Russell Brown wrote: > A lot of folk are actually scared of configurability (sp?). As others > have noted, they want an appliance not something that's a project in > it's own right. > Well, configurability shouldn't be a negative if somebody has already created the configuration the way you need it. Maybe we need more sample configs to be part of the distribution. > > --- Going a little Off Topic ---- > > FWIW, I was intrigued and bought a BBB to play with. > > I didn't end up using it for my Mill CNC project as I couldn't find any > concise documentation on how you actually connected the BBB to motors > and switches (I'm a programmer of business systems by trade and know > naff all about CNC or electronics). > > Did I need a cape? Could I just connect to conventional drivers like a > parallel port? Do I need to solder wires on or is there a screw type > connector that fits the sockets? It wasn't obvious. > The Bone has 3.3 V outputs, and they are not capable of high current. You don't need a commercial cape, but a booster/level translator would be a good thing. For stepper drives, putting a 74HC240 or similar driver chip powered from the 5 V supply to the Bone would be a good thing. (Make sure only the inputs to the HC240 are connected to the Bone's header.) Then, you could drive typical stepper driver inputs from the output of the HC240.
I built a similar contraption for a different purpose and just plugged it into the P8 header of the Bone. Jon ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60134071&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
