226 Reply by william.green145

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Re: RUMBA board- how to do complete setup, including firmware and wiring?

I tested the main power voltage during heatup and printing.

Board on but no heaters or steppers moving: 12.3V
Extruder heater on full: 11.3V
Extruder heater on and steppers moving: 10.5V

At this point, the board froze. So I got a 500W power supply and tried the same thing.

Board on but no heaters or steppers moving: 12.1V
Extruder heater on full: 11.9V
Extruder heater on and steppers moving: 11.8V

At this point, the board froze again. I don't imagine 11.8V being too low for the board. The 500W PSU has 40A on the 12V line, so that should be plenty, right?

227 Reply by wardjr

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Re: RUMBA board- how to do complete setup, including firmware and wiring?

Is there a voltage adjustment on your PSU?  The Rumba will handle up to 36 volts doe if you can turn it up.  If not then I'd look at your connections between the PSU and board.  You can and should run separate (from PWR MAIN) wires from the PSU to HB PWR.
In short, those voltages look too low to be reliable.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

228 Reply by heartless

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Re: RUMBA board- how to do complete setup, including firmware and wiring?

agree with wardjr - your voltages are running a bit low under load. You want them to maintain 12.5v or better under load.

This isnt the best picture, but it is what I have at the moment. The yellow wires are my ground wires (black) but it is what I had available at the time. The wiring has since been updated and is much neater now. =P
The power feed for the heated bed is jumpered from 2 terminals on the PSU to make sure it is getting enough juice.

I (and many others) use a SuperNight LED type power supply rated at 12v, 30Amp. It has a trim pot to adjust the output voltage if needed (pointed out in the photo)

Hopefully this helps you out a bit with where the power & heated bed wires should be connected

http://soliforum.com/i/?kiiA7q0.jpg

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

229 Reply by william.green145

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Re: RUMBA board- how to do complete setup, including firmware and wiring?

Thank you for your help!
I found a power supply which supplies 19.8V at about 10A. I'm still experiencing the "freezing" problem with the motors. The motors seem to lockup when attempting a test print. After the extruder heats up and the motors home, all the motors appear to freeze up. Nothing happens. I'm currently examining my firmware looking for errors. I will upload a new copy of the current firmware to google drive for you to see (please tell me if you have any hints to what the problem might be)...
https://drive.google.com/file/d/0B821h2 … sp=sharing


Here are some pictures of the new power supply...

http://soliforum.com/i/?bdAPYTa.jpg
http://soliforum.com/i/?VFiwNF8.jpg

As you may have guessed, the new power supply will not allow me to wire the heatbed to it directly. I will need to somehow wire the heatbed to the motherboard. You had mentioned a jumper on the board to set the heatbed. Where is this jumper located? What terminals should I wire the heatbed to?

Thank you so much for your help smile

230 Reply by wardjr

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Re: RUMBA board- how to do complete setup, including firmware and wiring?

Voltage is one thing but you've done nothing to change all the other components to handle that much.  Going from 10.5 to 19 is not something you want to do.  For your set up it should be between 12 & 13.5 Volts with an amperage rating greater than 15 amps more is better. Either way you are not providing enough current with those brick PSU's.  Look at the pictures heartless provided and make it make sense to you.  Basically the HB PWR needs power going into it just like MAIN PWR. All I was saying is you could jump from the same wires that feed main PWR given you have enough power to do that and you don't.
Here's the bad news, none of this has anything to do with your connectivity issues.  That problem is most likely a bug in your particular version of RH.  Or a bad USB cable.  Or your computer going to sleep or running some update or anti virus software in the background.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

wardjr's Website

231 Reply by heartless

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Re: RUMBA board- how to do complete setup, including firmware and wiring?

http://soliforum.com/i/?oLhuyuY.jpg

I found a power supply which supplies 19.8V at about 10A

This is bad. unhook that thing from your printer - NOW!

seriously, go order one of these:

http://www.printitindustries.com/collec … wer-supply

and don't forget the power cord to go with it (select from the drop down menu on that page).

then wire things up like in the picture i posted above.

in regards to things "freezing up" - what version of RH are you running? on what operating system (computer)?
Do you have the screensaver and "sleep" modes turned off? (they need to be)
I can almost guarantee you it is NOT a firmware problem...

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1