By using the EasyDriver units to generate the bi-polar stepper motor signals larger motors up to 2A per phase can be using a L298N driver or multiples for larger currents.

Below is a simple compact board as a solution I've come up with to allow me to use the 1.5A stepper motors in this project. The circuit is based on the example provided in the datasheet but using SMT components to minimise the overall size. This takes the common 24v supply that will power the whole system.