Good 555 timer tutorial.

[MusicTech]

I also like ecelab.com/circuit-astable-555.htm when you get better it has formulas for finding the frequency of the square wave

 

[HiTech]

This is my favorite 555 timer tutorial:

Tony vanRoon's site from Univ. of Guelph is without a doubt the most colorful electronics site on the Internet! It's very pretty!

 

[BaCaRdi]

Ditto on that tut

Thought I had deja-vu for a moment. If I started searching on that Can part number again, I would have just walked away.....lol Email alerts can be confusing it seems..haha

-BaC

Tony vanRoon's site from Univ. of Guelph is without a doubt the most colorful electronics site on the Internet! It's very pretty!

 

[slapdash41]

thanks for the tutorials. really useful

 

[usif]

Tony vanRoon's site from Univ. of Guelph is without a doubt the most colorful electronics site on the Internet! It's very pretty!

Absolutely, it got me started with Digital electronics (I did a simple counter thingy, working with the 74LS47 and the 74LS90, with the ne555 providing the Astable)

 

[coldrush]

who needs a round 555 timer????? its 2008

 

[coldrush]

Nice one Usif, takes me back to my childhood, building binary up/down counters-to-7 segment displays, my mother would show off to her friends with my magical creations

 

[blueroomelectronics]

who needs a round 555 timer????? its 2008

Who needs a 555 now that microcontrollers are cheap.

 

[moghli_amateur]

thanks for sharing the info, i found it useful

 

[Hero999]

Who needs a 555 now that microcontrollers are cheap.

Last time I checked, the cheapest 555 is cheaper than the cheapest micro and can directly drive relays

If all you want to do is flash an LED, beep a piezo or turn a relay on for ten seconds a 555 is perfect. I wouldn't even consider a micro for something so basic, unless there are other requirements.

 

[alhoop]

Who needs a 555 now that microcontrollers are cheap.

Someone who doesn't have programming resources.
Al

 

[Hero999]

You'd have to be pretty silly to use an MCU if all you want is a 30 second timer relay or a flashing LED.

 

[blueroomelectronics]

You'd have to be pretty silly to use an MCU if all you want is a 30 second timer relay or a flashing LED.

It's anything beyond that where it gets complex for a simple 555.