Send short messages over ICMP pings to a RasPi, and display them on a IC2 16x2 LCD
Uses this IC2 16x2 library
https://gist.github.com/DenisFromHR/cc863375a6e19dce359d
Also requires that TCPDUMP can be run as a normal user
HARDWARE
https://www.amazon.com/Qunqi-Serial-Backlight-Arduino-MEGA2560/dp/B01E4YUT3K
Raspberry Pi 3B+