RUMBA board- how to do complete setup, including firmware and wiring? (Page 1 of 10)

Update: RUMBA is successfully powered on!  I removed the drivers from the board first and nothing is hooked in yet.  Installed the drivers and found it on COM5.  I want to make sure I got the right drivers.  I got this board with the upgraded drivers:

http://www.reprapdiscount.com/electroni … v8825.html

Which of these is the right drivers?

http://reprap.org/wiki/File:RRD_RUMBA_T … rSetup.zip

or

http://reprap.org/wiki/File:RRD-RUMBA_USB_DRIVER.zip

Well, I think I installed both of them so hopefully one of them is correct!  Any ideas?  Is there even different device drivers for the RUMBA with the DRV8825 drivers (that I have) or the A4988?

1.0.5 of Arduino is fine
The board is 80

Here is the firmware you'll want

Firmware is uploaded and the printer connects via repetier!

How does the jumper to choose 1/16 or 1/32 work?  I don't see any info on that on the reprap wiki.  It looks like there are three jumpers beneath each driver.  I assume it defaulted to 1/16, but which ones do I move to make it 1/32? 

Also, maybe a dumb question, but there are three pins for each end stop and only two wires.  I assume it goes in the positive and negative positions and I just leave the other (hard to read but I think it says "S") empty? 

I'm getting close, thanks for your help so far!

Okay, I have made some progress but still got a few issues to work out.

Everything powers on and the extruder and bed both heat to their targets temps and stay there!

Everything moves, but not the way that it should.

Z axis seems to work fine.  When I press the up arrow on the repetier manual controls, it goes down but that is what it did before installing the RUMBA too.  I just assumed everyone's printer did this, is that correct?

X axis has issues.  Pressing the home button actually moves the carriage a few mm to the left, away from the end stop.  Manual left/ rights seems to work but it is having issues with the end stop, which might be that it for some reason thinks the end is right in the middle of the axis but I can't tell it to home correctly because it is out of whack and doing something else when I tell it to home the axis.

Y axis moves correctly but it is not seeing the end stop at all.

Okay, so here is some more info.  The reprap wiki shows the motor wires in the following order: red-blue-green-black.  Hooking everything up in this order resulted in all of my axis moving in the wrong direction, except the extruder which was correct.  I noticed the plugs that came with it had the wires arranged blue-red-green-black so I switched the red and blue for the X,Y and Z and now the move in the right order.

I had heard about people having the extruder moving the wrong direction, and it seems like I would have that too if I hooked it up correctly, but by switching the red and blue I have (hopefully) found a work around to messing with the firm ware. 

Next up, I will try messing with the end stop wires to get those to work correctly.  Wardjr, you had mentioned some type of jumper that had to be done to these?

I know my motors do not sound right, so I'm also going to need to tune those drivers.  I found the page where solidoodle talks about doing it on the sang board but my drivers look way different so I don't know where to put the multimeter.  I do have a nonconductive screw driver.  Trying to find more now...

Edit: I did find the section for the jumpers beneath the drivers on the reprap wiki.  I set the extruder to 1/32, and I'll update EEPROM when I get everything else working and do a full calibration.  End stops still giving me a hard time.

Okay, more progress and more learning.  Thanks Lawsy!  The printer was moving towards the max position when the end stop was at the min (or was it vice versa?), so it wasn't finding it.  But does it matter if I have the X and Y end stops plugged into max or min, as long as I set it in repetier to match where it is going on the board?  I'm not sure if it would throw off my entire printer shape or something.

Also, my X motor was super hot, 90 degrees C on my infrared thermometer!  I immediately unplugged it when I noticed this. I think the stepper trim pot is way off causing it to run too hot.  Does anyone know how to adjust these on the RUMBA?  I'm not even sure if I turn it counter clockwise or clockwise.  Is there a procedure anywhere that shows where to hold your multimeter and what the voltage values should be?

Also, the extruder fan is not operable at all.  I tried it in both 12V fan plugs.  Do I have to write custom start and end G-code to get it to start?

I have never sent the printer a manual command before.  I see the G-code line under manual controls but typing M119 into there and hitting send does absolutely nothing.  What am I missing?

Ugh, there is always something breaking.  When I had my Z motor reversed, I accidentally moved it to far against the stop and broke the Z-screw mount.  I've got someone to make me another one... but there goes another couple of days waiting for the mail to get here again...

Okay, so I don't think I've got my end stops set the same as you but maybe there is more than one right way to do it as they all seem to work on mine, but I have yet to do a test print because I am waiting on the damn replacement Z-screw holder.  All my axis home the right way, at least.

It looks like you have the X end stop into the X- posts, Y end stop into Y- and Z into Z-.  What are you settings in repetier for homing the axis?  (Config > Printer Settings > Printer Shape).

I've got my X end stop into the X+ plug, and homing towards the max position.  Same for Y.  Z plugs into Z- and homes towards min position.  I'm thinking that if the stops are reversed but the homing direction is also reversed, it might do a mirrored print.  Or it might just work fine, I really don't know.  But if you can send me your settings in repetier, we can compare.

Also, do you have your extruder fan plugged into the fan 0 or fan 1 pins?  How about your board dan and LEDs?  Does the extruder fan turn on as soon as the board is powered?  Do I have to adjust the jumper that is positioned next to the fan connectors?  I can use either the pins or the screw terminals, right?  The orange light for fan0 is on for me.

I've made some progress tuning the stepper drivers by ear.  Basically, if they get really hot I turned them down but if it sounded like it was struggling, I turned it up.  I would like to figure out how to do this with a multimeter, though.  I'm so ready to start printing, really need that Z screw mount to get here!

Wardjr, thanks so much for going above and beyond to help me get this board up and running.  I am also probably going to want to pick your brain when I do the E3D upgrade in a few more weeks, so I want to gift you a roll of ABS filament for your trouble.  Please PM me with your address and preferred brand and color that is available on Amazon and I'll get it in the mail for you.  I won't take no for an answer.  Thanks!

I am not very good at editing photos but you get the idea.

I already have someone sending me a new one and it should be here tomorrow or Thursday.  Yes, I could rig something up and I would have if I had not otherwise ran out of time to mess with the printer over the weekend.  But I should be good there.

I'm still getting nothing out of my extruder fan and I have it plugged into the fan1 pins just like you.  I started heating the extruder and it still does not turn on.  There is no polarity to this, right?  I tried both directions anyway.  How about the jumper near these pins?  I also tried both positions there and I still got nothing.  I can't see your jumper position from the photos. 

Not really a question, but that extruder motor sounds damn good with the 1/32 microstepping!  I did a extrusion length calibration and I was way over my target extrusion length when I doubled the steps/mm in EEPROM, so I'll keep working on that.  I'm not really sure how to tune the stepper driver on the extruder, but I assume if I get my target length and it is not getting too hot, I should be good.  The set steps/mm in EEPROM is not affected by the tuning of the stepper driver, right?

Hopefully just another day or two until I am up and printing....

I'll check my fan polarity when I get home.  I was moving the axis too, so I don't think that is it. 

I measured out 40mm for it to extrude, told it to extrude that much and my mark disappeared to somewhere between the top of the printed MK5 extruder parts and the geared wheel, so estimated 10mm and almost 25% over my targeted extrusion length.  Agreed that it seemed like a lot.

To set this stepper driver to 1/32, I looked at the reprap wiki.  I saw that the extuder 0 drive was set to 0-0-1 at the jumpers below the board, so I moved it to 0-1-1 to get 32 microsteps/ step.  Is this right?  My extruder motor just sounds better, although I know that seems hard to understand unless you have heard it in person.

I will also check for voltage across the pins when i get home.

Okay, I checked for 12v across the fan1 terminals with my multimeter and I am getting nothing even after moving the motors and heating the extruder.  Same for fan0 terminals but the LED port above that gets full 12V!  So I will wire my extruder fan into that for now until I can figure out what is going on.  The only other thing I can think is that I have a firmware issue (maybe it is seeing both as G-code fans?) or a defective board (seems highly unlikely).  I will keep researching...

As for extruder calibration, I seem to have it dialed in at 212 steps/ mm.  Might just set it to 210 because there is always error by hand.  Actually, I was running at 138 before and I was not over extruding.  But now, 276 was WAY over extruding.  Such is 3D printing, I'll just be glad it works!

Now I'm rigging up something to work as a Z stop until my new one gets here tomorrow because I really want to get a print out of this thing!

Hmm... It looks like I am using a slightly different version of Marlin because mine looks a little different (see attached).

Keep in mind I am trying to get my extruder fan to work at the moment, although I guess I want the controlller (stepper driver) fan to do the exact same thing (still need to print a mount for it once printing).  So I think I need to find which pin should replace the -1 that I have highlighted and put that pin number in both the controller fan and extruder fan codes?  Looking at the reprap wiki at the line starting with #define fan_pin ... might be pin 7 to make the fan1 pin on the board get powered whenever the drivers move.  Do you know the pin assignment for fan1 on the board?  Keep in mind, there is no pins.h in the latest version. 

So now I just need the pin assignment for fan 1 on the board.