You may want to use this code to test all the electronics before installing any of the suggested firmwares.

I'm planning on:

  1. Flashing the test firmware onto the Arduino Mega 2560, then unplugging it from the USB.
  2. Connecting RAMPS 1.4
  3. Connecting all 3 jumpers under the X-Axis (leaving the other jumpers disconnected).
  4. Connecting a stepper driver to the X-Axis on the board.
  5. Turning the trimpot down all the way, and then back up 1/4th of the way.
  6. Plugging in 1 NEMA 17 motor to the X-Axis.
  7. Connecting 5A DC input into RAMPS 1.4 (not plugged in).
  8. Finally plugging it in and seeing if the motor moves for 5 seconds.

Now my question is, if I'm going to do this to test out a single NEMA 17 motor, do I need to comment out the rest of the test code before loading the firmware?


1 Answer 1


There's no reason to comment anything out. It will work just fine without any modification, even if you're just testing a single motor. That said, I don't see the value of this "test firmware" over just installing Marlin.

  • $\begingroup$ Somebody must see the value in it, since they wrote it, but maybe it's no longer valuable, but it was at the time. $\endgroup$
    – leeand00
    May 4, 2016 at 19:53

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