Quick and dirty (and cheap) motor control?

Hi! I need a quick and dirty (and extremely cheap!) way to make a Particle.io Photon make a stepper motor run for a specified time in one or the other direction and then stop. Nothing more complicated than that, only has to be a very small motor (to turn a set of vertical blinds from closed to open). Does anyone have any suggestions?

There’s a project for that already:

Check out the Adafruit DRV8833 DC/Stepper Motor Driver Breakout Board which is only 5 bucks. You can use it with the Stepper library available in Build.