how to make a 555 flash a led on for 1 second?

and flash off for 1 second too, like a car turn signal?
(i am trying to make a turn signal for a rc car project)

wkter6 years ago
Have a look at this page, it tells you everything you need to know: http://www.kpsec.freeuk.com/555timer.htm#astable If you use C1: 10uF, R2: 300k and R1: 30k it will make your LED will stay on for about 1,1 seconds, and then off for 1,1 seconds. Obviously a little slower than what you wanted, but it's near enough. Try experimenting with different values if you want to! Follow the schematic here: http://www.kpsec.freeuk.com/images/555ast.gif , and place your LED between the "output"-pin and GND.
zack247 (author)  wkter6 years ago
thanks, this really helped!