This is a great first stepper motor, good for small projects and experimenting with steppers. This uni-polar motor has a built in mounting plate with two mounting holes. There are only 32 step (11.25 degree) per revolution, and inside is a 1/16 reduction gear set. (Actually its 1/16.032 but for most purposes 1/16 is a good enough approximation) What this means is that there are really 32*16.032 steps per revolution = 513 steps! The shaft is flattened so its easy to attach stuff to it with a set-screw. A perfect first stepper motor and works well with the Motor Shield for Arduino.
Do not?use interleaved or micro-stepping to control this motor or it will take forever to turn. Instead use single or double stepping. The torque is fairly high but its slower than un-geared steppers – we maxed out at about 50 RPM by over-driving it a bit with 9VDC. At 5V try to stick to under 25 RPM.
You must?use this motor with motor driver board/ IC to get it working, ULN2803 IC works great with this motor. Check out the ULN2803 Motor Driver board in out Store.
Datasheet
SPECIFICATIONS:
| Series | 28BYJ-48 |
|---|---|
| Type | Permanent Magnet Gear Motor |
| Coil Type | Unipolar |
| Voltage – Rated | 5VDC |
| Current Rating | – |
| Steps per Revolution | 4096 |
| Step Angle | 0.088? |
| Accuracy | – |
| Torque – Holding (oz-in / mNm) | 16.66 / 117.68 |
| Size / Dimension | Round – 1.100″ Dia (28.00mm) |
| Diameter – Shaft | 0.197″ (5.00mm) |
| Length – Shaft and Bearing | 0.394″ (10.00mm) |
| Mounting Hole Spacing | 1.378″ (35.00mm) |
| Termination Style | Wire Leads with Connector |
| Operating Temperature | – |
| Coil Resistance | 50 Ohms |
| Features | Flatted Shaft |
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