Raschemmel -
I don't have one either.
This project is well documented but no schematic (pe-se) was needed. It is a kind of "Lego-block" project where the various pins of the Arduino, the BED, the two I2C devices (7-seg display and LED driver) are just hooked together. I have a lot of individual drawings made in a CAD program of the various pin-charts, but don't see how they would help - but would be glad to put them if you'd like.
Reading the BED PDF manual, all pins are connected correctly, and the motor did step in the bread-board setup. All project wiring has been confirmed via metering... and the signals appear where they should. I have a clean DIR, STEP and MSI, MSI2 and MSI3 are all LOW - the default state. ENABLE is not connected as per the docs, so the only signals involved are those listed.
Maybe I hosed the software some how and THAT isn't working...
=A.