Following on with the microcontroller shootout, today we’re going to look at the ECIO28P from Matrix Multimedia. This is a nice little system which is based on a PIC18F2455 but with Matrix’s own bootloader flashed on to it. The system also comes in a 40 pin version which offers more I/O. The first thing to note about this board is it’s size. It measures 5.5cm x 2cm in total and is perfectly sized to fit into most breadboards. Another thing I noticed with this board is the quality of the pin headers. I know it may seem like a minor detail but a lot of other boards come with the cheapest headers available at the time of manufacturing. The pins on the ECIO28P are just that bit nicer. Again, not massively relevant but I did notice it.