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'Simple Program'
1999\02\15@221317 by Tom

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<DIV><FONT face=Arial>I have a simple project to move a motor one direction,
stop, then the other direction. Anyone interested in writing it with the PIC
16F84?</FONT></DIV>
<DIV><FONT face=Arial>spam_OUTtomTakeThisOuTspamcomtronix.com</FONT></DIV></BODY></HTML>

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1999\02\15@222605 by Bill Arkin

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Tom, if they are small motors, I suggest the excellent MotorMind B modules
from http://www.solutions-cubed.com.  They are so easy to interface to from the
PIC.

-Bill Arkin
**25 Years of Laser Services**
          Holo-Spectra Inc.
          7742B Gloria Ave.
        Van Nuys, CA 91406
             818 994-9577
          http://www.lasershs.com

-----Original Message-----
From: Tom <.....tomKILLspamspam@spam@COMTRONIX.COM>
To: PICLISTspamKILLspamMITVMA.MIT.EDU <.....PICLISTKILLspamspam.....MITVMA.MIT.EDU>
Date: Monday, February 15, 1999 6:13 PM
Subject: Simple Program


I have a simple project to move a motor one direction, stop, then the other
direction. Anyone interested in writing it with the PIC 16F84?
EraseMEtomspam_OUTspamTakeThisOuTcomtronix.com

1999\02\16@000657 by Tony Nixon

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> Tom wrote:
>
> I have a simple project to move a motor one direction, stop, then the

What type of motor?

DC, AC or Stepper

--
Best regards

Tony

Multimedia 16F84 Beginners PIC Tools.
** NEW PicNPro Programmer and Port Interface **

http://www.picnpoke.com
Email picnpokespamspam_OUTcdi.com.au

1999\02\16@101129 by list

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Thanks for your reply.  One port (#1)  on the 16F84 is to connect to a
momentary switch. When depressed, port (#2) will stay HI while port (3#)
stays LOW. Depressed again, the ports 2 & 3 will go low. Depress again and
port 2 goes LOW and 3 goes HI.
These ports are driving 2 SS Relays which are connected to forward and
reverse windings of an AC motor. The motor has  limit switches and stops,
opening the connection to that winding.
Tom
{Original Message removed}

1999\02\16@105511 by Martin McCormick
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       The one thing I see here that just screams out from this
message is an absolute need to be sure the momentary switch is
debounced.  For those who have been on the PIC list for a while, the
subject of the best way to do this comes up regularly and there are
probably three perfectly valid ways to debounce a switch for every PIC
list member so there is no one correct answer.  For newcomers, the
problem is that most mechanical contacts don't come together or go
apart cleanly.  They bounce like golf balls do on a hard surface
except that they may only make 5 or 6 quick bounces before settling.
The bounces are so fast that human eyes and ears can't tell anything
unusual happened especially when the result is the
ringing of a door bell or the turning on of a lamp, but a PIC or the
input to a flip-flop can run at literally millions of operations per
second and each of those bounces is read as a totally separate event.
The result is a totally random and unexpected mode of operation that
would satisfy only a betting type.

       In other words, this will be easy if you make sure to debounce
your switch first.

Martin McCormick WB5AGZ  Stillwater, OK
OSU Center for Computing and Information Services Data Communications Group

list writes:
>Thanks for your reply.  One port (#1)  on the 16F84 is to connect to a
>momentary switch. When depressed, port (#2) will stay HI while port (3#)
>stays LOW. Depressed again, the ports 2 & 3 will go low. Depress again and
>port 2 goes LOW and 3 goes HI.
>These ports are driving 2 SS Relays which are connected to forward and
>reverse windings of an AC motor. The motor has  limit switches and stops,
>opening the connection to that winding.

1999\02\16@173706 by Tony Nixon

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Hi Tom,

Email me privately if you would like me to help out with your code.

--
Best regards

Tony

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