Controlling Stepper Motors USB-6009/L293D

[edcs]

Hi,

I am in the process of designing a system which utilises stepper motors. My original intentions were to write a VI which communicates with a PICAXE board which in-turn sends a pulse sequence to an L293D thus controlling the motor. I was wondering if anyone has any experience of communicating straight to an L293D using the digital outputs of a DAQ and controlling stepper motors using Labview? It seems like a less complicated solution to my requirements as it's eliminating the PICAXE board.

Thanks 🙂 

[AnalogKid2DigitalMan]

See this link:

http://www.seattlerobotics.org/Encoder/may98/steppers.html

Create and array that holds the values shown in the stepper table and index through them to toggle the digital outputs on the DAQ card. Note that the 600x series does not support hardware timing on the outputs so you will have to resort to a software timed loop, so you may be limited to 100's of Hz. Depending on the motor and load you may have to ramp up your velocity when starting or the motor may stall out.

Here's the specs for the 293 series:

http://focus.ti.com/lit/ds/symlink/l293d.pdf

-AK2DM