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Printing issues ...
Re: PLA print coming unstuck mid-print - 11 years ago
A 100C+ heatbed seems a little high for PLA. Back it down to 55-65C and see if it sticks better.....by vreihen - Printing
Re: Delta Rostock level calibration problem - 11 years ago
One person's Delta printer calibration error is another person's perfect bicycle seat model.....by vreihen - Delta Machines
Re: Export current EEPROM config? - 11 years ago
Repetier-host can read/export EEPROM settings, but I don't know if the function is limited to Repetier firmware or if it also works with Marlin.....by vreihen - RAMPS Electronics
Re: First print not working so well - 11 years ago
Ditto what cnc dick said about the USB cable having cross-talk and causing your checksum problems. Re-route it away from all power cords and motor wires. Also, use the shortest quality USB cable that you can get away with, preferably one with magnetic ferrules on both ends for additional interference damping.....by vreihen - Reprappers
Re: Ramps 1.4 stepper testing - 11 years ago
The metal braided wire is usually a sign of a thermocouple and not a thermistor. The RAMPS board uses thermistor inputs, because thermistors are cheaper and more common in RepRap projects. A K-type thermocouple can have higher temperature ranges, and is arguably more accurate...and more expensive. I believe that there is an add-on board for RAMPS that will take thermocouple inputs, and has oneby vreihen - Reprappers
Re: Megatronics V2- Inverted end stop damage IC2 - 11 years ago
My IC2 doesn't appear to have a hole in it, but I have not tested it to see if it is working. I am only confirming that my board could run without USB power at one point before it encountered a short circuit that broke the on-board 5V power. Since I have a PC sitting right next to it, I just chose to use USB power and not troubleshoot it any further.....by vreihen - Controllers
Re: Will upgrading to Arduino Due (from Mega) improve segments per seconds? - 11 years ago
Delta's obviously need more CPU power with all of the floating point math they do, and the Mega 2560 is really being pushed to the redline at 16 Mhz. The Arduino Due is a 3.3V board, and needs extra electronics to connect it to a 5V RAMPS board. Due also doesn't contain an EEPROM to store config settings. There are at least two RAMPS-style boards available for the Due that overcome these problby vreihen - Repetier
Re: Hotend Problems - 11 years ago
+12V power for everything but the heated bed comes off of the 5A power rail: http://reprap.org/wiki/RAMPS_1.4 As waitaki asked, did you check your +12V input power? The boards will happily run from USB power and appear to be live, but you will not have power to the stepper motors or hotend. Also, check the 5A power input connectors for signs of burning, which is another common problem.....by vreihen - RAMPS Electronics
Re: help help with megatronics v2.0 - 11 years ago
FYI, the Megatronics 2.0 board has two AD-597-based K-type thermocouple ports included on the board, in addition to the thermistor inputs. 99% of the printers being built will use the thermistor inputs, but this appears to be a hotend with a K-type thermocouple judging by the picture and attached specs.....by vreihen - Reprappers
Re: Megatronics V2- Inverted end stop damage IC2 - 11 years ago
My SainSmart Megatronics 2.0 encountered a short circuit due to a bad crimp on one of the external display ribbon cables. Since then, it will only run from USB power. I never wasted my time troubleshooting it. If I interpret the top left corner of the schematics page correctly, IC2 is probably the 5V voltage regulator, since pin #3 of that device is connected directly to pin #2 of the SRC12v jby vreihen - Controllers
Re: Hotend Problems - 11 years ago
Did you hook up the +12V power supply onto the 5A power input connector, or only to the heatbed 11A input?????by vreihen - RAMPS Electronics
Re: Running Marlin on Arduino without a Ramps Board - 11 years ago
115,200 baud?????by vreihen - Reprappers
Re: used different powerSupply now motors wont work - 11 years ago
What he means is that PC power supplies are meant to power PC's. Some of them have problems regulating +12V when they do not have a load on the +5V bus, which is usually how they are hooked up with 3D printers. The result is unstable power that could blow up your board. Hence, putting a hard drive or special dummy load onto the +5V bus to keep the +12V regulated: http://reprap.org/wiki/PCPoweby vreihen - Reprappers
Re: Where to get 20x20mm aluminum extrusion - 11 years ago
In countries where Misumi has an office, they not only sell most T-slot extrusions at a reasonable price but they will even cut it to your exact dimensions for free. Their USA operation even ran a special campaign a few months ago where RepRap users got a free $150 credit on their first order.....by vreihen - Extruded Aluminum Frames
Re: A new Reprap printer and my blog about it - 11 years ago
I found the images doing a web search, and do not know the copyright status of the source. (I work in academia, and consider it "fair use" in this situation.) The definitions that you're citing seem to have been written by academics. At least in American English, the things that screw into a threaded engine block to hold the cylinder head on are called head bolts, because they have a hex-shapby vreihen - Reprappers
Re: Funded Bounty: Create a configuration tool for RepRap firmware - 11 years ago
Except for sharing the source, doesn't the Repetier web config system qualify for doing all of this?????by vreihen - Bounties
Re: A new Reprap printer and my blog about it - 11 years ago
Your confusion on the hardware names between bolts and screws needs a bit of clarification. This is a machine screw, which is tapped to take a nut (versus a self-tapping wood or sheet metal screw that makes it's own threads as it is screwed in): http://en.wikipedia.org/wiki/Screw#Differentiation_between_bolt_and_screw You might find this drawing of various threaded fastener types useful forby vreihen - Reprappers
Re: can anyone explain the cause of this?? - 11 years ago
The only other things that I can think of are bad or "dirty" filament or possibly the hotend momentarily damming up because the fan isn't running or there's something loose or scored inside. I'll defer to someone with more experience with identifying print problems.....by vreihen - Printing
Re: Power clarification - 11 years ago
Both connectors are for +12V, as denoted by the yellow wires in the diagram you're referencing. The 5A rail is for the stepper motors and hotend, and the 11A rail is dedicated to the heated bed. (They split it up into two power rails so that you have the option of running the heated bed from +24V if you want.) The RAMPS board has the circuitry to derive +5V from the 5A rail, or it can pull theby vreihen - RAMPS Electronics
Re: can anyone explain the cause of this?? - 11 years ago
I believe that the common causes for this type of problem are unacceptable filament diameter variations (check with calipers at multiple places over several meters to ensure the filament diameter is stable) or possibly your filament spool binding up at one point in its rotation.....by vreihen - Printing
Re: Extruder motor doesn't turn - 11 years ago
You didn't happen to set Repetier's "dry run" mode for your testing? That could stop the extruder from working.....by vreihen - Controllers
Re: The old printers vs. The new wave - 11 years ago
My two cents is that you as an individual need to assess your own skills, the available skills pool of your friends, and most importantly what you want to use a 3D printer for before you can make any decisions. How mechanically inclined are you? What is your background in electronics and software? How deep is your toolbox with precision tools like micro-allen keys, wire strippers, soldering toby vreihen - General
Re: Vase printing issue - 11 years ago
I'm far from an expert on this, but my first guess would be that something is radically incorrect with the acceleration or jerk settings in either your firmware or slicer based on how it happens right after turning a corner.....by vreihen - Printing
Re: SainSmart Melzi - 11 years ago
I'm not familiar with the Melzi, but am wondering if there is a jumper on the board that prevents the firmware from being overwritten in a production device that you need to change so that you can flash it?????by vreihen - Next Wave Electronics Working Group
Re: Extruder motor doesn't turn - 11 years ago
Powers of two problems with stepper motors are usually related to micro-step settings in firmware or jumpers missing from your board. You didn't provide an exact measurement to work from, so I can't say if this applies or not. Did you try hooking up your extruder to the X axis connector on your board and see if it turns that way? This would rule out the firmware and a controller problem as posby vreihen - Controllers
Re: Affordable plastic shredder - 11 years ago
The town where I live runs a recycling center at the highway department garage, where residents drop off paper, glass, and plastic into big dumpsters and the town pays to have it hauled off and recycled. The town has a wood chipper parked at the highway department garage, that gets used to turn fallen trees into mulch. Me thinks that I'm starting to see a business opportunity here.....by vreihen - General
Re: Printer prints always 0.5 mm more - 11 years ago
QuoteJPT Don't you know Sesame_Street ? In german the theme song says "Wer nicht fragt bleibt dumm" -> "Anyone who does not ask remains stupid". Just as an aside, you may want to question the accuracy of the sub-titles you're watching on TV. The theme song (in its original Klingon) is: http://www.lyricsondemand.com/tvthemes/sesamestreetlyrics.html Sunny Day Sweepin' the clouds away On mby vreihen - Reprappers
Re: Should heating the hot end take this long? - 11 years ago
Did they use a 24V cartridge heater instead of a 12V one in this unit? I'd try wiring it directly to 12V for a test, and see if it heats up to 200C in under 3 minutes. This will eliminate your firmware and electronics as possible causes. If it doesn't heat up, buy a 12V cartridge heater (under $10 USD) or convert your electronics to 24V.....by vreihen - Printing
Re: Molex connectors - Help! - 11 years ago
I don't think that it is a Molex-brand connector, but rather a 0.1" spacing pin header plug. The Molex 2510 has the same pin spacing, and is the common keyed Molex connector used on stepper motors: http://www.tridprinting.com/Electronics/#3D-Printer-Connectors-Harnesses-Crimpsby vreihen - Controllers
Re: Extruder motor doesn't turn - 11 years ago
Did you tune the output voltages on your A4988's with a multimeter? The default Z movements in Repetier on a cartesian printer are slower than X and Y by default, and trying to drive two Z motors on one un-tuned A4988 may explain the missing Z steps.....by vreihen - Controllers