This Network Activity Monitor is built based on ATmega328p microcontroller. It can display your current network status like download and upload speeds, ping, lost packets, email notifications, ADSL parameters and history graph of Down/Up without need to log in to your routers web page or SSH.
In this project, Debian Linux based PC Router runs a shell script which gets download and up speeds of the WAN interface, first hop ping, ping packet loss, WAN IP and others. It then sends these data to a serial port with a serial Bluetooth module attached. In other side, Bluetooth module in the net monitor capture the data and displayed on the 1.8″ graphical LCD.