clock using LED - Electronic Circuits Projects Diagrams Free

fernnie · 7th April 2004, 08:33 AM

i want to do a normal clock(analog clock, not the digital clock) using LED, who know how to do or who got this circuit?

Russlk · 7th April 2004, 11:00 PM

First, you need 60 LEDs in a circle to mark the minutes. I would use 48 red ones and 12 yellow to mark the 5 minutes. Inside of that circle (or outside) 12 LEDs to mark the hours. The power line frequency divided by 3600 will provide a pulse every minute which can clock a one 0f 10 decoder. You will need 6 of them for 60 minutes, and two that are clocked by the output of the minute decoders to mark the hours.

Russlk · 12th April 2004, 04:35 PM

I discovered that my original idea was too complex, shift registers are easier to do. I only posted a partial block diagram because you will not learn much if I do the whole design.

Hurdy · 19th April 2004, 06:02 PM

I dont know if this would be useful to you, but whilst making our final year Electronic project in college my friend made a digital cloak.
He made it so that there was a two 7 segment displays in the middle counting the minutes, whilst having 12 LEDS in a circle around the 7 segment displays displaying the hours.
I could obtain the circuit diagrams for you if this is of interest you.
I the circuit he made did work, just to give you certanty of its reliability.

Private message me back if you so wish this information.

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7th April 2004, 08:33 AM	(permalink)
fernnie	clock using LED i want to do a normal clock(analog clock, not the digital clock) using LED, who know how to do or who got this circuit? __________________ FeRnNiE®

7th April 2004, 11:00 PM	(permalink)
Russlk	First, you need 60 LEDs in a circle to mark the minutes. I would use 48 red ones and 12 yellow to mark the 5 minutes. Inside of that circle (or outside) 12 LEDs to mark the hours. The power line frequency divided by 3600 will provide a pulse every minute which can clock a one 0f 10 decoder. You will need 6 of them for 60 minutes, and two that are clocked by the output of the minute decoders to mark the hours. __________________ see my website: www.geocities.com/russlk

19th April 2004, 06:02 PM	(permalink)
Hurdy	I dont know if this would be useful to you, but whilst making our final year Electronic project in college my friend made a digital cloak. He made it so that there was a two 7 segment displays in the middle counting the minutes, whilst having 12 LEDS in a circle around the 7 segment displays displaying the hours. I could obtain the circuit diagrams for you if this is of interest you. I the circuit he made did work, just to give you certanty of its reliability. Private message me back if you so wish this information. __________________ Robert Hurd Electronic Student