Gene, The rpi4 is available in 1gb, 2gb and 4gb memory versions ($35, $45, $55 respectively).
Alan > Date: Sun, 21 Jul 2019 15:27:17 -0400 > From: Gene Heskett <[email protected]> > To: [email protected] > Subject: Re: [Emc-developers] LinuxCNC + RPi 4 > Message-ID: <[email protected]> > Content-Type: Text/Plain; charset="utf-8" > > On Sunday 21 July 2019 13:20:37 andy pugh wrote: > >> On Thu, 18 Jul 2019 at 21:47, Pedro Grijalva <[email protected]> > wrote: >>> Hi I'Interested on run Linuxcnc on RP4 >>> can you share the steps ? >> >> I have put the SD card image _temporarily_ here: >> http://www.linuxcnc.org/dists/buster/2.8-uspace/ >> >> Note that this is a run-in-place setup, as the debian packaging isn't >> set up quite right for Raspberry Pi. >> This means that you need to type this at the command-line to run it. >> (and yes, it really is dot space dot slash) >> . ./linuxcnc-dev/scripts/rip-environment >> linuxcnc >> >> (or latency-test to run the latency test) >> >> Please only download this if you have a Pi4 and genuinely want to >> experiment, for the sake of the web site bandwith limits. > > I am dl'ing it, and will get a pi4, and whatever card seems to be the > correct interface. Someone mentioned the 7i76E? but I've doubts it can > what I am doing. > > To dup what I am doing with the 7i90HD and a stack of 7i42TA's, I'll need > 3 encoders, two stepgens, a pwm with direction for the vfd, two in's for > homes, and several outs. I don't think the 7i76D's I have can supply the > 2nd and 3rd encoders for the jog dials. > > So what do I use? > > A 7i90 with an ethernet connector might work, but what it has is rs422, > and likely too slow at 10 megabits. OTOH, if it can do spi at 50 > megabits... Actually I am writing at 42Mb and reading at 25Mb, and > thats working fairly well under stretch right now. > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
