So in this project, we are going to make an IOT based Door Lock System using NodeMCU, Solenoid Lock, and Adafruit IO. Here NodeMCU will act as the main controller and connect the user to the door lock system using the Internet. This allows the user to lock/unlock his Home’s door lock by using a smartphone from anywhere in the world.

Using the IoT based parking system you can easily access the parking slot availability over the internet. This system can completely automate the car parking system. From your entry to the payment and exit all can be done automatically. So here we are building an IOT based Car Parking System using NodeMCU, five IR sensors, and two servo motors.