I suppose a good place to start would be how I go about measuring the current the current pot settings are putting? Thanks A kungfu mastahby a kungfu mastah - RAMPS Electronics
I got my RAMPS working, I bought one from reprapworld (i think), lot of ABS too. Works great, So far I have the X axis working great, Extruder motor/gear working (broke drill bit in MIG tip :< ). So I soldered together the harness for the two Z axis motors. They worked the first time, I adjusted the pot a little to the left, then all I got was shuddering, a bit of spinning and backward spinniby a kungfu mastah - RAMPS Electronics
For the motors there are pairs of wires. Check the continuity on them, when they are shorted, those two are a pair. The pairs go side by side in the socket, as long as the pairs are not mixed it should work. Reversing the location of the pairs should reverse the direction of the motor.by a kungfu mastah - RAMPS Electronics
I would like to add that I just got these motors in a few days ago and they do work. I am still adjusting the pots but they handled the z and x axes so far. They have not even begun to get warm either.by a kungfu mastah - RAMPS Electronics
Sublime is correct, the print that article is for v1.2, try sprinter firmware for 1.3by a kungfu mastah - RAMPS Electronics
I currently do not have the resistors installed. I have smd resistors, will they work or do I need full size ones? I checked if the 5v and ground holes located underneath the endstops, they did not short. I also checked the 5v on the top of the double header, with the ground on the bottom, they did not short either. Again I do not have any resistors installed at this time.by a kungfu mastah - RAMPS Electronics
I will pull the MOSFET today. I did not remove it, I took it out and put it back correctly. Could it be the resistors? EDIT: for archival purposes, if someone else needs to pull a MOSFET the desoldering iron pump combo at radioshack works surprisingly well. 10x easier this timeby a kungfu mastah - RAMPS Electronics
I will place the parts order tomorrow. I will report back once I have installed them.by a kungfu mastah - RAMPS Electronics
I have looked at my diode. When I installed it I don't think I even thought about polarity, but from what I can see I believe I did install it in the correct orientation. It's hard to see but the solid line on the diode is on the right side, which looks like it's over the thick side of the line on the PCB. Also this is a v1.2 PCB. It seems I purchased it while 1.3 was being produced. I may alsoby a kungfu mastah - RAMPS Electronics
jcabrer Wrote: ------------------------------------------------------- > Are you saying that you cannot communicate with > the Arduino if the RAMPS is ATTACHED? Exactly. Kind of weird huh, I also noticed I could not upload firmware to the Arduino with RAMPS attached. I got my firmware on without RAMPS attached, and everything went smoothly. My firmware seems to be loaded correctly, sinceby a kungfu mastah - RAMPS Electronics
The capu firmware I loaded was set to 115200, so I used that. I've found that I can connect to the Arduino from rep snapper if I don't have ramps attached. I also noticed the ramps led does not light up. However if I connect the 12v line without USB, the Arduino does get power.by a kungfu mastah - RAMPS Electronics
I will try the carukip firmware. I have a question about rep snapper. I start it, and sometimes need to plug it in while rep snapper is running. After selecting the correct com port, the "connect to printer" I press the connect to printer button and it goes bright green, then back to dark. Am I correct in assuming this should not happen? a kungfu masahby a kungfu mastah - RAMPS Electronics
I have just finished my ramps 1.2 and am trying to get it up and running. Will it hurt ramps to plug the power in after the upload is complete?by a kungfu mastah - RAMPS Electronics
I had some but the second part was dried out. Lucky I got enough for the power resistor. I got alumina because I'm on a budget ^^by a kungfu mastah - Plastic Extruder Working Group
The last of the artic silver was used to mount the power resistor. I purchased some of the alumina for heatsinking the pololu drivers. Will this be sufficient for the aluminum block to brass coupling?by a kungfu mastah - Plastic Extruder Working Group
Thanks, so the thermister controls the current to the power reisister, which is what generates the heat correct? Also what adhesive should be used between the aluminum block, and the brass coupling? A kungfu mastahby a kungfu mastah - Plastic Extruder Working Group
Hi, my first prusa is almost ready to start printing (need a cap, MOSFET, and endstops). I have my hot end essentially done, I am using wildseyed simple hot end. I have the power resister mounted to the aluminum via heatsink compound. But I am unsure of how to mount the thermister. Where and how should it be mounted? Thank you A kungfu mastahby a kungfu mastah - Plastic Extruder Working Group