Na 18.9.2010 3:19, Jon Elson je pisal: > Slavko Kocjancic wrote: >>>> And I like to complete EMC2 in way as is. FREE! Emc is Free so the some >>>> board should be free too. >>>> > Just to completely address your point, there SHOULD be some open-source > hardware accessories > for EMC2. Samco has an open-source step-direction servo drive (not EMC > specific. but....) > But, I think the difficulty of making your own boards for FPGAs, and > then building them and > testing them may have made this too complicated for the average > tinkerer. Without a logic analyzer > and an oscilloscope, if it doesn't work, it could be real hard to > determine what is wrong. FPGA's > generally can't be plugged into sockets, they have to be soldered to the > board. > > Also, the difficulty of making an IEEE-1284 (EPP mode) peripheral work > with a wide variety > of different parallel ports has kept me real busy over the last 8 years > or so. > > Jon
That is.... I can make fpga board at home. But I know that wery few can do that. So I make right now the board without SMD just to addres home builders. Thus I in doubt now what way to go. I can use thin traces and singlesided board or wider trace and double sided board(or a lot of jumper wires). As I know the EPP should be easy to interface (timing model) but the hardware is so different and need some pullup's in some case's. I wan't to see on linuxcnc page some expansion board to address a little low number of pins on printer port. Just expander not hardware stepgen. For stepper driver the linistepper is good one for low budget. And just try to find out on linuxcnc page. Just make teh difference for hobby use and prof. ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
