Cost of 555:   50c
Cost of PIC:    20c
Cost of programmer,  $40

Cheaper?
 On 12 Dec 2013 13:57, "Bob Ammerman" <picram@roadrunner.com> wrote:

> Unless you need > 5V operation, or higher current, or ...
>
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
> Of
> smith steve
> Sent: Thursday, December 12, 2013 7:15 AM
> To: Microcontroller discussion list - Public.
> Subject: Re: [EE] Help configuring a 555
>
> Grungy pic will provide a lower pin count solution at a lower cost that o=
ut
> performs the 555 every time ....
>
> Sorry my $0.02
>
> Steve
>
>
> On 12 December 2013 08:14, Lindy Mayfield <Lindy.Mayfield@sas.com> wrote:
>
> > Oh I googled the hell out of it before asking.  I have and LED
> > flashing with a POT to control the frequency.  I also added a photo
> > resistor to control the speed. (It wasn't perfect because - for want
> > of a better term - "amplify" the resistance to make it more "sensitive"=
).
> >
> > I also want to use it as a PWM to play with motors before actually
> > programming it into the Pi.  That I think I can do without any help.
> > :-)
> >
> > -----Original Message-----
> > From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
> > Behalf Of John Gardner
> > Sent: Thursday, December 12, 2013 12:01 AM
> > To: Microcontroller discussion list - Public.
> > Subject: Re: [EE] Help configuring a 555
> >
> >
> > There's a vast literature on 555 apps -  A little googling will turn
> > up much of interest.
> >
> >
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