Step 1: Materials

What you will need:
1] 555 timer
2] 1k ohm resistor x2
3] 100 ohm resistor
4] led{any color i used a green}
5] capacitor [depending on the blinking rate. see next step}
6] circuit board
7] usb male connector
8] 555 timer holder {whatever it is called}

Step 2: The capacitor

you can use any capacitor in the range of 10uf  to 1000uf depending upon the blinking speed.
if you take a capacitor of less value will blink the led faster.
if you take a capacitor of more value will blink the led slower.
i used a 100 uf capacitor.

Step 5: All done

if you like the instructable follow and plz rate and please please vote for the 3rd epilog challenge
 my e-mail id is
Remove these adsRemove these ads by Signing Up