How can i build that? (Flasher)

[Kryten]

Well I Norway (my country) its legal to have flashers in Yellow. So im going to make them (i think)

 

[amando96]

If u use this schematic

**broken link removed**

ou will be able to Put one LED on while the other is off and vice versa. i put two Red LED's on while two green LED's are off, so it's kinda fun to try with, i modded this guy's 555 circuit

Using A 555 Timer Chip

i played with it for 10 minutes and then i had the new version i made my first mod

So try the Using A 555 Timer Chip one and then try mine.

Good luck

I actually named this circuit ''police car theme'' LOL

 

[audioguru]

If u use this schematic ...

With the supply voltage at the minimum for a 555 (4.5V) then it might stop working when the battery runs down a little.
The green LEDs will be extremely dim (only 1.1mA). The red LEDs will be dim (only 2.5mA).

 

[amando96]

SNIP*

they dont look dim at all, I use such high resistence resistors because i'm scared i'll burn the LED's...
But you can see the light pretty well...

 

[audioguru]

Most LEDs are spec'd at 20mA and have a max allowed continuous current of 30mA or 40mA.