Now that the technology is well along, I'm seriously pursuing the idea of using a drone to check domes. The big problems are weight and durability but right now I'm focusing on creating an ultra-lightweight light. If anyone knows of an existing manufactured light that throws out 100 or so lumens (at least) and is very lightweight or could be dismantled for parts, do tell. Otherwise, I'm thinking of creating my own. A bare LED clipped to an AAA seems light enough. Anyone know a good place to get parts or have experience with such things?
Since this forum is lightly used anymore, do feel free to pass along my query to any other virtual place where cavers gather, and point them my way.
Thanks!