The goal of this build was to find a good middle ground between a 3" Squirt and Naked Cinewhoop. I found the Squirt to be too big and too loud for close proximity to people flying. I also wanted to avoid the complexity of cutting down props to fit into ducts. I like how light and small the 2"ish Naked Cinewhoops are but I don't want to rip my Hero8 apart to cut weight. I used the Hero8 on my 5" freestyle rigs and it's also under warranty. Finally, I wanted to get about 3mins of flight time. With a 4s 450mah I get about 3.5mins of flight time and it weights in at about 265 grams. GoPro is powered off the balance leads using the TBS USB-C adaptor and 5v step down which saves about 25 grams.
Photos
"With a 4s 450mah I get about 3.5mins of flight time and it weights in at about 265 grams."
I find it hard to believe that this build flies for 3.5min with a 4s 450mah lipo. The reason I am saying this is because I have a 2.5" build which weights 162g including a 4s 450mah lipo and it flies for 3.5min-4min. Do you mind posting a DVR recording?
The video "Little People" is 3:20 single take and I didn't land until the first low voltage warning so I could have easily gotten more than another 10 seconds. I don't have any dvr footage laying around. When I get to it I share it with you but I can assure you I get 3.5mins no problem on a 450mah 4s.