find the appropriate pins.h files and swap the pin numbers around, re compile and upload. NB D8 uses the 12v 11amp power plug, so you will power plugged in there.by Dust - RAMPS Electronics
I read and re-read tojape's post and I can see the area he means.. As he says with a multimeter check continuity from +12v on the 5amp line and the pin D1 of the aux-1 plug (while ramps is off of the mega and completely unplugged from everything) It should be open circuit. But his egs where shorted.by Dust - RAMPS Electronics
Thats probably short, it goes to max temp in the thermistor tables. Got a multimeter? unplug the thermistor from your board set your MM to ohms, most read about 100k in a 25c room.by Dust - General Mendel Topics
The Lcd mounted up the front has longer than normal cables, anyone know how long they are? > 300mm is all I know so far... would guess 370-380 ish area Can anyone confirm this? Thanksby Dust - Prusa i3 and variants
Just wondering if there is anyone in NZ with a real Mk2? I'm after some details from a real one, so I can complete my MK2 upgrade kit to full printer conversion, with less educated guesses and more facts. Can anyone assist?by Dust - New Zealand RepRap User Group
could be I would removed everything form the ramps that is removable... and try that If that still fails check the ramps board for blobs of solder that are out of placeby Dust - RAMPS Electronics
blinking Axis are not "not found" this is axis has not been homed. The controller has no way to know if you have pololu modules installed or not back up a bit... remove pololus and endstops try now, if m119 responds. If it does slowly add things back in.by Dust - RAMPS Electronics
"what am I doing wrong." screaming into the void of the internet without providing any information and expecting miracles. Please provide type of display (links to where you got it from), images of how you have it connected. Dumps of configuration files.by Dust - Firmware - mainstream and related support
Should be able to flash firmware with ramps attached. I do this all the time I would check you don't have you endstops around the wrong way causing a short Or perhaps your pololu modules around the wrong way motors is one of the last things to test.. My testing order is plug in the mega and ramps via usb, no other power, check thermistors and endstops, ie thermistors should read room temps,by Dust - RAMPS Electronics
I suspect once you have cleared up the voltage regulator remains and wicked off the solder and given it a good scrub with isopropyl alcohol it will be fixable. I don’t know the "Atmel Flip" but anything you can program as a AVR ISP will work (since these devices only need 5v for programming, any small 5v micro in theory will work if you can get the software, but I have only used other megas andby Dust - General
Those tracks are gone! scrape the carbon away, clean up the board and work out where it used to go Solder the chip down to the remaining pins, and solder thin wire to the disconnected pins and attach to where it used to go. Looking at the top picture, and the rumba cct Its pin 6 which is missing, and its un used. So no need to replace the track. I presume you understand that you will need toby Dust - General
You haven’t install the microstepping jumpers under the pololu driver modules 3 jumpers are needed for each driver to set 1/16th micro stepping.by Dust - Reprappers
You need older slower smaller SD cards I find anything over 8Gb seems unstable, and even then some brands just dont work. most of the newer larger capacity cards no longer correctly support SPI mode... re the display, Check the cables are around the same way as your first ones. Some suppliers started supplying lcd's with cables that are backwards (and keyed so you can't turn them around)by Dust - Reprappers
or address the real issue and replace the acrylic with something better.by Dust - Reprappers
a disconnected endstop is still a triggered endstop (for normally closed endstops) Yes you need to get your endstops under control posted this about a million times, and here comes million +1 To setup your endstops follow this: Correctly identify what endstops you have on your machine This is for i3 type machines where the bed moves in Y direction. On X axis, if a endstop is on the left iby Dust - Reprappers
You probably want to reduce your micro stepping. Thats to many steps/mm for a 8 bit ardunio type controller. "0.5 mm thin printed wall" might still be IR optically clear, wrap it in tin foil.by Dust - Reprappers
Sorry no. The dc jack on the mega only goes to the voltage regulator on the mega generating 5v. There would be no voltage on the stepper vmot pinsby Dust - RAMPS Electronics
wow, ive never heard of that happening on 1.75.. good to know since im just starting transitioning from 2.85by Dust - General
This is one of the reasons 1.75 is becoming more popular than 2.85by Dust - General
Drop in is unlikely, they come in different lengths. at best you would have to adjust your z endstop What you really need to look at it hows it mounted Take a look at It lists a lot of types and their mount type It look like you might have a J-Head MK I (1 in top picture)by Dust - General Mendel Topics
Digital IO pins are (more or less, some tolerances) only for 0 or 5v in or output Analog IO pins are only for 0 to 5v in or output. For the hotend you need a mosfet to turn the 12v on and off The thermistor is just a resistor that changes value when heated. You do use an analog in pin, But you don't tend to read it directly... see Also take a look at the ramps circuit diagram for how its doby Dust - General
Your "local scrap yards" are amazing... Around here you have dead car yards and lots of places recycling metals Anything nice like t slot joe public never gets to see... It goes to the recyclers whom wont let you look at what they haveby Dust - General
tricky. most current designs do not scale up well. Also everyone wants everything and for zero dollars. what would you customize? Build area is obvious but then what? color, shape, smell?? These are all just marketing b/sby Dust - Let's design something! (I've got an idea ...)
Some fans just will not PWM.. Some can be fixed by adding a capacitor across the fan power inputsby Dust - Firmware - Marlin
you don't cut and past you create the file with M28 you hit print, and its send everything to the sd card. no waiting, no movies You then close the fileby Dust - RAMPS Electronics
Most just put a thick wire link on the board in place of the polyfuse and put a real fuse in a inline fuse holder on the cable to the bed.by Dust - Reprappers
You load it into the arduino ide. Compile it, and upload to your hardware Its replacement firmware but it just moves the the steppers, and turns on mosfet. its not smart in any way... NB This will wipe your current firmware, make sure you know enough to put it back.by Dust - Stepper Motors, Servo Motors, DC Motors