نظام قفل باب أردوينو برمز PIN مكون من 4 أرقام

Okay, so let's jump on to the simulation part of this project. For the simulation, we will use Proteus Professional 7 software. Okay, so let's drop the components first from the components list. Search for Arduino. You will get Arduino Uno here. Okay. We will drop 20 cross 4 LCD screen here. Keypad module and motor for lock indication. Okay. So, let's make the connections. Here we will place LCD. Keypad module and motor and motor here. And we will also needed an LED for the indication of opening the lock. Here, okay. So, let's make the connections of keypad module. Okay. Here are the connections A0, A1, A2, and A3. And connect the columns to A4, A5, and 3. Okay. Column 1 to A4. Column 2 to A5. And column number 3 to pin number 3. Okay. And for LCD screen we have the connections here. RS pin to EN to 8. RS pin to 9. And ES pin to 8. And D4 to 7. 6 to D3. Sorry, D5. Okay, D5. 5 to D6 and 4 number pin to D7. Okay. We have to connect RW to ground. And VSS, VDD, and VEE to power. Means 5 Okay. Let's place it here. Okay. Okay, fine. And we have to connect the LED to pin number 10 of Arduino. Make sure of polarity. And pin number 11 to terminal 1 of motor. And pin number 12 to the second terminal of the motor. Let's add virtual terminal for debugging. Connect TX to RX and RX to TX, okay. These are our connections. Let's jump on to the code. This is the code. You can get it from the article by clicking the link. These are the libraries. This is of keypad. This is of LCD screen. This is EEPROM. This is pin These are the pin declarations. And these are the variable declaration. You will initialize the keypad. This is setup function. And this is the loop function. Okay. So, we will compile it and make the hex file of this program, which will which we will place in the Arduino folder of the simulation. This is compiled. Let's paste the file here. have it in documents, Arduino, Arduino door locking system. Here it is generated hex file. Open. Okay. And play the simulation. You can see the greetings here. Enter PIN code. Remember that the initial PIN code will be 1 2 3 4. See, PIN code accepted. PIN code accepted. Next time we will enter 5 5 5 5. Access denied because it is wrong. You can also change, but you can also change the PIN code by pressing this button. Hash button. Enter current PIN code. 3 4. This is my current PIN code. So, my new PIN code will be 3 6 9 8. Done. Now, will enter the previous PIN code. It will be wrong. Access denied because changed it to 3 6 9 8. PIN code accepted. Motor is rotating. Yes. So, this is the end of the simulation. Thank you for watching. Goodbye.