Extruder motor stop working during print
I have a problem with the lates version of repetier firmware, ramps v1.4 and Arduino Mega, with a cartesian printer with 2 extruder.
After a random time of printing, the extruder stop working. I tried printing only with E0 or E1, but the motor stops after 40 to 80 minutes. I tried to change the driver, change the vref, put a fan overbthe driver, over the motors, even if both motors and drivers never went over 35C.
So I passed to Marlin. Same STL, same HW, and the problem disappear. Do you have any idea?
After a random time of printing, the extruder stop working. I tried printing only with E0 or E1, but the motor stops after 40 to 80 minutes. I tried to change the driver, change the vref, put a fan overbthe driver, over the motors, even if both motors and drivers never went over 35C.
So I passed to Marlin. Same STL, same HW, and the problem disappear. Do you have any idea?
Comments
I'll wait for a new controller, SainSmart 2 in 1 to make a further test. Also I notice that with the actual RAMPS + Arduino 2560, with Marlin I don't have any problem to use it at 250000 bps, with Repetier I have to use it at 115200 bps. About the decoupling I didn't see any message on the log. At the next test I'll check. But the problem is that to make a test I need to run a long print and if it stops I loose time and filament.....
I discovered that the problem is Repetier Host.
I tested with marlin firmware and also with Repetier firmware. During the Printing process I start having these errors :
Error:checksum mismatch, Last Line ....
If I print the same GCODE form the SD card I don't have the problem.
I have Windows 7, 64bit.
Reading in some other forum, with the new version of repetier, there are a lot of people that start having this problem. Someone solved using Pronterface (and this confirm that the problem is on Repetier host )
Did you changed something from the previous version on the communication protocol?
Yes . I have the graphic display.
Just for your information, I checked with Baudrate at 115200 and at 250000. In both cases I had random errors.
The strange thing is that I have the error with both repetier firmware (most frequent) and with Marin firmware (less frequent).
The last u8glib library I can find is the V1.17 dated December 2014. Do you have another library?