Digital clock using MM5314

Respected Sir,

I am interested to do a Digital clock for our office.i saw your MM5314 Digital clock circuit.
but seven segment led display which is in small size (2mm) bcse our reception is big one.so plse guide me this clock with some bigger size seven segment display (4mm). can i use this same circuit for bigger size seven segment also(4mm).
Is MM5314 has enough power driving capacity.
Kindly give your ideas

Regards
tamilselvi arangasamy

Dear friends

guide me in this

regards
tamilselvi

This fits into the classic buy vs build decision. Why would you want to build your own one of these? You can buy them from Radio Shack (assuming you are in the US) but online if you are not.
http://www.4alarmclocks.com/ladialcl.html or
http://www.clockstyle.com/largedisplayclocks.cfm or
http://www.amazon.com/Large-Display-Clock-Sper-Scientific/dp/B001EUETXE
54 US dollars for that one... I cant build something for 54 dollars myself in time and obtaining the parts so thats what I would do - just buy it.

however if you have to build something why not buy a kit and its 10 bucks more assembled
http://www.canakit.com/3-inch-display-digital-clock-kit-ck253-uk253.html

so there you are.. I would just buy one of the already assembled ones or buy the kit if you have to pick up a soldering iron which is sometimes more fun :-)

best regards

Kevin

the mm5314 is a versatile clock chip, however the down side is National (has been absorb by texas instruments) has stop production of that chip. you would be very lucky if can still acquire that. as to your query if you can use a bigger display, yes you can.

I made a clock using the MM5314 with 4 1" LEDs which I love. It only needed 1 additional IC for the segment driver. See projects.worsleyassociates.com "Big Green Clock"