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HOME / PRODUCT CATEGORIES / STEPPER / STEPPER MOTOR WITH CABLE
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Stepper Motor with Cable
ROB-09238
12
Description: This is a simple, but very powerful stepper
motor with a 4-wire cable attached.
This is a Bipolar Motor.
Features:
Step Angle (degrees) :1.8
2 Phase
Rated Voltage : 12V
Rated Current : 0.33A
Holding Torque : 2.3kg*cm
5mm Diameter Drive Shaft
Winding resistance: 32.6 Ω
Winding inductance: 48 mH
Max flux linkage: 1.8 Vs
Maximum Detent Torque: 0.016 N.M
Total inertia (kg.m.m): 3.5 Kg.m.m
Total friction (kg.m/s): 4 Kg.m/s
NEMA 17 Mounting Hole Pattern (31mm)
Motor Width: 42mm (1.67”)
Documents:
Datasheet
SparkFun 10-21-11 Product Showcase
PAGE 1 OF 6
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Customer Reviews
COMMENTS 175 REVIEWS 12 TUTORIALS 1
4.3 out of 5
Based on 12 ratings:
4 of 4 found this helpful:
Excellent
about a year ago by RobotCamera verified purchaser
I own three of these motors, and use them for video production, microphotography
(controlling the positioning of equipment), and robotics projects. They seem reliable, have
enough torque for all of my needs (so far), and can be nicely driven either by H-bridge
chips like the L293D, or by more feature-rich motor drivers like the EasyDriver.
But as I just discovered, working with SLF radio frequency, which is what you are generating
when switching these motors (and all steppers) at typical speeds, is not always carefree.
The RFI/EMI produced can interfere with sensitive input pins on microcontrollers, and in my
case, an IR receiver module (Vishay TSOP38238). The solution is pretty easy, though - if a
part is being influenced by EMI, shield it by surrounding it with grounded conductive
material. You can buy shielding, or make your own. I am shielding my IR receiver module by
placing it on a piece of PCB with a large ground plane that sits between the IR receiver and
the stepper controller, output traces, wiring, and motor.
Another thing I like about this motor, which is perhaps a little odd, is the very long cable. I
usually only need half the length. I cut it in half and braid it. But the other half I cut off? It
makes excellent stranded hook-up wire! So hey, bonus hook-up wire :)
For hooking this motor up to projects in a reversible but still dependable manner, I
recommend 4-pin mini XLR plugs and jacks. They can be pricey but are worth it because
accidentally disconnecting a running motor while attached to a controller can destroy the
controller. I have also used S-video (4-pin mini DIN) connectors in the past, but after trying
mini XLR, I found it to be a far superior solution.
Last thing to note - you can dissemble these motors to see how they work, and put them
back together easily. Once opened up, you just have to tug on the rotor a bit because there
are fairly strong magnets in there. You can also reverse the axle so it comes out the other
side - I had to do that for one project to get the motor mount where I wanted it.
1 of 1 found this helpful:
Nice!
about 2 years ago by Member #513903 verified purchaser
Very nice product, works as described, would be even greater if it had a universal mounting
hub included…
3 of 4 found this helpful:
Stepper Motor
about 2 years ago by Member #636145 verified purchaser
This makes a great low RPM generator for windmill , waterwheel science fair projects .. puts
out 6 Volts AC at about 70 RPM which will power 5 V. LED’s.
0 of 2 found this helpful:
Pretty good for power generation!
about a year ago by Member #432286 verified purchaser
Bought this motor for a wind turbine (my university’s senior project). Ran it with a 3D printed
5 star 6
4 star 4
3 star 1
2 star 1
1 star 0
3-bladed turbine, with a NACA 2410 airfoil, 5.25" span and 1" chord with a 0.45" hub (so the
inner radius of the blade is 0.45" and the outer radius is 5.7").
Test setup used a 9.65k ohm resistor connected to two rectifier bridges (one for each
output) with 0.32V forward loss schottky diodes and 1000uF electrolytic capacitors from
DigiKey.
At 6 m/s freestream velocity, turbine spun at ~460 rpm and motor produced 31V. At 9.2 m/s,
~985rpm and 61V. At 11.9 m/s, ~1420 rpm and 70.6V.
P=V /R, so power at the three speeds was 0.010A, 0.385A, and 0.517A.
We also used the cheap circular stepper motor from sparkfun and it only produced 0.030A
at 12 m/s and 1450 rpm.
EDIT: In an earlier review, I incorrectly assumed that the “friction” seen with this motor was
due to the magnet rubbing against the outer walls. Actually, this “friction” was the detent
torque - seen when the wires were shorted together. When used as a generator, the load
(resistance) across the wires will determine the amount of detent when you try to spin the
turbine.
A previous review wanted a universal mounting hub - we used SparkFun’s 5mm to ¼" shaft
coupler to mount our blades, which could also be used with a 3mm to ¼" shaft coupler for
other motors.
No Motor Mounts?
about 9 months ago by Member #772669 verified purchaser
I’m the sure the motor works great but it’s a NEMA 16 motor mount…..they don’t sell NEMA
16 motor mounts and i’m having a very difficult time find one (anywhere).
Single T replied on February 25, 2016:
I wish we had a motor mount too. When I need to mount these, I have used a plate
that I drill to match the mounting holes. Not an off the shelf solution I know. But it
might help someone. Thanks
Simple and Effective
about 11 months ago by rickcjmac verified purchaser
It is a surprisingly strong and simple motor. I used the TB6612FNG with a 12 V wall wart and
it started right up!
0 of 3 found this helpful:
problem with bearings
about a year ago by Member #688742 verified purchaser
i buy four parts, while 2 of them have problem with spring force and this stall the rotor when
try to rotate it by hand
i fix it no big deal
Perfect for the job.
last year by Member #507443 verified purchaser
Used to drive a power focuser on a telescope. Plenty of torque and robust. Trial and error
methods mean errors - no problem for this motor.
Seems to work just fine
about a year ago by Member #447117 verified purchaser
Didn’t have much trouble at all getting this thing up and running with an Arduino Uno and a
TI SN754410 H-Bridge.
2
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