OK, I've spent a bunch of time tonight and made some great progress. (Thanks for the tips on this thread and a few others).
I think my biggest problem was pointed out in the post by Traumflug but I didn't recognize it at first. I was using the bootloader baudrate assuming that it was the same for any communication. But Marlin has it's own baudrate setting which by default is much faster than the bootloader.
Second problem was that the default baudrate for marlin is 250000 which is great and supported by printrun, but not by windows (or at least the drivers I found). Once I switched everything to 115200 (which has a note in marlin that it's not as stable unfortunately) I finally got some communication going. BTW, does anyone know how to get windows driver to work at 250000?
Once I had that and hit the reset button on the sanguinololu it would display a bunch of information in the terminal (I was first using putty but it also worked in printrun terminal). This pile of text ended with an error and it was complaining about extruder temp. I had unplugged everything so it had no temp feedback for the extruder tip. After experimenting with a few things it turns out that plugging in the thermistor for the extruder tip resolved that error.
After this I was hoping to be able to get the motors to move from printrun, but it still didn't work. I had suggested doing a firmware build without the LCD panel seeing as how that wasn't working and I couldn't plug it in so I tried uploading that and sure enough that did the trick. I could now use the quick interface in printrun to move all the motors and even get the extruder tip to heat up. So I think the basic pieces of the printer are now functioning.
If anyone has help on getting 250000 baudrate to work in windows please let me know. Also any tips on debugging the panelolu2 would be great (but I'll probably just start with my ohm meter and start checking for shorts and look at everything with a magnifying glass. Thanks!
I think my biggest problem was pointed out in the post by Traumflug but I didn't recognize it at first. I was using the bootloader baudrate assuming that it was the same for any communication. But Marlin has it's own baudrate setting which by default is much faster than the bootloader.
Second problem was that the default baudrate for marlin is 250000 which is great and supported by printrun, but not by windows (or at least the drivers I found). Once I switched everything to 115200 (which has a note in marlin that it's not as stable unfortunately) I finally got some communication going. BTW, does anyone know how to get windows driver to work at 250000?
Once I had that and hit the reset button on the sanguinololu it would display a bunch of information in the terminal (I was first using putty but it also worked in printrun terminal). This pile of text ended with an error and it was complaining about extruder temp. I had unplugged everything so it had no temp feedback for the extruder tip. After experimenting with a few things it turns out that plugging in the thermistor for the extruder tip resolved that error.
After this I was hoping to be able to get the motors to move from printrun, but it still didn't work. I had suggested doing a firmware build without the LCD panel seeing as how that wasn't working and I couldn't plug it in so I tried uploading that and sure enough that did the trick. I could now use the quick interface in printrun to move all the motors and even get the extruder tip to heat up. So I think the basic pieces of the printer are now functioning.
If anyone has help on getting 250000 baudrate to work in windows please let me know. Also any tips on debugging the panelolu2 would be great (but I'll probably just start with my ohm meter and start checking for shorts and look at everything with a magnifying glass. Thanks!