Your drill is the drill that will pierce the heavens!

Unfortunately, nowadays I can't fly big quads somewhere outside. Therefore, consider this tiny pal as a dedication to my dream to build a big drone one day.
As a result, this build has been totally based on the idea to build a "true mature quad" like a 5" one but in as small a size as possible. Hence, I've used here the flying stack instead of the AIO module. That makes the drone a bit heavier, but in return, I've received some additional experience in choosing FPV drone parts, drone assembling, and its configuration.
But most importantly, it gave me the drone I like! It's awesome, especially as the first drone built by myself.

The most challenging of building this was putting everything inside such a tiny frame. As you can see there is no space left inside, and literally every square cm of inner space is utilized for something: the stack takes all frames' height from the bottom to the top, the ELRS receiver takes some place under the camera, and the capacitor is forced to peeking outside because of its size.
It's funny that 20mm screws were proven to be too short to be used in a stack with VTX, but 25mm were too long to fit inside the frame. So, I needed to cut the extra 3mm of it, to make it fit.

Dry weight: 93g
Full weight (with 3S 380mAh battery): 124g
Flight time: 3-5min

Here you can watch a short video of test flight: YouTube