Okay, so I’m using the Prusa i3 pro b and updated to the latest Marlin firmware which didnt work so I went back to the previous version. Now it’s homing in the wrong direction, going up instead of down when I try to print. The other problem is now even when I made changes to Configuration.h in Marlin, it wont upload at all. Gives me an error saying it’s not connected or doesn’t exit. I could really use some help here…
Set “INVERT_Z_DIR” to the opposite state. So if it is false, make it true. That will reverse that z axis direction.
For the no connection, make sure you have the right com port selected. Also check to make sure that the device is working and has the appropriate drivers. You may also want to try to manually reset the controller (by pressing the reset button) right after the arduino IDE starts to upload.
I’m using com3 and it shows up in device manager on Windows 10. The printer responds to every manual command in repetier host but it still says com3 doesn’t exist when I try to upload a sketch in Arduino
@Nate_Bee Hmmm. Are you closing out of repetier? Only one program can use a com port at a time. Maybe the program isn’t releasing it. Otherwise, it sounds like the arduino IDE is messing up and requires a reinstall/redownload.
@610GARAGE I haven’t tried that. I’ll do that and let you know.
@610GARAGE so i managed to get the firmware uploaded and then my LCD screen is frozen. I uploaded Marlin 1.1 at the time. I’ve reset the board(Mega2560) and still frozen. Smh.
@Nate_Bee Is the lcd screen enabled in marlin? Otherwise, the only thing I can think of is that your board is shot. Maybe try a new one? I’m not sure otherwise.
Here is how to enable lcd support within marlin.
http://reprap.org/wiki/RAMPS_LCD
@610GARAGE I found out it was the update that caused the LCD issue and I’ve since went back to using Arduino 1.6.8. The LCD is back to normal but now the printer doesn’t respond to commands in Repetier Host. The Baud Rates match and it shows it’s connected, but no movement at all unless I use the manual controls on the LCD.
@Nate_Bee What if you unplug the screen. Will it except commands from the repetier host? RAMPS can only take commands from one thing. I believe when it’s not printing, it should take commands from both the screen and computer, as long as there not at the same time. But I have never attempted this. The screen could be locking out the computer.