SOLVED Stepper motor too slow I have Prusa mendel built some time ago. Arduino + ramps 1.4 + a4988, wades extruder, marlin Currently my extruder is working ok, but it is set to full step, loud and not precise When I'm setting to 1/16 on ramps, stepper is turning werrry slow. Question: If I will adjust pots on driver, will motor spin faster? I understand that I will need to adjust steps per mm. But this will be after getting stepper to spin in correct speed Motor info: NEMA 17 Stepper Motor Model 17HS19-1684S - Specifications Frame size 42 x 42mm - NEMA 17 1.8 degree step angle Length 47mm Holding torque 44 N.cm (4.4kg.cm, 62oz.in) Voltage 2.8V Current/Phase 1.68A Resistance/Phase 1.65ohm Inductance/Phase 2.8mH Inertia 68g.cm Bipolar, 4-wire Weight 0.35kg Step Angle Accuracy ±5%（full step,no load) Resistance Accuracy ±10% Inductance Accuracy ±20% Temperature Rise 80℃Max.(rated current,2 phase on) Ambient Temperature -10℃-+50℃ Insulation Resistance 100MΩMin. 500VDC Dielectric Strength 500VAC for one minute Shaft Radial Play 0.02Max.(450 g-load) Did some troubleshooting: connected extruder motor to x axis driver witch is 1/16 micro stepping.motor spins ok with my lcd controller i found Vmax X and Y are 500 but Vmax E is 25. Is it ok or this needs to be changed?? https://reprap.org/forum/read.php?160,316937,316937#msg-316937 Tue, 16 Jun 2026 07:46:07 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?160,316937,594915#msg-594915 Re: SOLVED Stepper motor too slow https://reprap.org/forum/read.php?160,316937,594915#msg-594915
any help appreciated !! thanks]]> yogesh.dp Stepper Motors, Servo Motors, DC Motors Thu, 10 Dec 2015 04:14:39 -0500 https://reprap.org/forum/read.php?160,316937,323848#msg-323848 Re: SOLVED Stepper motor too slow https://reprap.org/forum/read.php?160,316937,323848#msg-323848 stephenrc Stepper Motors, Servo Motors, DC Motors Wed, 12 Mar 2014 15:45:58 -0400 https://reprap.org/forum/read.php?160,316937,316937#msg-316937 SOLVED Stepper motor too slow https://reprap.org/forum/read.php?160,316937,316937#msg-316937 Arduino + ramps 1.4 + a4988, wades extruder, marlin
Currently my extruder is working ok, but it is set to full step, loud and not precise
When I'm setting to 1/16 on ramps, stepper is turning werrry slow.
Question: If I will adjust pots on driver, will motor spin faster?
I understand that I will need to adjust steps per mm.
But this will be after getting stepper to spin in correct speed

Motor info:

NEMA 17 Stepper Motor Model 17HS19-1684S - Specifications
Frame size 42 x 42mm - NEMA 17
1.8 degree step angle
Length 47mm
Holding torque 44 N.cm (4.4kg.cm, 62oz.in)
Voltage 2.8V
Current/Phase 1.68A
Resistance/Phase 1.65ohm
Inductance/Phase 2.8mH
Inertia 68g.cm
Bipolar, 4-wire
Weight 0.35kg
Step Angle Accuracy ±5%（full step,no load)
Resistance Accuracy ±10%
Inductance Accuracy ±20%
Temperature Rise 80℃Max.(rated current,2 phase on)
Ambient Temperature -10℃-+50℃
Insulation Resistance 100MΩMin. 500VDC
Dielectric Strength 500VAC for one minute
Shaft Radial Play 0.02Max.(450 g-load)


Did some troubleshooting: connected extruder motor to x axis driver witch is 1/16 micro stepping.motor spins ok
with my lcd controller i found Vmax X and Y are 500 but Vmax E is 25.
Is it ok or this needs to be changed??]]> didzix Stepper Motors, Servo Motors, DC Motors Thu, 27 Feb 2014 09:42:27 -0500