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 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
LED's
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flab



Joined: Feb 13, 2012
Posts: 60
Location: Glasgow

PostPosted: Fri Jun 22, 2012 7:10 am    Post subject: LED's Reply with quote  Mark this post and the followings unread

ones more i want you to answer on leds problems
-every led i use to my modules outputs are connected -output-10kΩ-ground way and are working fine.
-wright now i rebuild a 4040 and a 4051 putting a -output-10kΩ-ground led arrange but i get an output mess. I tried smaller and bigger res. than 10kΩ but again i can hear the led to the outputs. Crying or Very sad
any ideas?
cheers
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JingleJoe



Joined: Nov 10, 2011
Posts: 878
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PostPosted: Fri Jun 22, 2012 8:34 am    Post subject: Re: LED's Reply with quote  Mark this post and the followings unread

flab wrote:

any ideas?
cheers

No, I am not sure what your problem is, what do you mean by "i can hear the led to the outputs"? That doesn't make sense Neutral

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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Fri Jun 22, 2012 9:45 am    Post subject: Reply with quote  Mark this post and the followings unread

do they light up at random, or not at all ?.
it could be that you have an unconnected input on the 4040/4051.

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Draal



Joined: May 18, 2010
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PostPosted: Fri Jun 22, 2012 1:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'll take a stab at it. For the 4051, I use just one resistor, a 10k because I use superbrite less, between pin 3 and pin 16. All the 4051's outs will work as expected.

Leds on the 4040 are on all the time once you hook a clock on them.
As far as hearing the leds, are you wiring up as diodes, as in diode mixing?

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flab



Joined: Feb 13, 2012
Posts: 60
Location: Glasgow

PostPosted: Sat Jun 23, 2012 10:21 am    Post subject: Reply with quote  Mark this post and the followings unread

i bought some superbrite leds today morning-
actually was quite simple- are working just fine without having any sound when are connecting to ground through a 10kΩ.
superbrite made the trick but are really expensive.
thank you people
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-minus-



Joined: Oct 26, 2008
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PostPosted: Sat Jun 23, 2012 1:18 pm    Post subject: Reply with quote  Mark this post and the followings unread

flab wrote:
but are really expensive.


you can buy them cheap on ebay:

http://www.ebay.com/itm/Pack-of-100-5mm-Clear-Amber-LEDs-Super-Bright-LED-/190681729295?pt=LH_DefaultDomain_0&hash=item2c6584490f#ht_3205wt_1189
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