Monitors 9 fan tachometers, 5 analog voltages, 4 temperatures, 4 currents and up to 32 humidity sensors, displays all data on LCD and LEDs, drives about 10 parallel I/O and runs relays and controls fan speeds on the basis of temperature using the PWM controller, talks over RS-232 and Ethernet using UDP, tcp, SNMP and SSH protocols. The heavy network stuff is handled by a Lantronix XPORT or MatchPortAR, although all the SNMP and trap handling is done by the PIC.

Virtually everything is programmable through menus. All the display, entry and bounds checking routines take up quite a bit of codespace.