As I mentioned in the post where I bought the motors - they do have some risk associated with them. Hold off on a buy until I at least touch them. I've still got some research to do on them.
The plug in boards should be trivial to build. Three TO-92 transistor packages, three 1/8W leaded resistors, two strips of 0.1" connectors (normal Arduino header parts). No surface mount no silly stuff. I'll post all the details (open source) once I suspect they actually work. All the electronics are stock items at Mouser. The shipping will cost you more than the parts for the 3 you would need plus a full set of spares....
The plug in boards should be trivial to build. Three TO-92 transistor packages, three 1/8W leaded resistors, two strips of 0.1" connectors (normal Arduino header parts). No surface mount no silly stuff. I'll post all the details (open source) once I suspect they actually work. All the electronics are stock items at Mouser. The shipping will cost you more than the parts for the 3 you would need plus a full set of spares....