Basic Stamp Stepper Motor Controller

This project started as a dual stepper motor controller, controlled by 2 inputs. It evolved into a controller for 3 steppers using a single input (variable pulse width) and included a power supply for a larger stepper motor.

This is  the dual stepper motor controller out of its box.  It uses a basic stamp chip (BS2) as the primary controller.  The controller turns stepper motors left or right based on pulse width of an input signal.  See the basic stamp code here.  There are some open outputs available on this version, so a later version was built as a triple stepper motor controller. 
 

Here's the dual stepper controller in its box. 

Simple VSM (Vibrating Sample Magnetometer)

With the exception of having to spend $2.47 for a carbon arrow, this VSM was built utilizing surplus / spare equipment.  

Close up of the Pickup coils and sample holder between the magnet faces.