In SX Microcontrollers, SX/B Compiler and SX-Key Tool, robotworkshop wrote:

[quote="eagletalontim"]With the regulator, can I use it to drop the power down from 12 - 14v to 5v, then control the output to be 12 - 14v to the motor using transistors without causing problems with the regulator?  I have never used a regulator before and am still learning as much as I can.[/quote]

The answer to your question above is yes!  It is one of the most common ways to handle this.

To control your motor there is a variety of options.  First, how do you need to control your motor??  Do you need just a simple on/off control?  Do you need to be able to vary the speed?  Also, do you need to control the direction?

If you just need simple on/off control then you might just want to use a relay.  There are quite a few examples of this for use with the BASIC Stamp.  You would control them with the SX chip the same way.  An example can be found at:

[url]http://www.parallax.com/dl/docs/cols/nv/vol1/col/nv6.pdf[/url]

Also, be sure to read through the old Nuts&Volts articles on the Stamps and SX.  They are very helpful.  You can get them at:

[url]http://www.parallax.com/Resources/NutsVoltsColumns/tabid/272/Default.aspx[/url]

For variable speed control in one direction you can consider MOSFET's.  If you need variable control in both directions then start looking at H-Bridge circuits.

Hope these help,

Robert

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