Keyless Door Convert
thingiverse
Why I Made This Project? I created this project because I often forget my keys back home, but the main reason I made it was for fun. Part List --------- -Servo 996R -Arduino Nano -Press Button -Adafruit Electret Microphone Amplifier with Adjustable Gain How It Works? The input of this device is a pattern of knocks from outside or holding the button from inside. If the pattern matches the key, or the button is being held, the device will open the lock for 5 seconds. F3D (Fusion 360) I provide the drawing file so you can change the dimensions to fit your lock and the motor you use. Wiring Diagram ------------- Servo (Signal) -> Digital 4 Servo (Power) -> 5 Volt Button -> Digital 3 Button (Power) -> 5 Volt ***Please follow the instructions from your seller for button wiring. A resistor may be required. Electret Microphone (Signal) -> Analog 0 Electret Microphone (Power) -> 3.3 Volt External (Positive) -> Vin All Ground -> Ground
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