tried a few things

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  • November 20, 2011 at 6:48 pm #1692
    socketcap
    Member

    Greetings,

    I am trying to make the motors move and I have tried many things read in other topics in this forum and others.
    I have Termite running and sending gcode text that I have pasted from other discussions in this forum I do get a “ok” as a response.

    I still cant get the code uploaded to to the arduino (with the arduino uploader utility), In fact I just read in another persons post about the patched hex file and I found it a few minutes ago and tried it and I still get the same response from AVRdude and if I could figure out how to get a screenshot here it might be able to help a bit with figuring out the situation.

    I read another comment about turning their connected motor and having axis led illuminate in response to turning stepper shaft in their fingers, I do have this condition so I am fairly sure I have the steppers coils connected correctly.

    I have all the trimpots turned to low or off and have the one stepper connected to the x axis and have tried to turn up the pot slowly after having sent a gcode command in Termite.

    Not sure what to do now except write here.

    November 20, 2011 at 10:11 pm #1693
    alden
    Member

    Have you followed the instruction found here?
    http://www.synthetos.com/wiki/index.php?title=Getting_grbl

    It directs you to the grbl project page on installing here:
    http://dank.bengler.no/-/page/show/5470_grbl?ref=mst

    The .hex you want is here. Get the latest 07b version in the Downloads area.
    https://github.com/chamnit/grbl

    Alternately, you can use our version – but it’s not as advanced:
    https://github.com/synthetos/grblShield
    unzip this file: grbl_0_6b_atmega328p_16mhz_9600_with_grblshield_patch.hex.zip

    You can’t really drive grbl from Termite – at least not any files that are more than a few lines long. We are developing a console program for grbl and TinyG. Until that’s ready you might want to try gctrl that can be found here:
    https://github.com/damellis/gctrl

    November 20, 2011 at 10:48 pm #1694
    socketcap
    Member

    I have tried all the links that you mentioned, I am very computer literate but I am not a programmer so I am not exactly sure what to do with the code from Github, other than save it and try to upload it to the arduino board with “arduino uploader” utility program

    “avrdude.exe: stk500_getsync<>: not in sync: resp=0x00”

    the text above is what I get when I use “arduino uploader” to try and send the latest hex file.

    Is there enough info here to at least think its a software problem and not hardware?

    November 20, 2011 at 11:05 pm #1695
    socketcap
    Member

    http://dl.dropbox.com/u/50339240/avrdude%20response.jpg

    Thanks for the dropbox suggestion

    November 21, 2011 at 3:52 pm #1696
    Riley
    Keymaster

    So a few things. Once you “install” grbl on an “arduino development board”, you no longer own a “Arduino” in the sense that you can just hookup to their IDE and click upload. You are replacing the arduino boot loader with the grbl code.

    That being said the screen shot you posted is not much help. What programmer do you have? Do you have an avr external programmer?

    In the links alden posted you will be lead to this page: http://dank.bengler.no/-/page/show/5471_gettinggrbl?ref=mst

    This is GRBL not GRBLSHIELD. So we create the hardware that grbl talks to. That being said. I have never used the “arduino uploader” method before and cannot comment on that way. However you can try that route if you would like. I for one just got an avr programmer and use the avr studio 4 to program the hex file on the the arduino board.

    Riley

    November 21, 2011 at 5:29 pm #1697
    saci
    Member

    Hi,
    if you have un Arduino with Duemilanove or Uno bootloader with ATmega328(p), try the Xloader software found here:

    http://dl.free.fr/oi9E890sb

    This is a simple GUI for Arduino programming so you don’t have to use the Arduino software ( the avrdude is included ).
    Enjoy!

    November 21, 2011 at 10:40 pm #1698
    socketcap
    Member

    Thank you very much for the reply’s, I perhaps should have asked some more questions in advance about the process of flashing the chip on the arduino board.

    I am ok with the dedication of the arduino to the grbl code I did purchase it for that.

    Silly me, sorry for the lack of prerequisite process knowledge, There is a programmer I will purchase from Sparkfun and then I might be able to do whats needed to flash the grbl code to it.

    The USB AVR programmer sounds like a plan too me.

    I will have to figure out how to use the github site someday.

    I am really excited about the GRBL shield, after I get beyond this learning curve here it should be a lot of fun , I have messed around some in the past with Parallel port cnc stuff and it was a pain in a different way , I am really looking forward to future USB style fun in the CNC world.

    I have some 8020 aluminum extrusions to use for creating some desktop gantry experiments that would be perfect for the arduino/grbl shield combo.

    Sincerely,

    Colin

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