kasi ^_^

+1 pala for adding info

by Hertz Sat Apr 12, 2014 4:11 pm

Mylene wrote:sa real clock pulse. pwede gamitin ang Wristwatches

puede

by Digitap Sat Apr 19, 2014 11:36 am

thanks sa point sir

by Sponsored content

BASIC 24 SECOND SHOT CLOCK

BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK

Re: BASIC 24 SECOND SHOT CLOCK