digital clock with alarm (12hours)

[striker_24]

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

 

[blueroomelectronics]

My Dragonfly kit could be programmed with an alarm.

 

[striker_24]

My Dragonfly kit could be programmed with an alarm.

can u help me bud? thanks lot!

 

[blueroomelectronics]

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

 

[striker_24]

can i hav the schematic of it mate?

also,do u hav it without "seconds"?

Thank u!

 

[blueroomelectronics]

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

 

[striker_24]

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

 

[striker_24]

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

 

[blueroomelectronics]

Nope just a microcontroller one.

 

[striker_24]

ah,ok..

thanks anyway..


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

striker_24

 

[striker_24]

anyone here?

Thanks lot!

 

[arhi]

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"

 

[striker_24]

thanks for the links!

nwei,anyone can still post other links..

thank u!

 

[Chaerl]

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.

 

[striker_24]

thanks lot!

hoping for it..

striker_24

 

[chary_206]

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

 

[striker_24]

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

 

[Chaerl]

thanks lot!

hoping for it..

striker_24

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

 

[striker_24]

thanks lot bud..

will try it..


striker_24

 

[striker_24]

any help again rgarding this? thanks!