Created from the first draft PIC18F4520 Microchip (MultiEth), was changed to be compatible with the PIC18F4550 pinguino minimum.
As there was a printer USB port for future implementations on the Board, only a single connection and minimum components were required to put in motion the experience
Pingüino design is similar to Arduino, but you can use the integrated USB PIC, without using USB-RS232 converter. In addition, the IDE is lighter, for it is written in Python and has code completion.
Also has print via USB to a RS232 terminal, but something is still embryonic, failing when trying to display variables.
Pinguino Project test