The printer cannot communicate with computer?
Check the USB serial chip at first:
http://www.geeetech.com/forum/viewtopic ... 21&t=60612
Firmware
1.How to upload firmware?
You need to upload the firmware via Arduino IDE 1.0.1.
If you upload the fw via Arduino 1.8.5 then you will get the error:
fops_t or X/Y/Z min pin redefine
http://www.geeetech.com/forum/viewtopic ... 20&t=17046
2. How to change the motor direction in the firmware?
http://www.geeetech.com/forum/viewtopic ... 17&t=17037
Cura Profile
Geeetech i3 printer
http://www.geeetech.com/forum/viewtopic ... 09&t=68464
Motor
1.Motor’s non-action
http://www.geeetech.com/forum/viewtopic ... 17&t=17038
2.Z axes cannot move properly
viewtopic.php?f=82&t=60931
3.The motor can move at one direction only
1)Check the wires of the endstop
- corrrect endstop.jpg (60.15 KiB) Viewed 25633 times
viewtopic.php?f=17&t=60927
3)Swap the a4988
Extruder
1.Extruder does not work normally.(The temp of it <180C ,it won't work because the temp protect)
http://www.geeetech.com/forum/viewtopic ... 19&t=17097
2.Hotbed/extruder is not heated up
http://www.geeetech.com/forum/viewtopic ... 19&t=17039
3, How to use the spare extruder slot?
http://www.geeetech.com/forum/viewtopic ... 20&t=18020
4.Hotbed/extruder has a MIN TEMP/MAX TEMP Error
http://www.geeetech.com/forum/viewtopic ... 23&t=17030
PID tuning
Tuning refers to the parameters adjustment of a proportional-integral-derivative control algorithm used in most repraps for hot ends and heated beds.
PID needs to have a P, I and D value defined to control the nozzle temperature. If the temperature ramps up quickly and slows as it approaches the target temperature, or if it swings by a few degrees either side of the target temperature, then the values are incorrect.
https://reprap.org/wiki/PID_Tuning
Level
1.Manual level
- 通用调平示例.jpg (50.77 KiB) Viewed 25631 times
Source
1.Information about the Mainboard: GT2560A/GT2560A+
http://www.geeetech.com/wiki/index.php/ ... GT2560A%2B
2.Schematic for GT2560 Rev A
http://www.geeetech.com/wiki/index.php/ ... 60_sch.pdf
3.Schematic for GT2560 Rev A+
http://www.geeetech.com/wiki/index.php/ ... evA%2B.pdf
4.The wires of GT2560A+
- GT2560A+.jpg (165.35 KiB) Viewed 25630 times
Upgrade
1.Add the filament detector for GT2560VA/GT2560VA+ board
http://www.geeetech.com/forum/viewtopic ... 349#p89349
2.Upgrade to Dual extruder
http://www.geeetech.com/forum/viewtopic ... 13&t=17887
3.Upgrade to TMC2208
1). Remove the MS3 of the jumpers off
2). Change the direction of the motor on configuration.h
http://www.geeetech.com/forum/viewtopic ... 17&t=17037
3). Upload the firmware to your printer
(being updated)
If this information cannot cover your problems, you can join our Facebook group, and get help from our technical support team or have a detailed discussion with other customers in time.