Yes on this particular machine an extra para port is possible, but I will not gain the ability to count the encoders I have as fast or as reliable as I would like. Finding how fast the audrino can count would be cool, as that would make for a very low cost expansion running off serial port.
Like I said I am working on /planning 3 machines. The harbor freight 8x14 lathe is sitting on bench with a baldor 3 phases motor and an allen bradley VFD on the spindle. It has been like this for a while.(year) I have rudementry counter encoder and index pulse generator on it. The seacond is a harbor freight 4x5 mini micro lathe. This has the dc spindle motor. I thought I had the right pulleys to get the z axis set up but one of them is not going to work. I also had a AMC servo drive I would of liked to have used on the spindle but it was a can only interface, but it has nice fets in it for salvageing. By not learning in this case I was actually referring to learning about the h bridge and driving it, specifically, but also in general about fpga and such. I am not a great inovator as much as an awsome immitator. so as such I am adding alot of bits I'v seen from other projects. The milling machine (you guessed it harbor freight) has been semi enclosed and still fully manual. I see a long road ahead, but the journey should be grand, if the destination a little anti-climatic. Josh ________________________________ From: Ray Henry <[email protected]> To: Enhanced Machine Controller (EMC) <[email protected]> Sent: Thursday, August 20, 2009 12:16:26 PM Subject: Re: [Emc-users] Mesa io card driving h bridge and counting encoders On Wed, 2009-08-19 at 21:54 -0700, jon doe wrote: > I am building a few machines currently. <s> > I am stuck at limited io ports and I would'nt learn as much. Hi Jon. Welcome to the project. You can learn a lot with just a few IO. HAL and ClassicLadder will allow you to connect those in creative ways. One of my early experiments was pulling a relay to make coffee in the morning. If your computer permits, an extra parport card can expand your project quite a bit. You sound like you should be able to build IO interface circuits pretty easily. Rayh ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
