So I started following the instructable for the Pocket Laser Engraver using the DVD-ROM Steppers, http://www.instructables.com/id/Pocket-laser-engraver/. I can plug the L293D directly into the Arduino Uno and use one of the built in examples for the stepper motor, the motor works correctly and goes back and forth
I found this schematic, http://ikalogic.com/phpBB3/download/file.php?id=343&sid=13518e12fc160372efc5c6368982164e&mode=view, so I can use the L297 with the L293 with GRBL.
When I use the L297, the pins according to GRBL for step and direction are reversed per the website, http://dank.bengler.no/-/page/show/5473_connectinggrbl. Pin 17 on the L297 has to go to Digital Pin 0 and Pin 18 on L297 goes to Digital Pin 3. The other issue that I have is that the motor only goes one way. I can not get the motor to go backwards, only forward. I have double checked all the connections, tore all the wires up and redone them to make sure it wasn't something simple but I get the same results all the time, only one direction of travel.
Anyone out there had similar problems or is the schematic I am using messed up? Thanks!