[SOLVED] RAMPS 1.2 + Sprinter + Pronterface not quite working.

Hello,
I am finally in the final stages of my Mendel Prusa.

I had all the electronics wired up, according to this diagram.
[reprap.org]
When I connected with pronterface just the extrude button worked, but the stepper driving the extruder is the one that is supposed to drive the X motor.

I can't get to move the other motors, I tried to adjust the potentiometer in the polou.

Suggestions?

Edited 1 time(s). Last edit at 08/04/2011 09:36PM by Kalle.

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Double check your wiring. It sounds like you plugged the the X motor into the E controller or vice versa. The motors that are not turning might not be wired right or you might have plugged the Pololu boards wrong (I hope not). If you have a multimeter, you can see figure out which wires from the motor pair up and then connect them accordingly.

I'll check the wiring,
do I need to connect also the endstops? I tried with and without endstops but no luck.

Is it possible that during the assembling the controller of the E and X got swapped?

The wiring seems ok, I say seems because I didn't wire the motors myself, but all the cables are connected to the board in the same order, so the wiring should be ok I guess. Are there any pictures to check the wiring?

How can I check if the pololu are working?

Building the machine it is the easiest part!

If your endstops are not connected, then you'll be able to move your x, y, and z steppers in the positive direction but not the other way: If you nudge with +1 or +10 button in Pronterface the motors would move but not -1 or -10. If the head or the bed moves in the opposite direction, then you need to unplug the motor connector to the RAMPS and plug it the other way around to reverse it. Before doing the test, turn off the 12V supply to the RAMPS and manually move the bed and the head in the middle. Also make sure that you can move the z axis in either direction.

The extruder stepper doesn't use an endstop so it should work as you observed.

I tried to manually move all the 3 axies and they move.

It really puzzle me, especially because the extruder is driven by the wrong pololu I really have no clue what to do next, I could try to move the pololu driver to another position, just to see if the others are fried. Any opinions on this?

Sounds almost like the Config file is set up wrong. Is the mother board set to 3 not 33

E is on pin 26 for Ramps 1.3

But X is on pin 26 for Ramps 1.2

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FFF Settings Calculator	Gcode post processors	Geometric Object Deposition Tool Blog
Tantillus.org	Mini Printable Lathe	How NOT to install a Pololu driver

yes the motherboard is set to 3
#define MOTHERBOARD 3

probably I need the settings for the version 1.2 where can I find them? Or does anybody knows what I should modify?


Do I need to upload all the sketches to the arduino or just the sprinter one?

Edited 1 time(s). Last edit at 08/04/2011 07:59PM by Kalle.

Kalle Wrote:
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> yes the motherboard is set to 3
> #define MOTHERBOARD 3
>
> probably I need the settings for the version 1.2
> where can I find them? Or does anybody knows what
> I should modify?

This is correct then.

But your symptoms show it has the wrong sketch uploaded.

> Do I need to upload all the sketches to the
> arduino or just the sprinter one?

Download the newest Sprinter and start over. ( keep a copy of the old if you like ) [github.com]

Put the entire sprinter folder in your Arduino Sketchbook folder.

Make sure Pronterface, ReplicatorG, Repsnapper, etc are closed.

Connect the Arduino/Ramps to the USB port.

Open the Arduino IDE.

Open sprinter through the Arduino IDE.

Upload the sketch to the board. (you may need to press the reset button as with all arduinos)

When it finishes with-out errors

Re-test with Pronterface.

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FFF Settings Calculator	Gcode post processors	Geometric Object Deposition Tool Blog
Tantillus.org	Mini Printable Lathe	How NOT to install a Pololu driver

Thanks Sublime! It works now.

I understood what the problem has been in the first place, I uncommented these lines
// uncomment one of the following lines for RAMPS v1.3 or v1.0, comment both for v1.2 or 1.1
// #define RAMPS_V_1_3
// #define RAMPS_V_1_0

it's supposed to be done just for V 1.3

I was having the same problem of this guy.
[forums.reprap.org]

Thanks again. Now I just need to solder one cable and I am ready to print!


One more question: in the prusa the X and Y positive run towards the motors?

Edited 1 time(s). Last edit at 08/04/2011 09:18PM by Kalle.