Author here. I have a big backlog of posts, but I did this one first because I was trying to cram an explanation of BLE beacons into the project post.

> Is there something like war-driving for BLE Beacons?

Yup, that essentially what Neostumbler is! If you have an Android device go check it out.

My hope for the project is to make a little embedded device I can use, so I don't have to drain my phones battery. Also because it's fun to learn about a new topic.

Yes! the WiGLE project does Bluetooth geo-logging as well as WiFi.