Electronic Counter for Digital and Analog Signals: final box

Although counters are available at most electronic suppliers, it should be fun to build your own multi-purpose generic counter. The resulting counting device reads analog or digital pulses on one or two sensors (such as a DC motor quadrature encoder). The count is shown on a bright, crisp OLED (organic light emitting diode) screen.

Electronic Counter for Digital and Analog Signals: [Via][Link]