On Tue, 1 Apr 2008 23:42:59 +0300 "Alex Joni" <[EMAIL PROTECTED]> wrote:
> looks like an interesting design. If it would be to work semi-independently, > then you'll have to name them : X, Y&V, Z & W. ack. > > The X axis might in fact have two motors. I did a research in the > > archive and it seems this gantry axis setup is supported. > > gantry axis setup can be done, there is a bit of code missing in order to be > able to home it without certain hacks. > If you want we can go into further details/specifics, but I don't see a big > issue in this direction.. I'd appreciate it. I'll ask you more details on this if this project will go ahead. > > Y1 and Y2 will share the same rail but have independent motors > > and limit switches. > > call them Y and V, different joints, etc. Again .. there might be parts of > emc2 that need some adjustment, but nothing majour (mostly because there > aren't that many machines in use with this configuration). ok. > steppers and encoders have been proven as functional with emc2, as long as > you don't expect to correct position based on the encoder. (in other words: > the encoders are mainly used to see when stepping errors appear, and > everything is halted). mmm.. I believe it's expected to be able to correct, but i'll ask. what's the reason behind this? > > I should be able to influence the development a bit, so if > > there's anything that would make it easier to use it > > with EMC2 I would love to hear it. > > hmm, the things so far are a bit vague to be able to tell.. Please ask any detail that I've skipped overy in my description, I'll be more than happy to ask what I don't know and report back. > I think there are quite a number of people working with emc2 and 5i20, that > doesn't mean other cards aren't equally well supported. What is not working > at the moment is step generators embedded in the 5i20 FPGA, although that > might probably come one of these days. I need to choice the best card for this project so I will evaluate each driver. The problem lies in the driver or in the fpga? I've a bit of experience on both sides and might be able to help > > I'm also planning to write the code to use an USB jog/shuttle > > device for manual axis control, if it's not already supported. > > That's not necessarely needed, quite a few USB (and non-USB) devices are > supported by hal_input, and thus are beeing used to jog emc2 machines. I've checked both the sources of hal_input, the linux hid code and a program that I know uses that controller.. it seems that it is already supported. > > I would also have to do most of the development without the real > > machine, would the "axis" software be able to simulate it? > > Yes and no. AXIS by itself is just a GUI. You would have to set up a machine > simulation, and that can be done by using HAL (lots of simulation > components) and vismach (a special tool to visualise/simulate a machine). > Look at the sample configs for scara and puma to see how that is done for > robots. I think a simulation like this exists for some gantry type machines. ok, I'll do my homework. Will start with a simpler machine and then progress toward the final one. thanks a lot for your help. -- Best regards, Alessandro Zummo, Tower Technologies - Torino, Italy http://www.towertech.it ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
