Small Reduction Stepper Motor - 5VDC 32-Step 1/16 Gearing - (AD22561)

Description:

This is a great first stepper motor, great for small projects and experimenting with stepper motors. This unipolar motor has a built-in mounting plate with two holes. There are only 32 steps (11.25 degrees) per revolution, and inside is a 1/16 reduction gear. (It's actually 1/16.032, but for most purposes, 1/16 is a good approximation.) This means there are actually 32 x 16.032 steps per revolution = 513 steps! The shaft is flattened, so it's easy to attach with a set screw. A perfect beginner stepper motor and works well with the Arduino motor shield.

The gearing has a few important drawbacks to consider. First, you can turn the stepper motor by hand, but not as smoothly as a non-geared stepper motor. This also means you shouldn't use interleaving or microstepping to control it, as it will take a long time to turn. Instead, you should use the single or double step system. The torque is quite high, but it is slower than non-geared stepper motors. We topped out at about 50 RPM by slightly over-powering it with 9V DC. At 5V, try to keep it under 25 RPM.

To use with the Adafruit motor shield, connect red to ground (center), orange and pink to one motor port (e.g., M1), and blue and yellow to the other motor port (e.g., M2). In order: orange - pink - red - blue - yellow. Then, use the example code that comes with the Adafruit motor shield library and set the constructor to Adafruit_StepperMotor *myMotor = AFMS.getStepper(513,motornum) and the speed to 5 RPM by calling motor->setSpeed(5). You can also connect it with transistors and use the Arduino Stepper library.

Technical Details:

• Unipolar stepper motor with 5-pin 0.1" pitch cable connector
• 513 steps per revolution
• 1/16.032 gear reduction
• Recommended operation: 5V DC
• Weight: 37g
• Dimensions: 28mm diameter, 20mm tall (not including 9mm shaft) with 5mm diameter
• 23cm long cable
• Holding torque: 150g-force*cm, 15 N*mm/ 2 oz-force*in
• Shaft: 5mm diameter flattened
• Approximate DC impedance of 42 ohms per winding

Reference Link