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graybeardtx

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graybeardtx
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  • Turned out to be a defective RAMPS 1.4 card. The D2 diode looked to be fried. Not sure how that figures in but I replaced the board and it all works smoothly now.
    in Erratic Z axis motion Comment by graybeardtx October 2017
  • I corrected the G28 line. The end stops are all "off" during the moves. I wondered about the possibility of cross talk. The wires on the steppers are all 1M long so they are not cleanly separated. But because they were terminated with Molex connecto…
    in Erratic Z axis motion Comment by graybeardtx October 2017
  • Thanks. I tried those values and it didn't have any noticeable effect. As an unscientific observation, there doesn't seem to be any stalling of the motors. It really appears that the commands are somehow being ignored. I did a simple test - moving…
    in Erratic Z axis motion Comment by graybeardtx October 2017
  • I'll see about the melzi/sanguino uploader. i did try several times with the ISP with the same results. When I use the raw avrdude commands I get all zeros for the device signature. I actually have 2 melzi boards and they both behave the same. I hav…
    in Changed Processer ID? Comment by graybeardtx July 2017
  • That solved this issue. Onward to the next one.
    in Compile error for default firmware Comment by graybeardtx September 2016
  • Thank you.I finally determined (guessed is more accurate) that the firmware file that came with the original printer was a dump of the bootlooader and hex file for the printer. Did a standard "Burn Bootloader after changing the file name in the boar…
    in `.text' will not fit in region `text' during compile Comment by graybeardtx June 2016
  • Apparently there is a problem with the ld.exe in IDE 1.6.x when run on WinXP. By using the ld.exe from 1.0.6 it compiles just fine. Next question - again pardon my complete ignorance. Is the firmware loaded to the chip via the USB interface? The Ard…
    in `.text' will not fit in region `text' during compile Comment by graybeardtx June 2016
  • "Should" is the key word here and of course another problem pops up. I went back through the configurator and removed all the languages except English. Now when I compile I get: collect2.exe: error: ld returned 5 exit status Using library SPI at v…
    in `.text' will not fit in region `text' during compile Comment by graybeardtx June 2016
  • Pardon my ignorance - I am not a programmer - how do I do that? I looked at the file and am not sure how or where to change the pins. I didn't find a section that seemed to apply to my motherboard 63 = Melzi V3. Here is the pin header:
    in 'DIO64_DDR' was not declared in this scope Comment by graybeardtx June 2016