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Simple 555 LED flasher

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schizo18

New Member
I'm trying to build a 555 circuit that just simply flashes an LED. The schematic I'm using is the one you can find all over the internet. Just a simple Astable 555 circuit.

My problem is that mine worked on the breadboard, but when I went to actually solder it, I noticed that I had pins 3 and 6 shorted instead of 2 and 6. So I moved the wire and it didn't work when 2 and 6 were connected, but it does still work with 3 and 6 connected. I'm confused why this works this way....any ideas?
 

EN0

Member
Why don't you provide a picture (particularily in PNG format) and also a shematic. We'll be able to understand your question better.
 

schizo18

New Member
I went to go hook my circuit back up so I could take a picture and it actually seems to work as intended now. I guess that's the power of posting.
 

EN0

Member
So you're saying that originally pins three and six were shorted but they weren't supposed to be (you unintentially did it, right?)? So you disconnected them and shorted pins two and six (the way it's supposed to be). In addition, you're saying that it worked when pins three and six were connected, even though they weren't supposed to be? What was connected to pins two and six?

A schematic is worth more than a thousand words; please post the schematic you used.
 

schizo18

New Member
My schematic was:
9027-180px-555_Astable_Diagram.svg.png


All I did differently was short pins 3 and 6 instead of 2 and 6....so essentially pin 2 was still a trigger, but pin 6 was shorted to the output.

When I fixed it and connected pins 2 and 6, I couldn't get a flash. Now It's working the way it's supposed to though.
 

EN0

Member
I suppose your method of shorting pins three and six brought feedback to the input; therefore it would still work. Not as well though, but it would work.
 
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