Maxim’s MAXREFDES99# is an Arduino® form-factor shield which drives a 16×16 LED array for signage applications. This design is ideal for anyone developing a display application. The board features ...

We were struck by how attractive [mircemk’s] Arduino-based frequency counter looks. It also is a reasonably simple build. It can count up to 6.5 MHz which isn’t that much, but there’s a lot you can do ...