[TowerTalk] Remote Tuning of Shunt-Fed Tower

[Larry Phipps]

For inexpensive driver boards, look at http://www.stepperboard.com/. 
These can control multiple motors from a serial port, so you can 
computerize your control or use manual tuning with switches. I have used 
these successfully on a number of projects.

Look at surplus houses for motors... you shouldn't have to spend more 
than $20 for a decent motor. make sure your motor matches your driver... 
unipolar vs. bipolar. Both will work fine, but require different voltages.

Larry N8LP



Pat Chiles wrote:

>I am planning on implementing a stepper motor remote tuning feature into my shunt fed tower.  Richard, KJ7CU, supplied me with lots of  good information including where he got his motors and controller.  The company has been bought out and the new company want $300 just for their controller and $100 each for their motors.  I can get the parts I need for about $220 from other companies I found on the Internet.  Does anyone know of a source that sells steppers and controllers with an eye to the hobbyist at a lower price than I have found?
>Pat, K8PC
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