user4474: 
I need to construct 4 reactors for an experiment requiring mixing. We want to automate the mixing and at the same time reduce cost. can we connect multiple stepper motors with 5 or 6 wires on one shield version 2?

user3638: Depending on the shield you can connect an external powersource through mosfets or transistors (Depending on the size of the steppermotor).
But if it is smaller motors with a 12v powersource, i really don't se why you would do that, since stepper motor controllers cost about $2-$4 each. Being cost effective i think that writing this question would cost more than actually just go and buy 6-8 controllers. (Don't buy the shield ones, they are overly expensive)

4474: <p><img src="https://i.stack.imgur.com/mzoWL.jpg" alt="enter image description here"></p>

<p>I need to construct 4 reactors for an experiment requiring mixing. We want to automate the mixing and at the same time reduce cost. can we connect multiple stepper motors with 5 or 6 wires on one shield version 2?</p>
 3638: <p>Depending on the shield you can connect an external powersource through mosfets or transistors (Depending on the size of the steppermotor).</p>

<p>But if it is smaller motors with a 12v powersource, i really don't se why you would do that, since stepper motor controllers cost about $2-$4 each. Being cost effective i think that writing this question would cost more than actually just go and buy 6-8 controllers. (Don't buy the shield ones, they are overly expensive)</p>
