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 Message Boards » » 555 hysteretic oscillator build... Page [1]  
horrorshow
All American
695 Posts
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it's my first build on protoboard.

does everything in this diagram seem legit, cause all i'm getting is LEDs that light up and don't flash at any rate:

http://www.allaboutcircuits.com/vol_6/chpt_8/3.html

i may have fried something cause i hooked it up wrong once and there was a spark sound and a burnt smell. but everything is right now and the pentometer...it's like it isn't even there.

9/26/2012 2:33:51 PM

dtownral
Suspended
26632 Posts
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I'm betting that you fried something cause u hooked it up wrong once and there was a spark sound and a burnt smell.

9/26/2012 2:38:33 PM

horrorshow
All American
695 Posts
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s'what i'm thinking. i think i'll replace the 555 and the oscillator. capacitor should be ok right?

9/26/2012 2:39:44 PM

Arab13
Art Vandelay
45180 Posts
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You might want to check it. Multimeter is your friend.

10/4/2012 1:57:29 PM

BigMan157
no u
103354 Posts
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make sure your leds and your caps are in the right direction too

10/4/2012 2:23:15 PM

 Message Boards » Tech Talk » 555 hysteretic oscillator build... Page [1]  
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