This is an airplane taking off model. The front is supported by two legs, which are connected by a screw. The rear leg is connected to a servo motor, which is controlled by an Arduino. The motion of the rear leg causes the model to tilt backward, modeling the airplane to take off. Every time it falls, it needs to be reset by hand.

All parts are cut by a laser cutter and 6mm plywood. The wing is connected to the body by press-fit. The front legs are connected to the body by a screw. The servo motor is connected to the body by screws, and the rear leg is connected to the motor by screws.

See here for the used CAD files.

 

</pre>
#include <Servo.h>

Servo take_off;

int off=0;

void setup() {
// put your setup code here, to run once:
take_off.attach(9);
}

void loop() {
// put your main code here, to run repeatedly:
delay(2000);
if(off==0)
{
take_off.write(170);
off=1;
}
delay(1000);
}
<pre>