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A parachute release mechanism with an Arduino Pro Mini

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Step 3: The Electronics

the electronics are really simple so i haven't drawn a circuit diagram,the red battery lead is soldered into the RAW pin through the switch,the black lead to the ground pin. the white wire of the servo goes to a digital pin ( i used pin 9), the red lead goes to the vcc pin and the back lead to ground, i soldered all three wires to a male header that connects to the servo. the tilt sensor is soldered into pin 2 on the arduino and the ground pin right next to it, be careful when soldering not to hold the soldering iron on too long as you can damage the board
 
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