Sudden Problem with Ramps 1.4 and Marlin

Hi,

I have a sudden problem with my RepRap (Ramps 1.4, Marlin, Cura 13.03 & Cura 12.12A which worked before).

Until now it walked without any problems since 1/2 year. But from one to an other day it quit it`s job - at the evening it worked fine, on the next day every time an error occures. I don`t have any more ideas what`s the problem.

I can connect with Serial Console and Cura and I also can manually control my RepRap via Cura Jog - no problems, I also can change temperature - I also can send commands via serial console witout problems. But after I start printing an error occurs. Sometimes Cura shows "Error:Line Number is not Last Line Number+1, Last Line: 4". I tried connecting to an other computer - same problem - I updated to the last Merlin version - same problem - I changed baudrate - same problem. I`m at the end of my skills - perhaps there is anyone out who can help me.

I`m confused about the one to an other day problem - no changes - nothing.

Here the last error log:

Changing monitoring state from 'Offline' to 'Opening serial port'
Connecting to: COM6
Connected to: Serial(port='COM6', baudrate=250000, bytesize=8, parity='N', stopbits=1, timeout=2, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Changing monitoring state from 'Opening serial port' to 'Connecting'
Recv: start
Recv: echo: External Reset
Recv: Marlin 1.0.0
Recv: echo: Last Updated: Apr 12 2013 23:27:07 | Author: (none, default config)
Recv: Compiled: Apr 12 2013
Recv: echo: Free Memory: 4710 PlannerBufferBytes: 1232
Recv: echo:Hardcoded Default Settings Loaded
Recv: echoD card ok
Changing monitoring state from 'Connecting' to 'Operational'
Send: M105
Recv: ok T:93.8 /0.0 B:30.0 /0.0 @:0 B@:0
Send: M104 S210
Recv: ok
Send: M105
Recv: ok T:93.6 /210.0 B:30.0 /0.0 @:128 B@:0
Send: M105
Recv: ok T:96.2 /210.0 B:30.0 /0.0 @:128 B@:0
Send: M105
Recv: ok T:101.3 /210.0 B:29.7 /0.0 @:128 B@:0
Send: M105
Recv: ok T:107.7 /210.0 B:29.9 /0.0 @:128 B@:0
Send: M105
Recv: ok T:115.5 /210.0 B:29.7 /0.0 @:128 B@:0
Send: G28 X0 Y0
Send: M105
Recv: ok
Recv: ok T:123.1 /210.0 B:29.7 /0.0 @:128 B@:0
Send: G28 Z0
Recv: ok
Send: G28 Z0
Recv: ok
Send: G28 Z0
Send: G28 Z0
Recv: ok
Send: G28 Z0
Recv: ok
Send: G28 Z0
Send: G28 Z0
Recv: ok
Send: G28 Z0
Recv: ok
Send: G28 Z0
Recv: ok
Recv: ok
Recv: ok
Send: M105
Recv: ok T:149.3 /210.0 B:29.5 /0.0 @:128 B@:0
Send: M105
Recv: ok T:156.4 /210.0 B:29.5 /0.0 @:128 B@:0
Send: M105
Recv: ok T:164.2 /210.0 B:29.4 /0.0 @:128 B@:0
Send: M105
Recv: ok T:171.1 /210.0 B:29.4 /0.0 @:128 B@:0
Send: M105
Recv: ok T:178.3 /210.0 B:29.4 /0.0 @:128 B@:0
Send: M105
Recv: ok T:185.1 /210.0 B:29.4 /0.0 @:128 B@:0
Send: M105
Recv: ok T:191.9 /210.0 B:29.2 /0.0 @:128 B@:0
Send: M105
Recv: ok T:198.5 /210.0 B:29.2 /0.0 @:128 B@:0
Send: M105
Recv: ok T:204.9 /210.0 B:29.2 /0.0 @:0 B@:0
Send: G28 Z0
Recv: ok
Send: M105
Recv: ok T:211.8 /210.0 B:29.1 /0.0 @:0 B@:0
Send: M105
Recv: ok T:212.5 /210.0 B:29.1 /0.0 @:0 B@:0
Send: M105
Recv: ok T:212.1 /210.0 B:29.0 /0.0 @:0 B@:0
Changing monitoring state from 'Operational' to 'Printing'
Send: N0M110*3
Send: N1M92 E865.888000*65
Send: N2M140 S60.000000*95
Send: N3M109 S210.000000*102
Recv: ok
Send: N3M109 S210.000000*102
Send: N4M190 S60.000000*84
Serial timeout while writing to serial port, trying again.
Serial timeout while writing to serial port, trying again.
Unexpected error while writing serial port: SerialTimeoutException: 'Write timeout' @ machineCom.py:_sendCommand:476
Changing monitoring state from 'Printing' to 'Error: SerialTimeoutExcepti...'
Connection closed, closing down monitor
Unexpected error while writing serial port: SerialTimeoutException: 'Write timeout' @ machineCom.py:_sendCommand:476

Try a different usb cable.

If possible restore your computer to how it was a week ago. perhaps some module was updated that is incompatible with usb port or cura?

Hi,

@stephenrc-> Thanks you`re right - I changed the cable and all problems are gone. Crazy because I only switched one evening off and next day the error occurs without touching the cable.