digital clock with alarm (12hours)

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striker_24

New Member

• Feb 14, 2009

• #1

Anyone has a schematic of digital clock with alarm (12hours with minutes and hours only) and the seconds must be represented by the LED between the minutes and hours?

By d way,the display of the output is thru 7-segment display..

Thanks u very much!


striker_24

 

Last edited: Feb 14, 2009

blueroomelectronics

Well-Known Member

• Feb 14, 2009

• #2

My Dragonfly kit could be programmed with an alarm.

 

S

striker_24

New Member

• Feb 14, 2009

• #3

blueroomelectronics said:

My Dragonfly kit could be programmed with an alarm.

Click to expand...

can u help me bud? thanks lot!

 

blueroomelectronics

Well-Known Member

• Feb 14, 2009

• #4

The entire schematic and example HH:MM:SS clock program are in the Dragonfly assembly manual on my site.

 

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striker_24

New Member

• Feb 14, 2009

• #5

can i hav the schematic of it mate?

also,do u hav it without "seconds"?

Thank u!

 

blueroomelectronics

Well-Known Member

• Feb 14, 2009

• #6

Yes, download the manual. It's free and you can build it with 4 digits if you like. It is a microcontroller based design.

 

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striker_24

New Member

• Feb 14, 2009

• #7

do u hav it mate by not using microcontroller design? since im not yet used with microcontroller..

 

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striker_24

New Member

• Feb 14, 2009

• #8

do u hav the style mate of a digital clock using TTL or any LOGIC GATES? thanks much!

 

blueroomelectronics

Well-Known Member

• Feb 14, 2009

• #9

Nope just a microcontroller one.

 

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striker_24

New Member

• Feb 14, 2009

• #10

ah,ok..

thanks anyway..


Anyone has this schematic? thanks lot to those who will help me..

striker_24

 

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striker_24

New Member

• Feb 16, 2009

• #11

anyone here?

Thanks lot!

 

arhi

Member

• Feb 16, 2009

• #12

dude, GOOGLE ...

ttl clock schematic - Google Search

returns schematic for what you need on first page in first few links (all first few links are what you need) ?!?!?!

https://www.electro-tech-online.com/custompdfs/2009/02/ttl_manual.pdf
http://www.geocities.com/iyung_w/files/24hrs_clock.pdf
https://www.electro-tech-online.com/threads/ttl-clock-with-7447-7490-and-7400-ics.25628/
https://www.electro-tech-online.com...l-clock-hour-minute-and-second-circuit.24627/
**broken link removed**

I spent less time on google to find all this links then you spent writing the "please give me solution for my school assignment"

 

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striker_24

New Member

• Mar 2, 2009

• #13

thanks for the links!

nwei,anyone can still post other links..

thank u!

 

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Chaerl

New Member

• Mar 2, 2009

• #14

This was actually my project during college on one of my subjects, just a minor project. You may need a decade counter, seven segment drivers, logic gates to reset back to 00 when mins and secs reach to 60 counts and when the hour reaches 13 or 24 counts. I'll try to design for you during my spare time.

 

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striker_24

New Member

• Mar 2, 2009

• #15

thanks lot!

hoping for it..

striker_24

 

C

chary_206

New Member

• Mar 2, 2009

• #16

230 volt to 2 volt

I would like to know how to convert the AC voltage 230 to DC 2 volt to light up the led bulb

 

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striker_24

New Member

• Mar 2, 2009

• #17

make ur own topic bud so that u will hav more replies..

 

C

Chaerl

New Member

• Mar 4, 2009

• #18

striker_24 said:

thanks lot!

hoping for it..

striker_24

Click to expand...

Hi,

I don't know if its working. just try it first and tell me what happened. We'll start from there. I try to simulate it but unfortunately, my orcad is not functioning.

View attachment sch.pdf

good luck,
chaerl

 

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striker_24

New Member

• Mar 5, 2009

• #19

thanks lot bud..

will try it..


striker_24

 

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striker_24

New Member

• Apr 25, 2009

• #20

any help again rgarding this? thanks!

 

Last edited: Apr 25, 2009