And for the extruder, swap that motor with another one (in the wiring, like y or x axis) to check it isn't the motor. I think the extruder can't be manually moved in ponterface, but during prints works. Vague recollection.by marnargulus - Sanguino(lolu)
You can invert the endstops in the firmware, then reload your chip. Or you can move your end stops, which if they aren't opto's is the easier option.by marnargulus - Sanguino(lolu)
Google translate failed with all the frames, but it looks like you can get some motors that will work from there. I would avoid the electronics, as we have developed and accepted standards in Sanguinololu and RAMPS. Plus it looks like the controller boards they use are ARM based, while everything in the RepRap community is AVR based. Summery: NEMA 17 Bi-Polar Motors from there will be fine.by marnargulus - Stepper Motors, Servo Motors, DC Motors
On re-read this makes less sense than in my head. Wire the motors in series if NOT using two boards. If you use two boards you need to wire them in parallel.by marnargulus - Stepper Motors, Servo Motors, DC Motors
Check your potentiometer on the driver board. You might just be under the power required to make it to the next step? Just a shot in the dark. Maybe swapping out the driver boards will tell you more?by marnargulus - Stepper Motors, Servo Motors, DC Motors
I've retyped this a bunch of times. I can't get the wording to come out nicely: Stepper motors will work better for our applications. The benefits of higher efficiency and higher RPM range are moot for our users. It can be done, it is a bad idea. And to answer to topics question: Servos require a sepearte encoder, which our boards would not provide. There may be a few Arduino sketches foby marnargulus - Controllers
Which way do you have the pololu's facing? With the usb facing you which side are the screw pots on?by marnargulus - Sanguino(lolu)
I know in Ubuntu I had to force it. Try forcing it, but rc=1 is a wiring error I think. Make sure you have pins going to everything on the ISP except the 5V, which you can get from the usb cable. (The usb cable will provide the power to the chip, but not do any of the data transmission).by marnargulus - Sanguino(lolu)
Next time you run a test print keep a record of the temp readings. You may have gotten too hot resulting in hardening of the plastic around the extrusion hole. I don't know why it would be a brownish color unless the heating were uneven.by marnargulus - General
Did you make your own cable? Pull out your multi meter and check for connectivity from connection point to connection point (board to reprap). If you use non-braided cable it may be cracked in the insulator.by marnargulus - General
Love it! Got any schematics for others to play with?by marnargulus - Controllers
Screw of polous to the right with the USB facing towards you. (for future reference).by marnargulus - Sanguino(lolu)
Good call Nelson, I don't think anyone has updated the electronics instructions concerning the usb auto reset since it was added.by marnargulus - Sanguino(lolu)
Does anyone have a recommendation for crimp terminals? I have a reel of the strip Molex style, where you need to bend and cut tabs off the sides to get it to fit into the plastic housing. I hate them. Rarely will the terminal slide into the housing and stay, often the spring mechanism will snap off. Is there a better style crimp terminal out there, or should I order a couple sets of pigtailby marnargulus - Controllers
chmod 777 will give you read/write access to all users on your machine.by marnargulus - Controllers
Instead of ordering a new 644p I would order a usb to serial adapter cable. Costs a few bucks more, but this doesn't sound like the chip is the issue. You can't get your computers to recognize the board. At this point you have the bootloader on the chip, and the completed board. This is NOT what you need to control the board, but IS what you need to load that information. Since arduino is hby marnargulus - Sanguino(lolu)
My bad, I was thinking it was written in Java for some reason.by marnargulus - Sanguino(lolu)
Yeah, these are new motors, and a set of ten shipped usually costs more than 5.by marnargulus - Controllers
Pretty sure it always runs in a VM, regardless of OS.by marnargulus - Sanguino(lolu)
Try that, or try running in XP mode (that's a thing, right?).by marnargulus - Sanguino(lolu)
So you were programming via an arduino or other ISP programmer?by marnargulus - Sanguino(lolu)
Can you describe your setup and the steps you took?by marnargulus - Sanguino(lolu)
Which wires and what model of opto did you get?by marnargulus - Controllers
When testing, go ahead and instal arduino and the FTDI drivers, plug everything in. Open Arduino, and load the sketch you are using. (Set all your settings, SD endstops etc board type). Compile it. Hold the reset button down for ten seconds, and while holding it hit the "upload" button in the Arduino IDE. When it pops up some text in the console area let go of reset and do your rain dance. Iby marnargulus - Sanguino(lolu)
Excelent, so if you already have a bootloader you should be able to put the usb in and load it that way. Try a few machines if it doesn't work the first time. I only use Ubuntu, so when Windows problems pop up I half-guess at what would make sense, and sometimes it works. Your computer needs the FTDI drivers (which are located in the Arduino IDE install directory, I think under a folder callby marnargulus - Sanguino(lolu)
Please explain in case someone else has this issue.by marnargulus - Controllers
If you have the time to wait China sells sets of 10 for 170 shipped (they will be labeled SAMPLE TEST EQUIPMENT or something like that) on Ebay. That is as good a price as you will get, as even the cheaper suppliers selling the NEMA 17 for 17 dollars add on a shipping cost of 10-15 dollars (and I think they get them from China anyway) Your country really dictates who will have the best power peby marnargulus - Controllers
Hold it down for 10 sec, counting slowly. The reset button trick doesn't always work, and is not consistent at all (as in it works sometimes and some people will never get it to work). That error also presents when you have the wiring wrong from the programmer to the ISP headers.by marnargulus - Sanguino(lolu)
Write unlock bit before and lock it after. Like your front door (unless you are canadian, I hear they leave them open)by marnargulus - Sanguino(lolu)