I am in need of some help.

3D Printing
, , ,
1

I am in need of some help. I have built a Prusa Mendel (i2) and have everything ready. The RAMP 1.4 electronics are connected and nicely wired up. I have loaded on the Marlin firmware onto it. I am able to test the majority of the controls using the LCD screen and controls. My problem is that when try to test the extruder nothing happens. All the other stepper motors are fine and I can switch the extruder onto one of the other stepper controllers and it works fine. So I know that the stepper motor works. I cannot work out what I am doing wrong.

Can someone point me in the right direction, please!!

2

marlin could be preventing cold extrudes. Try sending Gcode M302 then testing the extruder.

3

Yeah I agree with @Chapman_Baetzel its likely Marlin won’t let you extrude unless the hot end is up to temperature.

4

You need to watch the console/terminal output and read it. It’ll tell you why. You could have a broken thermistor thinking it’s over temp, or you could have cold extrusion prevented, etc.

5

I have tried send the M302 code and this didn’t help. I even got the hot end up to temperature before testing the extruder to see if this helped. But nothing seems to work. I have been running pronterface to run the test. When I watch the console I get no useful information. The printer seems to be receiving the commands fine. Any more ideas?