Description: These small steppers are a great way to get things moving, especially when positioning and repeatability is a concern.
When using a current limiting driver such as the Easydriver or Big Easydriver, a 12 volt power supply can be used as long as you adjust the current level to 400mA or less. If using a non current limited driver (like a L293D or an H-bridge) you will need to lower your input voltage to keep the motor current below 400mA.
This is a Bipolar motor.
Based on 5 ratings:
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I posted a similar review on the dual motor control (Dual TB6612FNG with Headers) page.
Someone should mention (Me maybe?) that this is also a great stepper for 3 volt systems.While this motor description might lead you believe that it is a 12 volt motor, its 4 ohm coils can be driven to full current (thus full torque) by as little as 1.6 volts. What you give up at low voltage is high speed. Its 3.5 Henry inductance results in a time constant of around 800 msec. If you don’t need full torque, the motor will work at less than 400 ma. which can reduce the current buildup time. I have one on my desk right now nicely driving a clock hand at less than 100 ma. peak. For applications like driving clocks or solar trackers which require slow single stepping, this is a small, relatively inexpensive, and high torque alternative to the Lavet drives found in clock motors (and is also reversible).
In particular this motor is very well matched to the Sparkfun motor driver, Dual TB6612FNG , That’s where the low Vcc of the dual motor control makes it perfect. Its PWM feature helps provide energy efficient current limiting if you are running on a 3 V battery.
Performs just as expected, even though I use a 9 volt supply. Plug and play with an Arduino Adafruit V1.2 motor shield.
I purchased a pair of these for possible use to power the 2 wheels of a small robot. The small shaft without flats would make it more difficult to connect to robot wheels than the shafts with flats as on small DC robot motors or the unipolar 28BYJ-48. The robots I’m making require very precise and reproducible movements, so stepper motors are required. There are now unipolar motor drivers circuits that require only 3 output pins to control both motors (rather than 8 pins with 2 H-bridges) so 28BYJ-48’s work fine, have shafts with flats and are very cheap.
Nice little motor. Easy to hook up and control using an Easy Driver board and a dev board.
For lightweight applications without a lot of torque required these are great - especially at the price. Definitely recommend!
Looks like the maximum stepper motor speed is about 997-999 RPM if you use it with an Arduino microcontroller and the EasyDriver. Check here for the example code that was used to test the stepper motor.
The number of steps for a full revolution looks to be about 384 microsteps since the stepper motor with cable has a step angle of 7.5 degrees (…360/7.5 = 48 step stepper ) and the EasyDriver has a range of 8 microsteps for a full step.