5V Stepper Motor + ULN2003 Drive Module Board - (AD39167)

Description:

This is a stepper motor, good for small projects and experimenting with stepper motors. This unipolar motor has an integrated mounting plate with two mounting holes. It has 32 steps (11.25 degrees) per revolution, and inside there is a 1/16 gear reduction set. (It is actually 1/16.032, but for most purposes, 1/16 is a good enough approximation.) What this means is that there are actually 32*16.032 steps per revolution = 513 steps. The shaft is flattened, making it easy to secure with a set screw. A perfect first stepper motor and works well with the Motor Shield for Arduino.

The gearing has some side effects that are important to keep in mind. First, you can turn the stepper by hand but not as smoothly as an un-geared stepper. It also means that you should not use interlaced or micro-steps to control it, or it will take forever to turn. Instead, use a single step or double step. The torque is quite high, but it is slower than un-geared stepper motors; we maxed out at about 50 RPM by slightly over-powering it with 9 VDC. At 5V, try to stay below 25 RPM.

Note: This kit includes a ULN2003 stepper motor driver board, which has a ULN2003 DARLINGTON array to control 4-phase - 5-wire stepper motors (5v-12v). It is easy to use with Arduino or other development platforms for the stepper motor.