4017 without a CLK signal

the switch will need de-bouncing - google this.

try this

Ohhhh. I didnt think of that. No wonder. I'll look into it.

Thanks for that

TS.

Hi, Tom. The easiest non-technical way to do this is to rely on the fact that a CMOS input is essentially infinite input impedance (it doesn't draw any current at all), but has about 10pF of capacitance to GND. You can hope this capacitance will hold the logic state while you use a single pole, double throw pushbutton (with normally-ON and normally-OFF contacts) like this (view in fixed font or M$ Notepad):

| | VCC | + | | | | | '---o | __--o-->To CMOS Input | .---o | | | | | === | GND | (created by AACircuit v1.28.6 beta 04/19/05

For CMOS (and only CMOS) inputs, this might be enough to debounce your switch signal, as long as the switch is snap-action, close to the clock pin, and there aren't any external sources of noise like relay contacts or inductive loads.

Again, this *might* work. If not, you can use the advice of some of the other posts.

Good luck Chris

put a capacitor from input to common. something like a .1

Thanks, but I'm pretty sure I tried that one already =)

want

receives

input.

Hello Jason, try this:-

... Donkey

No actually, I lied. Its working. I used a 100K & 0.1uF greencap in parallel tied to Ground from Input, with switch hooked up +Vcc, seems to be working ok. BTW, Jason is my mate. Im Tom. Im just using his account. lol

Thanks.

Thanks Donkey, but the problem seems to be solved now. BTW, Jason is my mate. Im Tom. Im just using his account. lol

No worries Tom. Glad you sorted it out. ... Donkey

Below I used a capacitor in parallel with the resistor to smooth out the button pushes.