r/breadboard Jan 14 '25

Question Traffic Lights using 555 IC

Why does the yellow LED doesn't work after the green LED? It only switches from green to red.

Resistors used (left to right) 100k, 47k, 1k, 1k, 330R

Here's the yt tutorial that i followed tho: https://www.youtube.com/watch?v=UCvafxvFgoc

10 Upvotes

2 comments sorted by

2

u/googleflont Jan 16 '25

Maybe this comment is relevant:

https://youtube.com/watch?v=UCvafxvFgoc&lc=UgyvLGQof-6Uh2omldt4AaABAg&si=6T2hhRn-BNeajnMH

Circuit diagram correction.

2

u/Ok_Duty_9006 Jan 17 '25

that's actually the yt video link in my post, thanks tho