#Arduino Garagedoor Unlocker
- Built using Arduino Pro Mini 5v
- You must initialize the Arduino's EEPROM with an initial passcode by uploading and running the
eeprom_init.inocode before uploading this file. - The servo connects to the door lock/unlock mechanism with a 4-bar linkage. A solenoid could be used as an alternative but would require an external power source as this cannot be provided by the Arduino.
- To activate the servo and unlock the door, enter the 4 digit code followed by # key.
- Servo rotates moving linkage and the lock/unlock mechanism, unlocking door.
- Door relocks after defined timeout.
- Pushbutton located inside door unlocks door immediately without requiring code entry.
- During unlock, enter new 4 digit code followed by * key to change passcode stored in EEPROM.
- The Arduino enters low power mode after timeout. Interrupts set on keypad and inside button wake device from low power.
- Grallator - EEPROM, keypad input handling - grallator.wordpress.com
- Nick Gammon - Low power and wake with keypad - www.gammon.com.au
- madcoffee - Low power info & disabling power LED - www.home-automation-community.com
