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Dependencies: 4DGL-uLCD-SE Servo HC_SR04_Ultrasonic_Library mbed-rtos mbed
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Smart Door Lock¶
Overview¶
A smart door lock system was designed with the purpose of adding some sort of security to any door. A servo was connected to a door lock which locks and unlocks it. The door can be locked and unlocked using a an app on a phone, pushbuttons and timers which lock the door after a certain time. Sonar was used to determine if the door is closed or open. A speaker and an amplifier are included which are used as an alarm that goes off when the door is opened without being authorized.
Wiring¶
| MBED | Bluetooth | Amplifier | Servo | Speaker | Sonar | |||
|---|---|---|---|---|---|---|---|---|
| Vout | in a | table | ||||||
| Ground | in a | table | ||||||
| Vu | in a | table | ||||||
| P6 | in a | table | ||||||
| P7 | in a | table | ||||||
| P8 | in a | table | ||||||
| P9 | in a | table | ||||||
| P10 | in a | table | ||||||
| P13 | in a | table | ||||||
| P14 | in a | table | ||||||
| P15 | in a | table | ||||||
| P20 | in a | table | ||||||
| P21 | in a | table |