motor questions from a beginner

Hi , I'm really a beginner with the arduino and if anyone has time to answer a few questions (or at least point me in the right direction) I would really appreciate it.

How many motors can one arduino run with the standard motor shield? It looks like two but I would like someone who knows what they're doing to confirm that.

I have four small dc motors (they draw about 1 amp at 4.8 volts) that I would like to control (both forward and reverse) from the arduino, with a single analogue input to the arduino.

Does this sound achievable?
Thanks,
Casey

I think you are right about the shiekd.

One awy to control 4 motors with both direction and speed, would be to use 4 H bridge IC's like L293 (others are just as good).

Just search the forum and play ground for H bridge, and you will find lots of info.

By the way i think that a newe motor shield is in development in Lady Ada's workshop, i saw a nice little video of it controlling what looked like two servo's, a stepper and a DC motor all at the same time, this might be iĀ“nteresting for you.

MikMo