This work presents the design and implementation of a simple electronic system using PCB design, Arduino interfacing, and sensor integration. The circuit schematic was designed using Express SCH, and the PCB layout was developed in Express PCB by following standard PCB design rules. The PCB was fabricated using the toner transfer and chemical etching method. The system uses an Arduino microcontroller for interfacing and control. Different sensors such as a PIR sensor, MQ6 gas sensor, and thermistor were connected for motion detection, gas detection, and temperature sensing. A Visual Basic 6 (VB6) interface was also developed for displaying sensor information on a computer. The work demonstrates the complete process of schematic design, PCB fabrication, hardware implementation, and software interfacing. The developed system is suitable for educational and prototype applications.
PCB, Arduino, Express SCH, Sensor Interfacing, Gas Sensor, PIR Sensor, Thermistor.
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