so on Saturday eve, my brother in law asked me if I can build him a quick release mechanism for his phantom 4. Challenge excepted - and I added another role on top - no buying - just reusing. Here is our Lego/bambo/scrap parts in action.
we still need to give it a test with a proper fishing line.
The code for the attiny is very simple, I check the LDR, and if its below a threshold, I open the hinge by rotating the servo.
here is the video https://www.youtube.com/watch?v=4Z483Df1qCw
Please share it.