How to use a 4017ic with a 555 timer

Depending on the leds you have and your power supply you will need to use resistors in between the led's + pin and the pins from the 4017ic.

Category:

Howto & Style

Tags:

• how
• to
• make
• use
• 4017
• 4017ic
• 555ic
• 555
• lm555
• timer
• circuit

[186kms]

I think you have your pin assignments wrong if the notch is facing up on your 4017 chip. Notch up, you have 1 through 8 pins down on the left and 9 through 16 pin, on the right, are from the bottom up…..

[Flea5000000000]

@186kms O: crap, thanks for the comment!

[dinger7997]

how did you not fry the leds with no resistors at 9v and you should put the leds in order 1 to 10 then you should get some diodes and make the night rider lights

[Flea5000000000]

@dinger7997

Hey, the leds did not need resistors because the 4017ic takes some power away, the battery is half dead, and I have high power leds.

[Flea5000000000]

@dinger7997 this was just a simple deminstration on how to build the circuit

[Flea5000000000]

@nv1nc1bl3 yes

[orbiter8]

Remember also that you can check an ordinary LEDs polarity via the small plastic rim around it's cap. The cathode side has a flat edge.

Good video.

[kinsi55]

nice vid ;)

[supersanchez1991]

i like it. nice vid