The portable computers called laptops are heavy and not compact. The laptops with touch facilities are relatively costlier and they require the user to be in close contact with the screen, causing eye complications. Also, it requires a connection to the projector separately while doing presentations. To address most of these issues, a portable and projectable mini-PC design is proposed. It includes the built-in design of a mini portable screen cum projector. In addition, a user-friendly environment is created using voicecontrolled models to avoid the need for the keyboard and efficient presentation control through hand movements. Moreover, a projector module is built using the principles of the lens. In the hardware, the main module of Raspberry Pi is interfaced with other peripherals. The projector module is built with lenses by applying the principles of the lens. The voice module activated by the CPU remains in an active state. The hand gesture module that uses ESP32 is interfaced with raspberry-pi via Bluetooth.
In conventional systems of Toll Plaza, the operators collect the toll fee from the vehicle drivers and acknowledge it with a receipt. This manual process is timeconsuming and causing a longer waiting time for the vehicles to stay in the queue. In recent days, one of the advancements made in the Toll Collection system to reduce the waiting time of vehicles is the RFID FASTag method. It permits electronic payment and speeds up the toll collection process. This paper proposes a solution to overcome the drawbacks of the currently used RFID FASTag -such as double deduction of payment from the customer account and the physical damages to RFID FASTag. This method ensures the automated cashless quick transaction at toll centers with the assured single deduction of payment for the trip. Arduino IDE is used to program Node-MCU, having an in-built Wi-Fi facility to notify the owner about the location of the car.
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