Building FAD V1
Main Structure
All parts of the frame were cut out of plywood using a laser cutter.
The parts were then glued together with wood glue.
Flight Control And Navigation
With gps receivers and compass modules, there is a risk of the signal being distorted by electromagnetic interference. That's why it makes sense to install the gps module slightly away from the other devices. For this reason, i have mounted the small tower on the main frame on which the gps is mounted.
There is only one important rule for mounting the flight controller: As close to the center of gravity as possible!
Power And Propulsion
For this drone i use 4 Emax 2216 motors with 10x4.5 inch propellers. Since the motors only require a small amount of power, a cheap 20 A ESC is completely sufficient.
It is always an advantage to use a PDB: a PDB (Power Distributiuon Board) is used to supply several devices with power from one voltage source. Another advantage is that most PDBs offer outputs with different voltages: This means that I can use one Matek PDB to supply 2 ESCs with 11.1 V and simultaneously provide 5 V for the servo and 12 V for the FPV system.
Payload Release
The release mechanism for the payload could not be simpler: A servo is mounted on the underside of the drone, which opens and closes a small hook carved out of wood.
The payload also has a small hook with which it is attached to the drone. The payload is released by opening the hook on the servo. By the way, the red fabric is the parachute for the first aid box.
Video
Comming soon ...