Whilst no extra hardware at all is attractive, at £0.51 (60 cents?) per chip (£0.25 per motor) the ULN2803 will drive steppers at up to 50V / 500mA in Unipolar mode at very little cost.

14. When faced with an unknown stepper motor of small to intermediate size, a very reliable gamble to play is as follows: if it has more than four wires, it's probably a four-pole unipolar motor, 0.9 ...

The Easy-Step 3000 line of advanced stepper motor drive and control systems are designed for unipolar stepper motors up to 35 V and 3 A per phase. The 3000's small size (63.6 26.4 mm) makes it a ...

Check out this inventive use of an MCU and stepper motor by one Alan Parekh. This great looking gear clock tells the time in a unique way. A PIC 16F628A microcontroller with an external 20MHz crystal ...

For applications where the microprocessor is overburdened or absent, the SLA7051M constant-current, two-phase unipolar stepper motor driver includes a built-in translator, allowing ...