CryptoLocker 🔐

This is a project of a digital locker based on ATM like otp based authentication mechanism.

👀 How it Works

On Pressing Star (*) in the keypad, the Locker will send an OTP request to the server
On server, an OTP will be generated and sent to the user via email and to the Locker via network
On Entering Correct OTP, the servo motor will rotate and the locker will be unlocked
Pressing D can remove the last entered digit while entering OTP
There will be 3 chances to enter the specific OTP correctly. If that exceeds, the user has to request for a new OTP by pressing Star (*)
The locker can request for new OTP maximum 3 times from the Server within any 15 minutes. If that exceeds, the locker will be banned by the server for more 15 minutes.
After the Locker was unlocked, Hash (#) need to be pressed to Lock the locker again.

NodeMCU and the server Computer Both should be connected to the same Wifi
First Check the IP address of the server in the local network interface
Put the IP address and all wifi credentials in the CryptoLocker.ino File at desired fields
Install all required libraries in Arduino IDE
Upload the code in NodeMCU
Put the sender email credentials and a reciever email address in the server.py File at desired fields
Install required libraries (NOTE: Python should be pre-installed)

pip install Flask

NodeMCU	Hex Keypad	Servo Motor	Details
D0		PWM Pin (Orange Wire)	Sends PWM Signal to Rotate
D1	Row Pin 1		Connects First Row
D2	Row Pin 2		Connects Second Row
D3	Row Pin 3		Connects Third Row
D4	Row Pin 4		Connects Fourth Row
D5	Col Pin 1		Connects First Coloumn
D6	Col Pin 2		Connects Second Coloumn
D7	Col Pin 3		Connects Third Coloumn
D8	Col Pin 4		Connects Fourth Coloumn