1.Up to 4 bi-directional DC motors with individual 8-bit speed selection.
2.Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.
3.4 H-Bridges: per bridge provides 0.6A (1.2A peak current) with thermal protection, can run motors on 4.5V to 12V DC.
4.Pull down resistors keep motors disabled during power-up.
5.2 external terminal power interface, for seperate logic/motor supplies.
6.Tested compatible for Arduino Mega, Diecimila & Duemilanove.