On 1/20/2014 3:38 PM, Dave Covert wrote: > Right now I am playing around with a 0.23Nm stepper motor and an EasyDriver > board hooked up to my BBB. Which makes me wonder... what if I just hooked > up 6A versions of the EasyDriver to my BBB to drive the motors and ran > LinuxCNC? I am moving motors without a BeBoPr++ now, why do I need one? what > does the BePoPr++ do exactly? (obviously a newbie question)
The BeBoPr+ and the Replicape are focused on 3D printing, so provide support for things like high-current bed and extruder heater outputs and analog inputs for thermistors to measure temperature. If you are interested mainly in "conventional" CNC, you may find one of the other capes on my list more appropriate for your use. Besides the 3D printer stuff you don't need, reasons to use a cape would include: * Level translation and protection of the BeagleBone's 3.3V I/O pins. * Hardware support for E-Stop. * Easier / cleaner wiring (if you have CNC hardware designed to connect to a standard DB25 parallel port pinout). ...but there's absolutely no reason you can't just wire some drivers and limit switches to the BeagleBone I/O connectors using flying wire, a prototype cape, or any other method at hand. Just make sure you don't feed anything over 3.3V into the BeagleBone (or 1.8V for the analog signals), or you can fry it. -- Charles Steinkuehler [email protected] -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
