Hi

I have found a an electronic curcuit for measuring tilt. It's from elektor.de 99'. Just what I was looking for, using ADXL 105 from Maxim.

Regarding static diving, I have two days ago been ordering a 750ml tank from Engel. Quiet expensive one, but I couldn't find any on ebay for a low price. I also have a "bajonettversluss" (metal ring) for closing the two parts of the U-47.
Today I went to the shop to buy all raw materials for doing a complete conversion of the inside. I will post pictures later when I start to rebuild the sub.
As you mention it's a very timeconsuming job, but I want to do it, because I'm not satisfied with dynamic diving.
I use 12 Nimh 3300 mAh (7,2V 6600 mAh) cells and it should be possible to find place to the 750 ml tank and the batteries inside the tube.

Later I will optimize the gyro software, but I think it's first a project for 2007.

Tom