Lego Control Lab 9751 and a Macintosh LC 475

Today I finally got around to getting my Lego 9751 interface running on my LC 475. It wasn't being recognised, but I figured it is wired like a host serial device, so you need a Null modem style cable (but with a male connector on that end of the cable strangely).
I made an adapter and had a play. I ended up making a couple of DIY passive (yellow) resistive sensors because I don't own many.
The computer is a Macintosh LC 475 and was running System 7.1.

[@phipli]

*virtual - in my defence it was about half one in the morning.