On Friday 19 June 2020 12:35:53 Chris Albertson wrote: > You can't connect directly to a PC. You physically wire an Arduino > "Uno" to the controller board, Then install programmer software in the > Arduino, in effect turning the Arduino into a programmer. Then the > Arduino is connected via USB to a PC. The PC can run any OS. > > Then what you load onto the controller board is NOT the new Marlin > firmware but a "boot loader". A boot loader is what is inside every > Arduino and is what makes them an "Arduino and not just a dumb AVR > chip. Using an Arduino to install a bootloader is a common thing > and is not special to the Ender3 printer. > > OK, now that you have and Ender with a bootloader you can use any PC, > Linux, Mac or whatever to load "sketches" into the Arduino board you > now have in your printer. > > Why is there no boot loader in your printer? I don't know but one > guess is they wanted to use the memory for something else. Boot > loader take up a few hunderd bytes and on these tiny 8-bit chips EVERY > byte matters. > > On Linux CNC to modify a configuration you edit an INI file or a HAL > file and re-launch the software. In Marlin you must edit the C++ > code, re-compile and re-flash the chip. Many times you need to > disable features to make the code fit. > > If you are going to swap firmware, you might first verify you know how > to re-install the factory frmware, just incase you find you can't fit > Marlin 2.0 into the controller's memory or if you make a mistake with > the editor and introduce a bug. In any case, you need an Arduino > to use as a programmer. > > The Arduino IDE is identical under windows, Mac or Linux. Get that and > play with it and see if you can do simple exercises like make an LED > blink with different patterns BEFORE trying to change the firmware. > > If you have to buy an Arduino, the cheap eBay clones are just as good. > Arduino is "Open Source" so the clones are made from published > designes and really do work identically. Buy two of them soyou can > test out the new Marlin 2.0 on a $6 Arduino before you commit to > loading it to the printer. > Considering the simplistic gcode cura sends it, with custom m1xx commands to control the heaters, Merlin is nowhere near able to do what LCNC can do. So I expect I'll just let it muddle along. I don't consider the autobed mapping as all that useful unless the z screw setup is doubled, putting another z motor on the opposite post. Even with enough string being fed, I think the improved air flow from the extra air duct probably demands a higher nozzle temp just to get a decent weld to the next layer down. I've set a couple files to start at 210 so the start layer sticks, but 200 gets me the feel of poor interlayer welding, so with that improved cooling, I think 65C/210C might be a higher strength combo. I have a 5x5x5 at 60/205 going now. To check dimensions now that its using enough string. > > Then there are peopleusing LinuxCNC to drive 3D printers. Seems silly > to use a PC and a Mesa card when a $6 Aruduino can do the same job. > > On Fri, Jun 19, 2020 at 7:28 AM Gene Heskett <ghesk...@shentel.net> wrote: > > On Friday 19 June 2020 10:10:16 Gene Heskett wrote: > > > I can see bed, nozzle tmps, as they heat from a locally launched > > > render of yet another 5x5x5, but not the filename or anything else > > > the printer might be doing. > > > > > > Am I supposed to see it all? > > > > > > Thanks, but puzzled. I'll let it finish the 5x5x5 so I can check > > > dimensions since I can't stop it from this machine. I have it > > > useing enough string now so the 5x5x5 is probably fat. > > > > > > It finds the printer but I haven't actually added it to the list, > > > maybe it takes that to do it all? I can't abort this locally > > > started print from here. > > > > > > Cheers, Gene Heskett > > > > And I just found a limitation that pisses me off, there is better > > firmware, Marlin 2.0, for it, but it only installs from a winders > > box over spi via a presumably very short cable from some sort of an > > spi adapter. Has anyone made that work from Linux? > > > > Thanks. > > > > 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-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users
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-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
