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Arduino-based Electronic Lock

by ridercz, published

Arduino-based Electronic Lock by ridercz May 28, 2017
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812Views 258Downloads Found in Electronics

Summary

This is servo-based door lock controlled by Arduino Nano and powered by standard SG90 servo. The means to open the lock can be anything, from simple keypad trough magnetic hall sensors to Bluetooth or RFID.

This project contains complete material from Arduino Workshop SIG I did at ZodiaCon 2017.

In addition to STLs, there are the following files available:

  • Slides.pdf - presentation slides from my talk
  • Handbook-CS.pdf - lab handbook in Czech language
  • Handbook-EN.pdf - lab handbook in English language
  • Code.zip - source code for all labs

The following labs are included:

  1. Testing the environment (blinking the LED)
  2. Using the OH3144 Hall Sensor
  3. Using the 4x4 matrix keyboard
  4. Using the SG90 servo
  5. Simple lock controlled by magnetic sensor
  6. Simple lock controlled by keyboard
  7. Finished project - lock with changeable code stored in EEPROM.

The following electronic components are required:

  • Arduino Nano (or basically any Arduino, but the holder is designed for Nano)
  • OH3144 Hall Sensor
  • SG90 servo
  • 4x4 matrix keyboard

Print Settings

Printer Brand:

Prusa

Printer:

Prusa Mk2

Rafts:

No

Supports:

No

Resolution:

0.2 mm


Notes:

Some parts have 'light' variants (*_LT.stl). These are less robust, but print faster.

How I Designed This

The rack and gear were inspired by Motorized Door Lock, but the other parts were created from scratch and designed for easy print.

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