The Ultrasonics v1.0 board comes with a fast processor ( 32-bit Atmega SAM3X8E clocked at 84Mhz).

It also has 7 sockets for separate Pololu DRV8825 Driver Carriers.

But this processor may not be fast enough for smooth stepper-motor control.

So I have an idea to modify the electronics part so that the "step" signal could be controlled by a hardware pulse generator that counts down the number of steps. This would free the main processor to prepare the next stage.

We will need some mechanism to abort the planned steps in an emergency.

I believe that a fluid moving robot is what what makes the difference between a toy and a robot that has character.

Just some wild brainstorm.