Home > Uncategorized > rStep assembled and working

rStep assembled and working

November 27th, 2010

I got the parts in from digikey today, and assembled a couple of the rStep boards.  Seems that sanguino uses the 644p and I ordered the 644.  Additionally, I’m clocking the 644 at 20Mhz while the sanguino expects 16Mhz.  I had to make a number of changes to make the 644 work with the arduino.  First, I had to modify the bootloader by adding an entry for the 644 @ 20Mhz, recompiled it, and uploaded it through the JTAG port.  Additionally, the boards.txt file had to be changed to reflect the 644 @ 20Mhz.  Now, it is compatible with the arduino IDE and I was able to compile a simple LED blinking application and upload it without problems.  A few more tests and I’ll be able to send out the beta boards to the developers for further testing.

 

P1040341

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  1. Peter
    | #1

    This is very impressive, I also had similar issues integrating the 644p into the Arduino IDE – as well as the programmer.

    Do you have a video/update to this board in action?

  2. | #2

    Ill be posting something soon.

  3. Fernando
    | #3

    Hi there.

    CNC over USB is awesome!
    It’s nice to see that you are moving forward with your design.
    I am interested in your rStep project but I’m targeting high current ones. Do you think this design can be adapted to work with Allegro’s A4989?

    Keep up the nice work!
    Regards

  4. | #4

    Yes, though I’m targeting smaller CNC implementations (i.e. hobbyists). I plan on exposing the step/dir pins so that you can connect it to a different controller board if needed.

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