ABSTRACT
A project design of a system that operates a gate automatically using a microcontroller is a microcontroller based automate controller. When a human or an automobile is going to enter or exit a compound, the system automatically opens the gate. The technology detects light rays emitted by the vehicle’s headlights. The light ray is detected, and the gate is opened using the signal. Different circuit blocks are assembled to guarantee that the system functions as intended. The power supply unit, control unit, sensor unit, and driving unit are among the blocks. The power supply unit is responsible for turning on the complete system and supplying the necessary dc signal. The control section is the logical part of the system that, based on the signal from the sensor unit, determines the state of the entire system. The control part operates with the help of a microcontroller, the ATMEL89S52. The sensor unit receives signals from the vehicle’s or a human’s headlamp and provides signals to identify the presence of a human or a car. This is accomplished by using light-dependent resistors. The driving unit is a DC motor that moves the gate in the direction that the microcontroller commands.
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