Luggage Office Controller that allows user to leave luggage and then pay bills for storage time.

Small device that measures 2 digital temperature probes and 2 analog air humidity probes. Can send data using RS485 to central control station or data logger.

Writing different kinds of firmware programs for Atmel AVR Microcontrollers using C/C++ programming language needs knowledge of operation of internal peripherals, high grade of optimization, efficient power use, and many other issues.