Anyone have PIC micro controller design / program

[aceparts_com]

Hi, I'm looking for someone to design / program a simple PIC based circuit. Any offers?

Alan

[theexcession]

It's been years since I did any work with PICs.

Mostly I just used a prototyping board and grabbed some circuits from the numerous PIC internet sites and modififed them to suit, so a circuit designer per-se was never really required.

I seem to remember MPLAB ( www.microchip.com/) is the dog's danglies for this sort of stuff, I have a copy of v6 lying around somewhere if you wanted to 'take a look' at it, they are upto version 7.1 now.

Have you got a programmer yet? I splashed out and bought a PIC Start Plus but there are heaps of designs for home made programmers available on the net.

What sort of stuff are you thinking of doing?

best
Ex

Edited to say: I read your post properly this time and now see 'someone' instead of 'something' - drop me a mail via my profile. Can't promise much as I'm pretty busy at the moment but I may know a man who can.....

>> Edited by theexcession on Thursday 9th June 14:17

[Pigeon]

Failing that, I could probably do it. What sort of functions is the gadget intended to perform?

[aceparts_com]

needs to basically act as a one touch dimmer.

Quick push of button for led's on / off
longer push to ramp the output (PWM) up and down over say 10 steps.

PWM must have feedback so that the voltage stays constant regardless of load.

Cheque's in the post!

[dilbert]

Cant you buy that already.

Try;
TL Carr Electrical

[aceparts_com]

no, needs to be 12v dc with regulated output of max 8volts.

[dilbert]

aceparts_com said:

no, needs to be 12v dc with regulated output of max 8volts.

Agreed, I don't think you can buy that off the shelf. Although, it sounds like your load isn't a lamp.

If this is for electric windows, I have a feeling that there is a solution on the market.

Edited to add;

Just had a look at your site. It all makes sense now!

I'm now wondering if you are going to get a PIC into the package I think you're going to try for. I've probably got the wrong end of the stick though!

>> Edited by dilbert on Thursday 9th June 21:49

>> Edited by dilbert on Thursday 9th June 21:49

[Pigeon]

Sounds pretty straightforward. I should be able to get a prototype working over the weekend (busy tomorrow but free after that).

I take it you want the variable output referred to ground?

What sort of current does it need to supply? Does the load mind ripple?

[aceparts_com]

load doesn't mind ripple. Simply powers a range of LED's. Out put voltage must vary between about 2 volts and 8 volts max. I'll email across a flow chart that i've been beavering away on!

[Pigeon]

Fine, have PMed you my email address.

[Zad]

Or you could do it old-school stylee with a potentiometer varying the mark-space on a 555 timer driving a mosfet.

For anyone looking at experimenting with PICs, Maplin have quite a good cheap experimenter board.

www.maplin.co.uk/Module.aspx?ModuleNo=37192&doy=13m6

It doesn't have fancy ZIF sockets or a breadboard area, but it does have pushbuttons and LEDs which would be sufficient to develop this project! Microchip are an enlightened company (I get the feeling the engineers run the place rather than marketing men) and have made the development software available for free download. For bona-fide businesses they even supply samples of their chips.

Mike

P.S. Give me a shout if you need any help!