On Sunday 17 January 2021 22:44:36 Matt Shaver wrote: > On Sun, 17 Jan 2021 14:08:05 -0500 > > Gene Heskett <ghesk...@shentel.net> wrote: > > On Sunday 17 January 2021 12:06:42 Matt Shaver wrote: > > > On Sun, 17 Jan 2021 15:17:57 +0000 > > > > > > andy pugh <bodge...@gmail.com> wrote: > > > > The current linuxcnc-served Raspberry Pi realtime kernel does > > > > not work with the latest hardware revision of the raspberry Pi. > > > > > > Does it work for the 3B+? If so, maybe just add a note to the docs > > > that this is the hardware you have to use. In my own experience > > > the Pi3 works well, the Pi4 seems kind of shaky... > > > > I don't want to be seen as starting an argument with the legendary > > Matt Shaver, but I can't let that go by. It is NOT the least bit > > shaky here Matt, > > I have some Pi3s and I bought a 4 when it came out. I used the > "official" supply and case.
Taint a big enough supply, and it will over heat and crash with the case on it. > My biggest problem was that I couldn't get > the display sized right to fit the TVs I was using as monitors with > the Pi4, whereas the Pi3 "just worked". I put it aside and haven't had > a chance to try again. I have a 1920x display on the pi4's mini hdmi output, beautiful pix. > In any case, I had read Gene's description of his setup and also Ralph > Stirling's posts about his setup, and I thought, "Hey! I might like to > have something like that!" And then I read that they would drop > support for the Pi, so I was just trying to save the Pi option. I'd > love for it to work with a Pi4, but a Pi3 would be OK too if that's > what's possible, > Unless the guys go out of their way to muck with the armhf build, the pi4b and kernel I'm running will still be running master when I fall over. At 86, that is a possibility, but they took a loooong look at my ticker Tuesday and sent me home with a small change in the pills, and intructions to come back for another look after I've replaced this calendar with the next one. So as long as my wet ram is working, you'll see me asking dumb questions for a while yet. > I don't NEED any of this, I just like the [PI]-->>i2c-->>[Mesa] idea! > Anyway, don't let my random comments interfere with progress! ;) > [PI]-->>i2c-->>[Mesa]? i2c? i2c is too slow. With rpspi, change that to [PI]-->>spi-->>[Mesa 7i90] and it Just works. But the pi's all need a solid 5 volts applied to the correct header pins, too much loss feeding it thru the otg port. That and a small bit of forced air cooling with those stick on heat sinks, and its dead solid. > Thanks, > Matt Take care and stay well Matt. 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 Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
