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Hi all

I am new to this forum, i come from Denmark and I am building a new 3D printer

Now i am running in to some problems and cod use some help
Op until now I have built the printer and sorted the wiring.

Now I am in the process of config the software and here is it I got I some trouble
The good news is that I have got the heating of the bed and extruder to work, the display and connection to PC are also working properly, but I cannot get the stepper motor to work properly.
The motor just buzzering an dos not move very well and the motor driver get very hot fast about 10 sec they are so hot I can’t touch them.

The wiring and the motor are connected according to the malefactor
Dos some of you got some ide on how to solve me problem

Here are my configuration
Board: Geeetech Rumba Controller board
LCD: LCD 12864 control panel
Stepper motor: 42BYGHW609
Motor Driver: Stepstick DRV8825
Extruder: J-head E3D v6
Extruder: Bulldog All-metal Extruder for E3D J-head MK8
Endstop: Optical Endstop Light Control Limit Optical Switch TCST 2103
Firmware: Mariln, (it is config according to http://www.geeetech.com/wiki/index.php/Rumba) “opens in new window”)
Head Bed: 300x300 mm 560W 24V
Power supply: Bord 12V and 5V, old 560W computer power supply

Best Regards
Bo

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You need to set the current on the 8825 drivers.

Use a jewellers metal screwdriver in the small adjustment screw slot. Connect a multimeter (set to volts) between the negative power supply (0V), and the screwdriver. Adjust the screw until it reads 0.5 volts. This will give a current of 1 amp, which is a nice safe setting for both your motors and drivers.

My drivers from the factory were set to a ridiculously high level, which caused similar issues.

Good luck.

1 Like
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Yeah definitely, you have to adjust the current or the motors will get extremely hot, that’s extremely important because if you don’t adjust then you’ll melt plastic.

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You have to keep few things in your mind before proceeding ahead with your invention specially the gap between the motor and plastic. Overall I liked the the idea and approach for this concept, students can learn a lot from these inspirational posts.

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Thanks for share!

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the nice game post thanks