Geeetech

yes I try it but nothing change

Is 0.58 got from A4988(the voltage between screw on A4988 and GND)?
How is it when you exchange extruder motor driver with x motor driver(A4988)?

You can control both extruder on Repetier-Host, referring to this page:
http://www.geeetech.com/forum/viewtopic.php?f=21&t=16512

yes I did all this ...

1/I checked every thing is ok only one drive ship I put to ex2 the voltage
for it max 0.58
2/ installed the firmware you sent successfully
3/ try to move extruder both at 240c with and without filament but no use
4/ put extruder motors to x axis and they working well
5/ in LCD extruder control show ...

I try it many times I get the same error arduino reading the board no issue but uploading I get error

installing not possible in ubuntu Linux can adruino get error can you help

temperature.cpp: In function ‘void manage_heater()’:
temperature.cpp:675:1: error: unable to find a register to spill in class ‘POINTER_REGS’
}
^
temperature.cpp:675:1: error: this is the insn:
(insn 95 94 97 4 (set (reg ...

yes I raised it to 180c but no extruding When go back home I will try to install the firmwar

thanks agine for your support.

I triad every thing in the forms but no use I think it's software issue, I have even switch the control ships but no extrude
can you send me the software for i pro c and how to install it my email is zx280f40@gmail.com
thanks for your support

thanks for your support

after assembly of the printer i pro c and start up only light from lvd