The project will function as a wireless programming and debugging link to access hard to reach Arduino board inside a machine by using the XBee protocol.
The device is used for open connection to other internet hosts with the use of Ethernet chip Wiznet W5100 that provides a stack of network IP capable of both TCP and UDP protocol.
The project was designed to build a USB adapter for On Board Diagnostic (OBD2) that is compatible with ELM327 for the plan of replacing RS232 serial ports on PC desktops
The circuit illustrates the use of ATMega168 chip where its time interrupts is applied on s simple timer. It provides tracking of real time while providing accurate alarm clock.