I am trying to construct analog gauges to display CPU load, RAM use, and Network bandwidth. I am very much a n00b with all of this but everyone has to start somewhere. Anyway, my research has lead me to the Switec X27.168 stepper to drive the dials as they are cheap and works with Gaugette (http://guy.carpenter.id.au/gaugette/about/) so the behind the scenes code is done. I’ve also decided to have an Arduino Uno run the motors as this seems to be the best all around solution.
Now the confusing part. How do I connect the motors to the Uno? This tutorial (https://learn.adafruit.com/adafruit-arduino-lesson-16-stepper-motors/overview) indicates its more or less a straight connection using a L293D (Data sheet http://www.datasheetcatalog.com/datasheets_pdf/L/2/9/3/L293D.shtml), so total parts would be motor, L293D, and some soldering. However, I cam across this kit (http://hackaday.com/2013/01/19/custom-gauges-with-a-stepper-motor-breakout-board/) which has no L293D but DOES have a number of resisters to prevent electricity back flow into the Uno. There is also the motor shield which uses a L293D but it says it only runs 2 motors (I need 3) and from the looks of it, there is lots of little chips and what not.
I am confused. What do I need to run 3 Switec X27.168 stepper motors from an Uno?