How To Use The NE555 Timer

[@donaldbundy3499]

In the monostable operation, I see an issue with the switch. When closed it will short VCC to ground. Connection 2 of the switch needs to be moved to the other side of the pull up resistor. But the bread board circuit looks correct.

[@diamondglitter205]

I wish I read this comment earlier, I burned two buttons 😅

[@davidbrittenham4631]

Hmmm....I wonder why the circuit simulation s/w didn't catch that? Ah, I think I see why. The breadboard is right, it's just the schematic that is wrong.

[@davidsicking7514]

The typical bipolar Xx555 timer had an issue with high through current exasperated by stored base charge which required the large 10 uFd filter cap and emitted noise pulses into neighboring curcuits. The CMOS versions avoided this problem. The also worked wider range and lower power. They could not drive 200 ma but light a LED OK.

[@francisstudiosengineering]

Thank you for the interesting info :)

[@Wil_Bloodworth]

Beautifully done! What is the 3D breadboarding software you used to do this?

[@francisstudiosengineering]

It's called CRUMB, but I'm not sure if I can recommend it, because it's very limited and there is no update for a year now...

[@bigmanattitude7397]

I love crumb

[@zeeshangla]

Which software you are using ??

[@francisstudiosengineering]

Its called CRUMB but I must warn you: it's VERY limited so it isn't good for too much things. At least it's cheap.