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![Keypad Circuit Schematic For Microcontroller](https://i2.wp.com/lh5.googleusercontent.com/-SxkgmrNpMHw/TiAmzvne0UI/AAAAAAAAAF4/Ef_xzyQGOTA/s640/keypad-schematic.png)
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![Electronic Code locking system using PIC 16F877 Mircocontroller](https://i2.wp.com/www.gadgetronicx.com/wp-content/uploads/2014/09/digital-locker-pic-microcontroller.png)
Electronic Code locking system using PIC 16F877 Mircocontroller
![Keypad Lock Circuit using a Single IC](https://i2.wp.com/makingcircuits.com/wp-content/uploads/2017/09/025.jpg)
Keypad Lock Circuit using a Single IC
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Technical hut projects: Keypad Based Door Lock System Arduino Project
![Keypad Combination Lock Circuit - YouTube](https://i.ytimg.com/vi/6WOyOQwKE0c/maxresdefault.jpg)
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![ESP32 - RFID/NFC Door Lock System | ESP32 Tutorial](https://i2.wp.com/esp32io.com/images/tutorial/esp32-rfid-door-lock-wiring-diagram.jpg)
ESP32 - RFID/NFC Door Lock System | ESP32 Tutorial