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Date: Wed, 21 Dec 2011 12:11:24 -0500
Message-ID: <CALSZ9godJsJDhBd_PaCiWPx9M8GyKz8PW1wVUs6NxVgtrOS-Fw@mail.gmail.com>
Subject: [geda-user] Design suggestions...
From: Rob Butts <r DOT butts2 AT gmail DOT com>
To: geda-user AT delorie DOT com
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Reply-To: geda-user AT delorie DOT com

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My application has two 12 v dc motors that I want to operate in both
directions with speed control. I have two potentiometers to determine speed
control for each motor. I have one push button and three to five switches
for state control.

I initially didn't plan on speed control for each motor and I had a PICKit
2 so I opted for the Low Pin Count development board with the setup for the
pic16F690 microprocessor.  The documentation for that microprocessor says
the pmw can be set up for one, two or four channels but it has just one pwm
module.

The processor that microchip suggests has more pins and I'd have to
purchase more development hardware.  I have the code completed and working
for the five input state controller and the two adcs monitoring the motor
speed potentiometers.  Does anyone have suggestions for speed and direction
control of the two motors where I don't have to purchase new development
hardware?  I thought about two micros in a master slave configuration but
that would make development and prototyping on my desk difficult.

Thanks,
Rob

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My application has two 12 v dc motors that=A0I want to operate in both dire=
ctions with speed control.=A0I have two potentiometers to determine speed c=
ontrol for each motor.=A0I have one push button and=A0three to five switche=
s for state control.<br>
<br>I=A0initially didn&#39;t plan on speed control for each motor and=A0I h=
ad a PICKit 2 so=A0I opted for the Low Pin Count development board with the=
 setup for the pic16F690 microprocessor. =A0The documentation for that micr=
oprocessor says the pmw can be set up for one, two or four channels but it =
has just one pwm module.=A0 <br>
<br>The processor that microchip suggests has more pins and I&#39;d have to=
 purchase more development hardware.=A0=A0I have the code completed and wor=
king for the five input state controller and the two adcs monitoring the mo=
tor speed potentiometers.=A0 Does anyone have suggestions for speed and dir=
ection control of the two motors where I don&#39;t have to purchase new dev=
elopment hardware?=A0 I thought about two micros in a master slave configur=
ation but that would make development and prototyping on my desk difficult.=
<br>
<br>Thanks,<br>Rob

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