Those who know the smart controller (for drones from DJI), know that this is also not very light and the use of a shoulder strap is appropriate. Here I thought it would be better if I always have the display in view, even if I let go of the controller and it only hangs on the shoulder strap. So I have both hands free and still see the display. I have made two variants, a lighter and a more stable. Depending on the material (PLA, ABS...) the stiffness can be increased.