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Support for the quite nice RAMPS Electronics. See also http://reprap.org/wiki/RAMPS.
Printing mess in one direction - 11 years ago
Hi folks, I am facing an annoying problem with my prusa mendel: low quality printing after some height... the problem is self descriptive with the attached picture, i believe. Any ideas of what might be causing it? I have tested: - X axis backslash (it looks fine); - all belts and bolts... - mechanical stability (even moved the printer to a very stable marble table); The movements look fineby Algol - General Mendel Topics
Re: Resistences on Pololu connector pins - 12 years ago
Oh, btw, thanks to wolfmanjm, os1r1s and Tom_itx from the #reprap IRC channel!by Algol - RAMPS Electronics
Re: Resistences on Pololu connector pins - 12 years ago
All the axis are working fine now. Hopefully there will be no other significant problems further ahead... Lessons learnt: - Be very carefull when soldering the connectors that came with the RAMPS' UltiMachine: internally, they leave an open space between the plastic and the board, thus if some solder passes through the PCB holes and fills this small gap it will short two pins (and you will neby Algol - RAMPS Electronics
Re: Resistences on Pololu connector pins - 12 years ago
Today, a friend and I dessoldered the R18 SMD resistance from the X-axis region of the RAMPS PCB. The multimeter reads ~10kOhms directly on the resistance, so we just cleaned the board and soldered it back. Now it reads about 10kOhms, just like in all other axis. Probably there was solder between the resistance and the PCB shorting the connection... Now I will solder the connector back and plugby Algol - RAMPS Electronics
Re: Resistences on Pololu connector pins - 12 years ago
Ok, I desoldered the entire connector of the X, Y and Z drivers (for the next version, the connectors could be splitted on three 8 pin connectors... it was not easy to desolder this 24 pins one - I shall thank PACE a lot!). The resistance between the Z-axis DIR and STEP points are completely open now, so basically the problem was originated on the connector. But on the X-axis, the problem remaiby Algol - RAMPS Electronics
Re: problem with hammering noise in stepper motor and not moving X-axis - 12 years ago
Just as nophead suggested in one of the messages above (possible short circuit), maybe the following post: http://forums.reprap.org/read.php?219,154737 that can be found on the RAMPS Electronics folder, may be related to this kind of issue.by Algol - Stepper Motors, Servo Motors, DC Motors
Resistences on Pololu connector pins - 12 years ago
Hi there, I am having some trouble with my Z axis (RAMPS 1.4). Sometimes it refuses to work (completely random occasions). Before that, I had trouble with my X axis as well. This was "solved" simply moving the X-axis Pololu to the second extruder): http://forums.reprap.org/read.php?160,151290,154247#msg-154247 But now, it looks like that this Z-axis problem may be somewhat related to the X-axiby Algol - RAMPS Electronics