Swapping the stepper wires around while the board is on will kill the pololu drivers 99.5% of the time.by Dust - Sanguino(lolu)
I cant get that error you see.... I've ordered from them before. but not recently. I don’t have any spectra, Im a firm believer in belts. From what I read on the IRC channel Spectra stretches to much... (ie you need to tighten every 3 months or so)by Dust - Stepper Motors, Servo Motors, DC Motors
Or someone local could print him a new extruder block for a jhead... As we do have printers!by Dust - General
just go for the standard $74.61USD or $90NZD(approx) including shipping Know to work well on repraps, and no issues getting to New Zealand Re 0.9 vs 1.8 degrees.. If your running a standard Cartesian (I2, I3 etc) with 1.8 at 1/16 micro stepping using gt2 belts and a 16 tooth pulley = 100/mm ie 10micron resolution the same thing with .9 you get 5 micron resolution. Ie you will never notby Dust - Stepper Motors, Servo Motors, DC Motors
Clean 1) disconnect everything, pull out modules and 644p/1284p chip that aren’t soldered in. 2) clean off all the soap... not sure of the best way to do this, but probably an isopropyl alcohol bath 3) dry thoroughly, leave in hotwater cupboard for at least 72 hours Test Plug the board into the computer without modules and 644p/1284p, the computer should still recognize the board as a serialby Dust - Sanguino(lolu)
you need something like this Also comes in laser cut wood... (cant find one quickly, myne came from makergear.com) Then you just screw them togetherby Dust - General
I recommend minimum 4 standard ATX cable leads for the bed. Per cable... so 4 yellow and 4 black. (20 AWG on myne) 3 maybe be enough if you have some of those high current 4 pin 12v connectors (18AWG on myne) You dont want those wire to heat up at all, as it will reduce the power getting to your bed. Also make sure your screw terminals are tight. Cable must not be a loose connection. Loosby Dust - General
Have you seen One of the local guys is building one of theseby Dust - General
Glass? No, never... ok they might haveby Dust - General
Well this statement of Bs. proves your not at all serious with your question. Continue ravaging the planet citizen.by Dust - General
Your printing with ABS, a nasty petrochemical by product and your worried about this?, enough said? Some people are having great success printing directly on glass. No chemicals, no tapes, no sanding. I print PLA, renewable corn starch derivative, directly on warm glass also.by Dust - General
Oh, some ramps serial info you may need (not checked as 100% accurate yet, was quickly done at lunch time at work) There are 4 ports on a atmeg 2560. 2 RXD0 PE0 ( RXD0/PCINT8 ) Digital pin 0 (RX0) serial over usb 3 TXD0 PE1 ( TXD0 ) Digital pin 1 (TX0) serial over usb 45 RXD1 PD2 ( RXDI/INT2 ) Digital pin 19 (RX1) Z-Mby Dust - Firmware - mainstream and related support
I've gone just with serial for now. (there are 2 that you can use on a standard ramps, 1 less if you have a LCD, but if you have max end stops... none are available) Only tested this on a Sanguino 644p so far (Its what I had laying about) should work on any Arduino that the neopixel library supports Next is to hack Marlin to talk to it....by Dust - Firmware - mainstream and related support
In pronterface. Connect to you printer Under the main window, next to the send button is a small area to enter text. Enter m119 in that window and hit the send button. It will reply with the end stop status as the machine see it.by Dust - RAMPS Electronics
Neopixel needs very precise timing, so does the reprap firmware for moves or you get blobs. In my view the two are not compatible on a atmeg type processor, just not enough cpu power. (Haven’t actually tried this, but wouldn’t want to break reprap timing just for some LED's, just not worth it, im also using 60 leds, not just 8) However... I have been working on a little project to solve thisby Dust - Firmware - mainstream and related support
If I understand you, you want the configuration of your firmware from your existing firmware If you have eeprom enabled all you need to do is send the printer a m503 This will list all configurable parameters. If you don’t have eeprom enabled, this command will return nothing and there is no way to recover the settings.by Dust - Firmware - mainstream and related support
Atmega2560 has jtag support But its turned off so the pins can be used for other things You can pick up a cheap jtag interface from , also see for someone elses write up of jtagby Dust - Firmware - mainstream and related support
cross posted for those that don't read google groups I’ve just recently gotten interested in smoothie and porting to Arduino Due really appeals. (even though I've contributed to the smoothieboard kickstarter) It looks like there has been no progress on this so.. I've started in the hopes that others will contribte their expertise to the project From the read me. "An attempt to Port Smoothieby Dust - Developers
Check you endstops with status m119, if endstops are triggered, you cant move in that direction. Also check you have plugged in Z end stop correctly. If you plug in a mechanical Z endstop on + and - the board will crash when the endstop is hit. (also shorts +5 to gnd) Which looks like a disconnect.by Dust - RAMPS Electronics
1) throw away all guides that use colors. All stepper motors use different colors. There is no standard. 2) Find out which wires make up one coil. Use a multimeter and find out which wires are connected together. 3) Connect 1 coil to pins 2a and 2b, connect the second coil to 1a and 1b 4) if motor turns the wrong way, you can either swap the coils over (ie turn the plug around 180 degrees) orby Dust - General
Any more details? like whats wrong with it?by Dust - New Zealand RepRap User Group
Why? Because most people aren’t technically minded and would rather buy a complete calibrated and working machine. Ie they want an appliance Sadly curiosity and innovation and a thirst for knowledge is still discouraged while rampant thoughtless consumer like behaviour is encouraged. Their loss in my view.by Dust - General
Yet another person trying to get on the reprap band waggon. 1) laser cut wood is dreadful, looks like shit, stinks for months 2) At mega based controllers are at end of life. Most machines can now exceed their limits. Arm is the future, at least from my point of view. 3) "Input Voltage: 12V" most want 24v or more now. 4) no provision for second or third extruder. There is nothing here that iby Dust - Controllers
.28 is quite high for a .35 nozzle. General rule is never higher than 80% of nozzle thickness I tend to use .2 or .25 layer height for a .35 nozzleby Dust - General
It all sounds good. I would check that you have 12v going into both the 11amp and the 5amp part of the ramps , and not 5v into the 5amp connector. This wont hurt it, but wont work. Also check your pololu driver are in correct way! Find the 4 tracks going to the steppers, they are normally nice and thick, and make sure they are closest side to the motor plugs. eg here on a real pololu you canby Dust - Stepper Motors, Servo Motors, DC Motors
In your other spamming you say $92 But you can get the new version for $89 from And please stop spamming, its darn right rude!by Dust - New Zealand RepRap User Group
Could be firmware, as in wrong thermistor tables or type. Could be a faulty ramps, there are a few components... Could be faulty ramps ADC pin. Swap the HBP thermistor cable with the hot end thermistor cable, Does the fault move? or stay? (now put it back before you forget)by Dust - Controllers
Sounds like a short in the thermistor or cables. Unplug the thermistor cable and measure the resistance... Should be about 100k at 25c.by Dust - Controllers
Using Latest Marlin and arduino 0023, under linux (just in case it make a difference, It shouldn’t) I downloaded latest marlin with git clone Edit configuration.h Set Motherboard #define MOTHERBOARD 63 comment out PIDTEMP eg //#define PIDTEMP enable SD with #define SDSUPPORT I get Binary sketch size: Binary sketch size: 63092 bytes (of a 63488 byte maximum) I don't have a melzi toby Dust - Controllers
Have you guys seen reprappros They are using a second controller board as a slave board to drive their extra extruders for more details.by Dust - Controllers