1. I cobbled together the working parts of two DELL 8600 lap tops and created one that works!! I installed the PBP tools and have a strong new battery. I will be able to modify my code in the building - sans electricity and heat - where I test.

2. I found that putting a cardboard right up to the front SONAR makes it behave as if there is nothing within range. Sooo up real close is far away as far as it is concerned.