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--- pm:prj2025:iivasciuc:131375 [2025/05/21 17:45]
mircea_ovidiu.dodi [Functionality]
+++ pm:prj2025:iivasciuc:131375 [2025/05/30 10:45] (current)
mircea_ovidiu.dodi [Arduino Pinout:]
@@ Line 1: / Line 1: @@
 ====== Smart Locker ======
-! Version: 11.05 - 1st assigment version. Work was started on the other milestones as well but it is yet unfinished !
+Release notes:
+Version: 11.05 - 1st assigment version. Work was started on the other milestones as well but it is yet unfinished
 Done: general details, hardware implementation and most of the software implementation.
-! Version 21.05 - 2nd milestone - full functionality achieved. !
+Version 21.05 - 2nd milestone - full functionality achieved.
 ===== Introduction =====
 Smart Locker is a solution for securing valuable items coming in the form of a lockable safe.
@@ Line 13: / Line 16: @@
 ===== Functionality =====
 Functionality TLDR:
-  * The locker can be opened by introducing the correct numerical combination or presenting the RFID card.
+  * The locker can be opened/locked by introducing the correct numerical combination or presenting the RFID card.
   * If 3 wrong PINs are introduced, the buzzer is triggered, thus entering alarm mode.
   * Alarm mode can only be stopped by presenting the Master RFID Card.
-  * * The PIN can be reset by presenting the Master RFID card (not the standard one!) and entering/confirming twice the new PIN
+  * The PIN can be reset by presenting the Master RFID card (not the standard one!) and entering/confirming twice the new PIN
   * For each PIN introduction, a status is displayed ("Correct!" / "X tries remaining")
   * A PIR sensor detect human presence close to the keypad.
@@ Line 24: / Line 27: @@
 ===== General Description=====
-To implement the project in a physical format, a servo motor is used which performs the opening/closing of the door. A toothed wheel was attached to this motor to create a mechanism together with a rack. In this way, the rotational motion from the motor is used to move the lock to the correct position. To actuate the servo motor, and thus open the door, a keypad is added, through which the user can enter the correct password, as well as an RFID card communication module, where, using the correct card, the door can be opened.
+To implement the project in a physical format, a servo motor is used which performs the opening/closing of the door. To actuate the servo motor, and thus open the door, a keypad is added, through which the user can enter the correct password, as well as an RFID card communication module, where, using the correct card, the door can be opened.
-The locking mechanism rests against a weight sensor - if the door is forced (i.e high weight reading), the buzzer is triggered.
+The locking mechanism rests against a weight sensor - if the door is forced (i.e high weight reading), the buzzer is triggered. This functionality was later abandoned, since the two load cells used were either too hard to trigger (50kg, 3 wires) or had no pins remaining to be wired to the Arduino board (10kg, 4 wires). Right now, the 50kg is present but not connected, it only is used as part of the locking mechanism.
-The alarm system is activated if the door is forced or 3 incorrect passwords have been entered consecutively or the wrong card has been used 3 times, or a combination of these two events, with the user having three attempts to open the door. Once the alarm system is activated, a buzzer will emit a loud audible signal, which can only be stopped by using the correct RFID card.
+The alarm system is activated if the door is forced or 3 incorrect passwords have been entered consecutively 3 times,  with the user having three attempts to open the door. Once the alarm system is activated, a buzzer will emit a loud audible signal, which can only be stopped by using the correct RFID card.
 ===== Hardware Design =====
@@ Line 57: / Line 60: @@
   * Active buzzer
   * PIR sensor HW-201
-  * Load Cell
+  * 10kg Load Cell
 </note>
@@ Line 89: / Line 92: @@
   * SCL: A5 (Fixed for I2C)
-Power Connections
+Power Connections:
 VCC (5V)
   * LCD Display
-  * RFID Module
   * Servo Motor
   * Load Cell
   * Keypad
+VCC (3.3V)
+  * RFID Module
 GND
@@ Line 107: / Line 113: @@
 ===== Software Design =====
-State Machine: The core logic is driven by the currentState variable, which can be one of the following:
+[[https://github.com/MirceaOvidiu/SmartLocker|Code available here]]
+Finite State Machine: The core logic is driven by the currentState variable, which can be one of the following:
   * STATE_IDLE: The default state, waiting for PIN input or RFID card.
@@ Line 142: / Line 150: @@
 <note tip>
-The intended functionality was achieved - a demo can be found on the following [[https://www.youtube.com/watch?v=Mho3pYF5UIk&ab_channel=MirceaOvidiu|YouTube]] link or embedded in the [[https://github.com/MirceaOvidiu/SmartLocker|GitHub]] page.
+The intended functionality was achieved (except the load cell feature) - a demo can be found on the following [[https://www.youtube.com/watch?v=Mho3pYF5UIk&ab_channel=MirceaOvidiu|YouTube]] link or embedded in the [[https://github.com/MirceaOvidiu/SmartLocker|GitHub]] page.
 </note>
@@ Line 178: / Line 186: @@
 {{:pm:prj2025:iivasciuc:smartlockerfinal.jpg?nolink&300|}}
-===== Bibliografie/Resurse =====
+===== Bibliography =====
 <note>
-Listă cu documente, datasheet-uri, resurse Internet folosite, eventual grupate pe **Resurse Software** şi **Resurse Hardware**.
+Resources used:
+[[https://www.instructables.com/Arduino-Wiring-and-Programming-of-RFID-Sensor/| RFID guide]]
+[[https://docs.arduino.cc/tutorials/generic/basic-servo-control/| Servo Motor guide]]
+[[https://arduinogetstarted.com/tutorials/arduino-keypad| Keypad configuring]]
+[[https://randomnerdtutorials.com/arduino-load-cell-hx711/| Load cell and HX711 module tutorial]]
+[[https://arduinogetstarted.com/tutorials/arduino-lcd-i2c| I2C display configuration]]
 </note>