The center table in the workshop has the quest for this engineering project. It requires 500 gold and a Svirfneblin Power Sphere. I thought I had everything I needed based one the quest description and it took my gold but it didn't recognize the Svirfneblin Power Sphere in my inventory as the required item. Maybe there's a different power sphere I need?
(http://image.prntscr.com/image/3d2c1eeb7c5b4f3c8cc93eacf6dc1046.png)
There is a different one, yes.