The feather board stack is a little bit heavy (22.3 g) so I tried the soldering way to assemble different motor board and esp32 feather board, which is only 14.55 g as shown in the following figure:
The soldering stack mode is also lighter, which is 22.67g now as shown in the following figure, and the default one is 30.5g.
I assemble the new control board to the newly designed gondola, the overview is shown below:
The flying test video will be coming tomorrow.