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Anything related to printer controllers not being Duet, RAMPS or Sanguinololu: microprocessors, motor and heater driver circuitry, gEDA/KiCAD issues, soldering tips, etc.
Re: Extruder Steps per mm - 12 years ago
Sublime, I actually did! Before when it was working better I did have it at a higher temperature. I increased it back up to 215, and I seem to be extruding reliably again. Thank you! Now I just need to figure out what to do about all this plastic coming out! There's way too much of it, something must be wrong. I'm going to keep playing with settings in Skeinforge hoping I find something that worby NJC - General
Re: Extruder Steps per mm - 12 years ago
So, I took a step back and made sure that I had the E_STEPS_MM set correctly. It turned out that a value of 150 gave me good results. Then I hooked up the hot end and did a test print. The hobbed bolt is unable to push the filament anymore, and it just slips during the print. Even setting the Flow Rate Setting in Skeinforge to 160 from 210 or the Feed Rate to 12mm/s, doesn't seem to slow down theby NJC - General
Re: Slanty Cubes! - 13 years ago
The spool is probably about .5 pounds at this point, and I hand fed it for a while to make sure it wasn't the spool. Plus the problem moved to the Y axis when I switched the motors. I'm still stuck on this one, I'm probably going to rebuild the circuit soon hoping to fix it. I hope I can figure out a solution before it comes to that.by NJC - General
Re: Slanty Cubes! - 13 years ago
I am really at a loss here. I tested the opto through a run with my scope and the opto is not a problem. I upgraded the firmware to the Sprinter FW (Sprinter (the new Marlin FM from mendel-parts.com), and the problem still happens. I don't think it is the firmware. I have double and triple checked the servo circuit and everything seems to be fine, yet I am still getting slanted prints.by NJC - General
Extruder Steps per mm - 13 years ago
My printer is an SAE Prusa, with Wade's Extruder, printing PLA at 220C. I am using a custom Gen6 electronics, the new Sprinter (the new Marlin FM from mendel-parts.com) and my current extruder steps per mm is 50. Using Pronterface, I try to extrude 50mm and the filament moves about 1-2cm into the cold end, yet when I print using this setting it seems as if there is WAY too much plastic coming ouby NJC - General
Re: Slanty Cubes! - 13 years ago
Well, I think I ruled out a mechanical problem. I tested this by driving the X-axis motor with the Y-axis driver, and the Y-axis motor with the X-axis driver (I also switched the end stops). Now the slant was in the Y direction and not the X. This leads to me to believe that it is an electronics problem. I ended up replacing the driver chip for the X-axis; this solved the twitching problem I hadby NJC - General
Re: Slanty Cubes! - 13 years ago
thanks for the link! a very good read. interesting information too, I definitely will be playing more with the temperature and other settings than I thought I would. I did try changing the power to the stepper, and it stayed the same regardless of the power I had it at. I went from where it wont move reliably because of too low power, to having it shut off because the chip gets too hot. Since nby NJC - General
Slanty Cubes! - 13 years ago
I just finished building my Prusa and have been printing cubes for about two days now. The prints are very reliable, i.e. I have the same kind of problems each print. I was wondering if you all could help me out with solving my print problems. My Setups: SAE Prusa Wade's Extruder Custom Gen6 Electronics Green ABS PLA printing at 238 C I have a few problems, but the largest one is that the Z axiby NJC - General
Re: Wanted: J-Head Hot End in USA - 13 years ago
Thanks for the reply! Too bad they dont sell the individual pieces of the extruder. I already have a TON of resistors, thermisters, and tubing. Though, once my extruder needs replacing, I now know where to go! Thanks again!by NJC - Wanted
Re: Wanted: J-Head Hot End in USA - 13 years ago
John, did you end up having success with the new hot end? I have been looking all over for a J-Head nozzle in the US. Brian, are you still selling J-Head nozzles? If so, I would definitely be interested.by NJC - Wanted
Re: Stepper Motor Problem - 13 years ago
If I could delete this post, I would. I figured out the problem. I used the wrong resistor for the Gen6 circuit. I misread the .22 ohm resistor as 22 ohm. Wooops. Sorry about that. NJCby NJC - Controllers
Stepper Motor Problem - 13 years ago
My build has screeched to a standstill because all of my tests with the stepper motors have failed. I am using Gen 6 electronics with Pololu stepper motors. To test the steppers I hooked up one stepper to the extruder driver and am using Repsnapper to move the extruder. The electronics and firmware seem to be working properly too. When I click the "Run Extruder" button, the stepper motor clickby NJC - Controllers
Re: Alternative for the H21LOB Opto - 13 years ago
Thanks for the link! Earlier this morning I actually found that the Gen6 firmware has a version specifically for the TCST2103, so I think it will work just fine.by NJC - Controllers
Alternative for the H21LOB Opto - 13 years ago
I have just started building a Prusa Mendel (have ordered almost all the parts!) and am now to the point where I need to buy the Optos. I have decided to go with the Gen6 electronics and cannot seem to find the H21LOB optos anywhere but mendel-parts.com. According the Mouser and Digikey, this part is now obsolete. I was wondering if anyone knew of any alternatives to this that are compatible witby NJC - Controllers