Autonomous and automatic parachute release system for Drone

Stand-alone parachute with automatic trigger for Drone
For drone less than 1.5kg (parachute D: 1.2m) S500 for example
Equipped with a mercury switch between the battery and the tester, the parachute deploys automatically as soon as the drone turns, which is very common during a fall. The device has a battery for its autonomy.
-Battery 7.4v 220mA (7 €)
-Test servo motor (2.2 €)
-Mini UBEC towards 5V (5 €). If necessary
-Servo engine SG90 (2 €)
- Mercury Switch (0.5 €)
- Transparent tube L