If the motors are wired together and one is slowing down then it sounds like a wiring issue. Check the wires are right against the ramps board and the connectors are correct. I would also try slowing down your speeds until the problem is gone and then working your way back up to a better speedby gmckee - RAMPS Electronics
You have a generic Ramps 1.4. The extruder fan is hooked up to D9 if you are running single extruders, or for constant power can be hooked up to a straight 12v rail. You can also hook it up to the GREEN in the picture. The RED is your main input. Put your power supply wires here. Notice ramps boards have two separate channels of power, hence four connectors, two Positive, two ground. Finally, theby gmckee - Reprappers
It sounds like some pins have got switched around or something similar. Make sure you use the newest Marlin release and give the instructions in this video a shot-Youtubeby gmckee - RAMPS Electronics
This Video tells you exactly how to set up Octoprint.by gmckee - RAMPS Electronics
I have had my Prusa i3 that I built by sourcing parts myself. All together I spent around 400ish USD to get all the parts. Here are some things I learned: 1) Don't Plug things in with the power on. I learned this the hard way. I ended up destroying my Arduino and Ramps board, as well as had some bad stepper drivers which leads me to #2 2) Be very cautious on buying electronics (or kits) on Ebay,by gmckee - Reprappers
QuoteThose little drivers can't handle 2A. If they got "extremely hot very quickly" you may have destroyed them. Look into higher current rated drivers such as this. I agree. A4988 drivers can only handle about 1 amp, with proper cooling somewhere around 1.5 amps can be attained. Try changing your drivers to drv8825. They can handle 2 amps without cooling easily.by gmckee - Reprappers
Yep. No firmware adjustment neededby gmckee - General
They are referring to the method that cools the section of the hotend between the hot end (part that melts the plastic) and cold end (where the plastic enters the assembly and where it is mounted to the carriage. Air cooled hotends use small fans to blow air across a heatsink to carry heat away from the cold end whereas water cooled use a jacket around the cold end that has water pumped through iby gmckee - General
Give this video a shot. It helped me get mine workingby gmckee - RAMPS Electronics
I am assuming you already tried to adjust the contrast, mine has a very touchy contrast know to where bumpin the lcd will mess it up.by gmckee - RAMPS Electronics
I am using a typical wades extruder and really like it. It provides both more torque and finer extrusions than a direct drive. If you decide to make one, print out herringbone gears to minimize backlash.by gmckee - General
That will work fine as well as offering plenty of power for expansions later on such as multiple extruders. 700 watts is plenty to run both the 5 amp and 11ish amp circuits on a typical ramps board.by gmckee - General
I would try running the Ramps test code. It tests heaters and the motors. It helped me figure some of my issues out as well as verifying the Ramps is O.k.by gmckee - General
If whatever axis you plug the stepper into doesn't work it is most likely the driver or the tuning of it.by gmckee - Prusa i3 and variants
I am planning to start using auto bed leveling but the setup im using puts the probe outside of the bed when homing. So, I am looking to home the X and Y axis, move the X carriage in about 30mm, home the Z axis, then initiate auto bed leveling. So would G28 X Y //Home X and Y axis G1 X175 //Move the X carriage to 175mm (Home is 205) G28 Z //Home Z axis G29 //Initiate auto bed level be correct foby gmckee - General
Were you able to upload firmware to the controller? If so make sure your baud rate is correct and you have the correct Com port selected as well.by gmckee - Prusa i3 and variants
I have a Prusa i3 with a Wades Extruder as pictured. I want to add auto bed level to my current extruder and want input on people who have done it before. I am looking at using a Endstop with a micro Servo to move the probe up and down. Running marlin firmware, how hard is it to do?by gmckee - General
Your Axis won't move beyond your physical limits on your printer. Until you home the axis the printer doesn't know how far anything can move before colliding with anything. It only moves a certain distance as it assumes it has moved 200mm and will not move beyond the physical limits of your printer. // Travel limits after homing #define X_MAX_POS 215 #define X_MIN_POS 0 #define Y_MAX_POS 21by gmckee - Prusa i3 and variants
In your firmware make sure you have the correct steps per mm. Steps per mm Calculator Next, make sure jumpers are underneath the stepper driver. Then try the driver on another axis and make sure it works fine. Also, check that the motor connectors are the same orientation. I would also check for solder bridges underneath the Ramps board are not shorting anything out. Hopefully one of those thinby gmckee - Stepper Motors, Servo Motors, DC Motors
First thinga First; I noticed your power supply isn't grounded to mains power. It would probably be good to get that fixed, too many things can go wrong. To your issues: I'm not familiar with the controller board you are using bit have a few suggestions/questions. Have you tuned your stepper drivers as the wiki describes. Also some boards, like the ramps 1.4, have two 12v inputs. Motor power couby gmckee - General Mendel Topics
Turning on and off the power supply by use of wall or switch shouldn't matter. I would say at this point to try plugging in components one at a time, turning off the power before plugging the next component in. Take your time. It could be another driver, I had a bad driver that was shorting out the whole system and replacing it solved my issues. Sorry that you are having such a hard time though.by gmckee - RAMPS Electronics
This Video helped me set up mine. Also the contrast knob is very touchy. Bumping mine can mess up the contrast making text unreadable.by gmckee - Prusa i3 and variants
QuoteAlso, do you think that powering on the atx, and then connecting it the board could solve this problem? Never plug or unplug anything with power on. I learned this the hard way. Furthermore, check that you have no solder flecks shorting things out under the ramps board, an all to familiar occurrence on cheap Ramps Boards. The power supply shouldn't be an issue as long as it is reading 12v wby gmckee - RAMPS Electronics
The Extruder motor will not turn unless the hotend is heated up to at least 180C I believe. Make sure it is heated up to at least that temperature. There is a Gcode command to disable this but I dont remember what it is, look at the reprap gcode page for more info.by gmckee - Prusa i3 and variants
Seems like a lot of headaches come from those folger tech printers. Anyway, have you tried moving the Z motor by plugging it into the X to confirm it isn't a bad driver, does your motors move when they are homed, and lastly what error are you getting?by gmckee - Prusa i3 and variants
You could run two or more nuts onto it and tighten them against each other. Clamp onto the nuts with a vise, drill with drill press.by gmckee - General
It sounds like you're describing the heatbreak. Teflon are lined on the inside with Teflon tubing which can break down at around 250c I believe. All metal aka stainless steal doesn't include Teflon lining. The specific type used in your printer should be replaced with the same. Look for a plastic tube inside to see if its lined or not.by gmckee - Prusa i3 and variants
The wiki should have all the info on printed parts in section 6, that's all that is needed for the main assembly. Also make sure to get the parts for your extruder.by gmckee - General Mendel Topics
This may seem to be a dumb question but have you installed or checked for the jumpers underneath the stepper drivers for microstepping? All three should be installed for 1/16th using a4988 steppers. Also another dumb suggestion, are your motor pots tuned to correct voltage?by gmckee - RAMPS Electronics
Auto Bed Level I don't have any experience with Auto Bed Leveling, however, Thomas Sandladerer's Video above has good directions about setting everything up including firmware. It may help you with your issues.by gmckee - RAMPS Electronics