DIY LED clock circuit? - UK Vintage Radio Repair and Restoration Discussion Forum

mole42uk · 27th Nov 2017, 5:14 pm

ISTR that, many years ago, one could buy a simple clock kit with an LED display.

I would like to find the clock chip and try one, it needs 0.56” 7-segment display and a local oscillator for use on a DC supply.

If I could also get a stopwatch function, that would be ideal.

Does this ring any bells?

G6Tanuki · 27th Nov 2017, 5:24 pm

See here: http://www.decodesystems.com/clock-ics.html

Ian - G4JQT · 27th Nov 2017, 5:27 pm

Have a look on ebay for "LED clock kits". There are some for less than £2 including post from China!

Ian

27th Nov 2017, 5:46 pm

Oh b***ger, G6 (thanks for the suggestion!!!) just ordered one from eBay for £1.77 including postage. I have no idea what I am going to do with it apart from making it and playing. These things take a few weeks to arrive so it is a surprise when it turns up, double the fun.

MALC SCOTT · 27th Nov 2017, 5:52 pm

I bought a couple of these Chinese clock kits. They work fine, but the PP3 battery does not last long, Malc.

mole42uk · 29th Nov 2017, 1:41 pm

Thanks all! I've ordered a couple of the Chinese kits. Now I'll wait and see if they do what I want...

Al (astral highway) · 29th Nov 2017, 2:32 pm

Quote:

Originally Posted by mole42uk

I've ordered a couple of the Chinese kits. Now I'll wait and see if they do what I want...

Hey Richard, I hope they do what you want! Just an idea, have you considered a Nixie tube version?

I made one myself years ago and then bought one in kit form a few years ago. The tubes are the small ex-Soviet types rather than the big orange ones but the clocks are pretty enough. You can buy kits from PV electronics.

https://www.pvelectronics.co.uk/inde...products_id=93

Just an idea!

MrBungle · 29th Nov 2017, 2:47 pm

Also look out for old advance frequency counters. They seem to appear on ebay regularly and the tubes and driver ICs are good. The rest, usually not worth saving.

27th Nov 2017, 5:14 pm	#1
mole42uk Nonode Join Date: Aug 2010 Location: Resolven, Wales; and Bristol, England Posts: 2,608	DIY LED clock circuit? ISTR that, many years ago, one could buy a simple clock kit with an LED display. I would like to find the clock chip and try one, it needs 0.56” 7-segment display and a local oscillator for use on a DC supply. If I could also get a stopwatch function, that would be ideal. Does this ring any bells? __________________ Richard Index: recursive loop: see recursive loop

27th Nov 2017, 5:24 pm	#2
G6Tanuki Dekatron Join Date: Apr 2012 Location: Wiltshire, UK. Posts: 13,998	Re: DIY LED clock circuit? See here: http://www.decodesystems.com/clock-ics.html

27th Nov 2017, 5:27 pm	#3
Ian - G4JQT Octode Join Date: Jun 2004 Location: Reading/Fakenham, UK. Posts: 1,323	Re: DIY LED clock circuit? Have a look on ebay for "LED clock kits". There are some for less than £2 including post from China! Ian

27th Nov 2017, 5:46 pm	#4
Guest Guest Posts: n/a	Re: DIY LED clock circuit? Oh b***ger, G6 (thanks for the suggestion!!!) just ordered one from eBay for £1.77 including postage. I have no idea what I am going to do with it apart from making it and playing. These things take a few weeks to arrive so it is a surprise when it turns up, double the fun.

27th Nov 2017, 5:52 pm	#5
MALC SCOTT Octode Join Date: Aug 2006 Location: Willington, County Durham, UK. Posts: 1,499	Re: DIY LED clock circuit? I bought a couple of these Chinese clock kits. They work fine, but the PP3 battery does not last long, Malc. __________________ Malc Scott

29th Nov 2017, 1:41 pm	#6
mole42uk Nonode Join Date: Aug 2010 Location: Resolven, Wales; and Bristol, England Posts: 2,608	Re: DIY LED clock circuit? Thanks all! I've ordered a couple of the Chinese kits. Now I'll wait and see if they do what I want... __________________ Richard Index: recursive loop: see recursive loop

29th Nov 2017, 2:47 pm	#8
MrBungle Dekatron Join Date: Jun 2016 Location: London, UK. Posts: 3,687	Re: DIY LED clock circuit? Also look out for old advance frequency counters. They seem to appear on ebay regularly and the tubes and driver ICs are good. The rest, usually not worth saving.