EQTrack Basic allows to control two stepper motors, one on the equatorial axis, the other on the declination axis. It is composed of a controller, attached to the mount, and a keypad.
This project started back in 1991 as a bare one axis stepper motor controller for my Vixen Super Polaris mount. It evolved till today, with the addition of new functions and a change of CPU. I've used it around the world (all continents except Antartica ;o) ; for example, during the 2012 Venus transit in Tennant Creek, Australia.

Wiki: Basic-Features
Wiki: Basic-Tutorial
Wiki: Basic-UserManual