most 3d printers have all parts designed around the dimension of a nema 17, to change it is a big job Look around your area for computer and printer recyclers, bigger places that are user friendly. BUT know what your after nema 17 only defines the X and Y dimensions It doesn’t define the length or the strength, or the size of the mounting holes or even bipolar vs unipolar, or spindle size, noby Dust - Stepper Motors, Servo Motors, DC Motors
Most 8 bit controllers use 3 jumpers to control the micro stepping, most of these are hidden under the stepper driver as you normally don’t change them (some boards from china have even gone so far as to add tracks so its always 1/16th micro stepping) If you want a graphical lcd, then I also recommend a 32 bit controller for that as 8bits can stutter while updating the glcd.by Dust - Mechanics
injection moulding is for when you want hundreds of millions of a part Reprap parts change far to often and the demand isn’t that high. Also most parts would need to be redesigned as they are not suitable for injection mouldingby Dust - Reprappers
If you have switch type endstops, most require PULLUP's enabled 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 its a min endstop, if its on the right its a max endstop On Y axis, if a endstop is on the back its a min endstop, it its at the fronby Dust - Prusa i3 and variants
The resolution is dependant on the steppers, the pulleys and the micro stepping (up to a point) See and throw in some random settings Most Cartesian use 8 tooth 2 mm pitch, which is 5micron resolution on X and Y Changing from 1.8 degree steppers to 0.9 degree steppers will double your resolution, but will also halve your max stepper speed on 8bit electronics, they just cant put out enouby Dust - Mechanics
Endstops are normally triggered when the switch is open, I would guess you simply have a bad connector somewhere in the endstop/cables/ramps/mega and its momentarily going open circuit. This could also be electrical noise if your motor wires are two close to endstop wiresby Dust - Reprappers
This is a issue with your hot end thermistor. It can't read any sane value from it so it stops everything till its fixed. Repetier should be showing you the hot end temperature somewhere, this should be room temp before you start heating. If you have a multi meter unplug the thermistor plug from the board and take a resistance reading threw the cables and thermister, its should read around 100Kby Dust - Prusa i3 and variants
If you just want on and off (even PWM) you can just connect it to a IO pin (with suitable electronics) and control it with the m42 command Can only use unused pins though, normally used pins are locked out to stop sillynessby Dust - Firmware - experimental, borrowed, and future
picture? But it sounds like you your Y axis upside down... Here is a random x axis, the m5 nut traps are at the top, and gravity holds the plastics over them.by Dust - Mechanics
The stepper circuit is quite simple Where step, direction and enable are all directly connected the the mega MS1, MS2 and MS3 are the micro stepping jumper pins, they get connected to +5v or are disconnected (jumper off) I would firstly check the soldering around the Z driver socket and the stepper plugs on the ramps. And check the ramps mega pin connectors (in particular d46, d48 and a8)by Dust - RAMPS Electronics
All diagrams showing stepper wiring colors should be taken out back and shot! No two steppers from different manufacturers have the same colors, and even sometimes they differ from batch to batch from the same company. from another post I did 15 days ago... For movement you need steppers drivers in the correct way (can be plugged in backwards or off by one very easily) 12v on the 12volt 5amby Dust - RAMPS Electronics
Which end is up to you But if its at the front then its a Max endstop and has to be plugged into the max endstop plug and configured to home to max ie in marlin firmware you need to set #define Y_HOME_DIR 1 Now if when you home it goes the wrong way you need to invert direction of movement, by either turning your stepper plug around 180 degrees or find #define INVERT_Y_DIR and change from truby Dust - RAMPS Electronics
version 2.0 is Nightly builds, beta software Maybe try a stable version like 1.0.9 I don’t know of anyone using that on a reprap... I would use proterface at this stage, its known to work well Re endstops... particularly the Y axis people wire it wrong... a standard I3 type design, the Y min endstop is at the back, the Y max is at the front. Make sure you set your firmware to match yoby Dust - RAMPS Electronics
a loose jumper might randomly change the micro stepping,,, but it would just randomly move to far or rattle nosily The stepper circuit is quite simple Where step, direction and enable are all directly connected the the mega MS1, MS2 and MS3 are the micro stepping jumper pins, they get connected to +5v or are disconnected (jumper off) I would firstly check the soldering around the Z driby Dust - Prusa i3 and variants
You haven’t mentioned if you set the vref's correctly... which is the most likely cause If it to low the steppers arent strong enough and just skip steps, if its to high the drivers over heat and skips steps.. another option is that that pulleys are spinning on the stepper shafts, put a black mark on the pulleys and shaft, after testing check the line still lines upby Dust - General Mendel Topics
Or the fan is just plugged in backwards But yes some fans require a small capacitor across the terminals to do PWM at slower speeds First try turning it on full speed M106 S255, if this doesn’t stay on, check you have the correct polarity.by Dust - Reprappers
That sounds about right, some pins you can pull 40ma... but still way shortby Dust - General
Stick the ramps on a scanner (remember those?) , take high res scan of the bottom and topby Dust - Reprappers
Thats just odd... Things that come to mind.. 1) you have a SD card with an autostart file eg for marlin "If there is a file auto0.g, the printer will recognize it while booting, and perform its content." 2) the motherboard type is set incorrectly in firmware for your board, causing random signals to be sent to the wrongs pinsby Dust - Reprappers
you would have to check how much current each pin can provide and make sure the fan used less than that. not recommended your aux-1 is the same configuration as as a ramps aux-1 so in theory you can just plug in a RRD fan extender and just use normal 12v fansby Dust - General
In the mean time You should remove the driver modules and try the board without them. It wont be able to move the steppers, but this is just to see if the controller keeps goingby Dust - Reprappers
What are your steps/mm ? if they are very large numbers you may just be exceeding the power of the controller (cant send enough pulses fast enough)by Dust - General
Fill in the directory location I don’t believe it searches for you, it just uses the info you enter.by Dust - Firmware - mainstream and related support
So basically, you have no idea what your doing... Heated bed issue can be: not enough current in the power supply, needs minimum of 20amp not full 12v getting to the bed (check it with a multimeter) bad wiring (as in wires to thin to carry the required 11amps) bad connectors on the motherboard Connecter on the motherboard not screed down firmly. Under the bed not insulated (so your just tryingby Dust - Reprappers
That image is so tiny. There is not enough detail to seen nearly anything. BUT from what I can see there is no power going into the ramps. The large green plug is the power plug. There are two parts to it the 5amp and the 11amp circuit. The 12v 5amp part powers everything. Hotend, steppers, mega (when usb is disconnected) There should be 4 thick wires going into this plug from the power suppby Dust - Reprappers
check your #define DEFAULT_MAX_FEEDRATE {300, 300, 5, 25} settings also in eeprom which will override firmware settings (M503 to display them)by Dust - General
Shorter normally has less torque, you want lots of torque in an extruder.by Dust - General
you probably have a short on your mega most common cause for this is having your mechanical endstops plugged in backwards, this connect +5v to ground via the switch second most likely is you have your stepper driver plugged in backwards. pololu modules and drv8825 modules go in opposite directions if your using the pot to orientate the device. Identify pins 1B, 1A, 2A and 2B make sure they aby Dust - Reprappers