My Prusa Mendal has been out of commission for a long, long while and I finally traced the problem down to some weirdness in the electronics (Sanguinololu). So I replaced it with RAMPS. Setup has been pretty smooth, and the X/Y axis seem to be working well, but I'm getting strange behavior on the z-axis. First of all, it moves much, much slower than I recall being normal. Secondly, when clickingby conanh - Reprappers
Thanks everyone for their guidance. The issue ended up being two-fold: 1) my power supply started to go bad and is only outputting 10.7V instead of the 12+V, and 2) I had the order of the stepper wires messed up. So after using another power supply, testing/changing/testing/changing/testing the wire order (http://reprap.org/wiki/Stepper#Shortcut_for_finding_the_proper_wiring_sequence), and triby conanh - Sanguino(lolu)
I've been making really slow progress, but finally got the the stage where the Prusa is built, steppers are attached, half of the wiring is connected, my Sanguinololu (1.3a w/ Pololus) is done, the bootloader is burned and firmware (Sprinter) is uploaded. I can even connect to it with Pronterface. Currently, I just have the X & Y steppers hooked to the Sanguinololu, and they move when whenby conanh - Sanguino(lolu)
For anyone having similar issues... Flux is essential. After alternating brushing some on then touching each lead/pad a couple of times, I got board #1 working just fine. #2 isn't working still, but it looks like I've got way too much solder on it, so there's likely a bridge somewhere I still haven't gotten rid of...by conanh - Sanguino(lolu)
Hi. I'm building a couple of Sanguinololu boards and am stuck, with both, at the FTDI chip stage. After soldering the chip + associated capacitors then plugging each into my Mac via USB: - board #1 doesn't do anything (i.e. doesn't appear in the System Profiler or in /dev ) - board #2 results in an error stating that the USB device is drawing too much current so has been disabled I've checked aby conanh - Sanguino(lolu)