Stepper driver a4988 getting hot too fast. Hello everybody, I just received my Ramps 1.4 from sainsmart, took me a littlewhile to figure out how to set everything. And here is my problem, the stepper of the z axis is getting hot, more than 60°c just from a 0.1mm move. I've tried other driver on the same socket other stepper motor, to miror on to an other driver (extruder1), to move it to extruder 1 as well. I try to set different voltage on the driver from 0.6 to 1.5volts, whereas other driver are fine and the steppers turns smoothly the z axis is still overheating. I guess the problem is not from my ramps or the arduino but from the firmware. I'm using the repeiter 0.92.4 with a xbox 360 power supply... Any ideas ? Cheers, Lucas. https://reprap.org/forum/read.php?1,563661,563661#msg-563661 Wed, 15 Jul 2026 15:57:05 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,563661,584803#msg-584803 Re: Stepper driver a4988 getting hot too fast. https://reprap.org/forum/read.php?1,563661,584803#msg-584803
Quote
lucas1414
Ok, definetly not the firmware! Now i've tried moving Z axis on the X driver and it works so the problem is on the board.
I don't know if arduino or ramps but I don't have any problems on uploading and the motors even if they are not spinning reveive an impulsion so I guess Ramp is faulty.
I've been checking all the solders and I can't see anything wrong I checked all the pins of the faulty drivers socket for shortcut ans compare them to the ones that works and not shortcut or poor contact...

What else can I check ?

Check the current setting on the driver board, as the previous reply suggested.]]> dc42 General Sun, 15 Nov 2015 18:49:30 -0500 https://reprap.org/forum/read.php?1,563661,584766#msg-584766 Re: Stepper driver a4988 getting hot too fast. https://reprap.org/forum/read.php?1,563661,584766#msg-584766 vimafeje General Sun, 15 Nov 2015 16:40:24 -0500 https://reprap.org/forum/read.php?1,563661,563709#msg-563709 Re: Stepper driver a4988 getting hot too fast. https://reprap.org/forum/read.php?1,563661,563709#msg-563709 I don't know if arduino or ramps but I don't have any problems on uploading and the motors even if they are not spinning reveive an impulsion so I guess Ramp is faulty.
I've been checking all the solders and I can't see anything wrong I checked all the pins of the faulty drivers socket for shortcut ans compare them to the ones that works and not shortcut or poor contact...

What else can I check ?

Those sainsmart board seems poor quality fabrication...:X

anyway thanks for your time!]]> lucas1414 General Mon, 28 Sep 2015 12:32:42 -0400 https://reprap.org/forum/read.php?1,563661,563689#msg-563689 Re: Stepper driver a4988 getting hot too fast. https://reprap.org/forum/read.php?1,563661,563689#msg-563689 gmckee General Mon, 28 Sep 2015 11:39:33 -0400 https://reprap.org/forum/read.php?1,563661,563661#msg-563661 Stepper driver a4988 getting hot too fast. https://reprap.org/forum/read.php?1,563661,563661#msg-563661
I just received my Ramps 1.4 from sainsmart, took me a littlewhile to figure out how to set everything.
And here is my problem, the stepper of the z axis is getting hot, more than 60°c just from a 0.1mm move.
I've tried other driver on the same socket other stepper motor, to miror on to an other driver (extruder1), to move it to extruder 1 as well.
I try to set different voltage on the driver from 0.6 to 1.5volts, whereas other driver are fine and the steppers turns smoothly the z axis is still overheating.

I guess the problem is not from my ramps or the arduino but from the firmware. I'm using the repeiter 0.92.4 with a xbox 360 power supply...

Any ideas ?

Cheers,
Lucas.]]> lucas1414 General Mon, 28 Sep 2015 09:57:15 -0400