Good 555 timer tutorial.

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It would be somewhat easier to make BEAM Bots and stuff like that with it, seeing as it has long leads on it
 
Nice Tutorial

Hi,its very nice tutorial i really appreciate that link and Bill whats so special about Round Packaged 555?
 
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Does anyone have a pic of the round 555 package?

I just did a google image search and could not find one.

?
 
Nope sorry, not off-hand. It looks like a metal can with an 8-pin DIN type pattern.

-BaC
I will look around, but I am not sure if I will get anything.

Nicksan said:
Does anyone have a pic of the round 555 package?

I just did a google image search and could not find one.

?
Click to expand...
 
I bet they're worth a bit of money.

I've got some metal can µA741s but I've never seen a metal can NE555 before.
 
I have build a circuit (shown in the attachment) from one of the tutorials above and am now playing around with the timings by changing the values of R1 and R2. What I want ideally is a short on time (say 1 second or less) and a long off time (say 5 seconds or more). But at the moment I seem to only be able to increase or decrease them both - any ideas?
 

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