Micro Stepping Issue I am having a problem with MicroStepping my stepper motors.. I took a video.. watch for yourself, and tell me what you think the problem might be. Stepper Motor Details: MFG: SHINANO P/N: STH-39G120 NEMA: 16 COIL: 1.2 ohm TYPE: 2 Phase Uni-Polar 6 lead 3.6 Degree step angle. 5mm dia. X 9mm serrated steel shaft. 4 M3X 0.5 metric mounting holes. 4" leads. SQ.: 1-1/2” L: 1-1/4” WT: .36 That's all the info I have regarding these stepper motors... sadly.. These are the Driver Boards I got: http://www.amazon.com/dp/B00E7O5O8I/ They are set to 1/16 Micro Stepping Mode, however, I get the same issue in 1/4 and 1/8 mode. Here's the video showing the problem: http://youtu.be/oFSmAZPV9Ds https://reprap.org/forum/read.php?160,380114,380114#msg-380114 Sat, 14 Mar 2026 05:20:47 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?160,380114,600341#msg-600341 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,600341#msg-600341 If the jumper is missing, ie you just have two metal pins the signal is set to be low.

Eg the image above is set High, High, Low, and if you look at the table above that that is Eight stepping.]]> Dust Stepper Motors, Servo Motors, DC Motors Thu, 24 Dec 2015 03:51:46 -0500 https://reprap.org/forum/read.php?160,380114,598145#msg-598145 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,598145#msg-598145 wiki.shapercube.com]

]]> Frans@France Stepper Motors, Servo Motors, DC Motors Fri, 18 Dec 2015 05:55:50 -0500 https://reprap.org/forum/read.php?160,380114,598089#msg-598089 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,598089#msg-598089 yogesh.dp Stepper Motors, Servo Motors, DC Motors Fri, 18 Dec 2015 00:48:14 -0500 https://reprap.org/forum/read.php?160,380114,595383#msg-595383 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,595383#msg-595383
Eg for ramps see the colored jumpers below



Set as desired following this table


High == jumper on.
]]> Dust Stepper Motors, Servo Motors, DC Motors Fri, 11 Dec 2015 04:55:59 -0500 https://reprap.org/forum/read.php?160,380114,594920#msg-594920 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,594920#msg-594920
Quote
Dr. Bogger

They are set to 1/16 Micro Stepping Mode, however, I get the same issue in 1/4 and 1/8 mode.

how to set 1/16 micro stepping mode ? please help !!]]> yogesh.dp Stepper Motors, Servo Motors, DC Motors Thu, 10 Dec 2015 04:29:40 -0500 https://reprap.org/forum/read.php?160,380114,594903#msg-594903 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,594903#msg-594903
any help, much appreciated !!]]> yogesh.dp Stepper Motors, Servo Motors, DC Motors Thu, 10 Dec 2015 02:44:41 -0500 https://reprap.org/forum/read.php?160,380114,382671#msg-382671 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,382671#msg-382671 Then imho try change the battery to a atx psu. The battery is ideal power source only on paper, in practice it has internal resistance, and the stepper puts it on short circuit. Also the resistance is just a simplistic review, for the custom motor try check the inductance, if its higher than normal value for this resistance, that could be a reason for the behaviour. If all else failed to sove the problem, maybe try changing the motor, in case you have some other motor to do this test with.]]> NoobMan Stepper Motors, Servo Motors, DC Motors Mon, 14 Jul 2014 06:39:33 -0400 https://reprap.org/forum/read.php?160,380114,382458#msg-382458 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,382458#msg-382458 I have checked the resistance, and it's aprox. 1.3 Ohms per coil.
I have not tried running it half-coil yet.. Should I?
The LiPo battery I am using is 11.1 Volts.

Any other suggestions?]]> Dr. Bogger Stepper Motors, Servo Motors, DC Motors Sun, 13 Jul 2014 14:59:33 -0400 https://reprap.org/forum/read.php?160,380114,382434#msg-382434 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,382434#msg-382434 I see your motor is unipolar 6 wires, so have you tried using only half of coils instead of full coils. Although that probably wont help as motor resistance is already kind of low. Cant read the voltage on that supply but if its too low like 5v or so maybe current wont reach the correct values in due time, that could be fixed with an atx 12v psu supply. If it does that with 12v supply maybe the coil resistance is more than 1.2 ohms, you can double check that because custom motors dont follow datasheet, so different specifications for that motor its not out of the question.]]> NoobMan Stepper Motors, Servo Motors, DC Motors Sun, 13 Jul 2014 13:47:09 -0400 https://reprap.org/forum/read.php?160,380114,382331#msg-382331 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,382331#msg-382331
This stepper motor is 3.6 degree step angle, so it has a larger stride than most motors.
This motor so I was told, was custom made for IBM.]]> Dr. Bogger Stepper Motors, Servo Motors, DC Motors Sun, 13 Jul 2014 10:08:09 -0400 https://reprap.org/forum/read.php?160,380114,382321#msg-382321 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,382321#msg-382321 NoobMan Stepper Motors, Servo Motors, DC Motors Sun, 13 Jul 2014 09:31:57 -0400 https://reprap.org/forum/read.php?160,380114,380193#msg-380193 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,380193#msg-380193 Dr. Bogger Stepper Motors, Servo Motors, DC Motors Tue, 08 Jul 2014 18:20:20 -0400 https://reprap.org/forum/read.php?160,380114,380186#msg-380186 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,380186#msg-380186 NoobMan Stepper Motors, Servo Motors, DC Motors Tue, 08 Jul 2014 18:05:16 -0400 https://reprap.org/forum/read.php?160,380114,380131#msg-380131 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,380131#msg-380131 Dr. Bogger Stepper Motors, Servo Motors, DC Motors Tue, 08 Jul 2014 15:56:26 -0400 https://reprap.org/forum/read.php?160,380114,380129#msg-380129 Re: Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,380129#msg-380129 hydraraptor.blogspot.co.uk]]]> nophead Stepper Motors, Servo Motors, DC Motors Tue, 08 Jul 2014 15:48:30 -0400 https://reprap.org/forum/read.php?160,380114,380114#msg-380114 Micro Stepping Issue https://reprap.org/forum/read.php?160,380114,380114#msg-380114
Stepper Motor Details:
MFG: SHINANO
P/N: STH-39G120
NEMA: 16
COIL: 1.2 ohm
TYPE: 2 Phase Uni-Polar 6 lead
3.6 Degree step angle. 5mm dia. X 9mm serrated steel shaft. 4 M3X 0.5 metric mounting holes. 4" leads.
SQ.: 1-1/2” L: 1-1/4” WT: .36

That's all the info I have regarding these stepper motors... sadly..

These are the Driver Boards I got:
http://www.amazon.com/dp/B00E7O5O8I/

They are set to 1/16 Micro Stepping Mode, however, I get the same issue in 1/4 and 1/8 mode.


Here's the video showing the problem:
http://youtu.be/oFSmAZPV9Ds]]> Dr. Bogger Stepper Motors, Servo Motors, DC Motors Tue, 08 Jul 2014 15:25:03 -0400