Remote-Controlled Access System | Arduino, IR and Servo

An Arduino/IR/servo access-control prototype later extended with desktop serial control and physical-state feedback.

This 2014 project used an Arduino, infrared receiver, remote control and servo motor to provide an alternative control path for the access-control experiments.

Control Flow

The infrared receiver produced a code that was decoded on the Arduino. Only the expected command changed the servo position, turning a user action into an explicit physical state transition.

remote control
→ IR receiver
→ command decoding
→ state decision
→ servo

Although the input method differed from the RFID project, the engineering problem was similar: detect a physical input reliably, distinguish a valid command and move the actuator only from a defined state.

Desktop Control

I later developed a desktop application that communicated with the Arduino over the serial port. The application could request the current door state, issue open/close commands and display the feedback returned by the controller.

This made an important distinction visible: sending a command is not the same as proving that the physical state changed. Feedback was required to keep the operator view aligned with the actual controller state.

Mechatronics Context

The project was small, but it combined input sensing, control logic, communication and actuation in one system. That relationship between software state and physical behavior later became central in my robotics and control-software work.

Related project: RFID Access-Control System.