Thanks for all of your inputs...
My project is to motorize a compartiment door activated by a single button
like "open/close".
Since DC motors are alot more inexpensive and I have afew of them around
from slot-cars, Speed is not an issue, of course the more smooth the
moviment the better,
I've tryed to buil a "relay logic" circuit but got stuck in the midle and
eventually dropped that concept...and turned to uP....I was planing to use
PicBasic since I do some Basic related programing in Windows and WIndows
Mobile enviroments....
The movements should be like this:
If on point A go to point B and stop
If on point B go to point A and stop
If in between go to point A
Position would be determine by either micro-switch or integrated IR
barriers....I dont know waht sp+pecs to search in order to choose a uP so I
was counting on Your input and experience...I figure I only need 5 I/O pins,
and the code should be that big either....
Thanks for your time...
"default" wrote in message
...
On Wed, 20 Jun 2007 23:31:36 +0100, "Cableguy" wrote:
Hy guys,
Hope all of you are doing ok....
I'm a newbie in mciro-electronics, alrhough I have an electronics course,
i've never worked with PICs before...
I'm trying to design an "actuator" alike circuit, wich would run a dc
motor
foward or backward, depending on it's position....Kinda like the CD-Rom
draw
does, or a garage door opener....
I'm guessing that to figure the current position out I would have to use
some micro-switch or optic barrier along with one or two relays to invert
the direction....
Anyone ever deone or came across something similar?....
Thanks From Portugal
Paulo Gomes
Like westexjoe puts it you need to be more specific with your needs
Do you need relative position, absolute position, variable speed,
proportional speed control, how much over/undershoot is tolerable,
what size horsepower, etc. etc.
Describing the application goes a long way to helping make good
decisions on how best to implement what you want to do.
This is a common problem and been solved lots of times, so yes,
someone has done it.
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