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.
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.
This skill concerns mechanical and robotics knowledge. You may need to know how mechanical parts interact, how motors work, or how to use motor drivers and controllers.
Skill Level: Experienced - Your experiences should include working with stepper motors and feedback system. You may need to understand how encoders and more complex control systems work.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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Based on 8 ratings:
3 of 3 found this helpful:
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.
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!
I needed a small inexpensive stepper motor to control. I had been trying to use some 28BYJ-48 but they were too slow etc. I went searching for steppers and was tempted by some of the NEMA 17s but then stumbled on these at SparkFun. Right price and a nice compact size. Slapped a Pololu stepper driver on with 12v supply and the arduino/ATTINY 85 was happy pulsing away. The setup has been running continuously for 8 days now. It is a little warm but nothing alarming and is chugging away no problems. The next challenge is how to mount stuff to shaft which is 3mm and smooth.
I use this stepper motor in the production of my skeleton acrylic clocks. Using it for 3 years now. It’s up 24/7 and it’s reliable.
Performs just as expected, even though I use a 9 volt supply. Plug and play with an Arduino Adafruit V1.2 motor shield.
I was hoping this would work for my project, and it is a nice, tiny stepper that works fine. However, some design issues on my side require more torque to overcome, so I had to go to a larger NEMA17 stepper. This should come in handy for a small form-factor project that doesn't need as much 'leverage'. Regarding the round shaft: 5 minutes and a file will give you a flat on the shaft ;>)