The Motif I wanted to use a compact device to measure and display the speed of some orbiting wheels. I quickly created a simple but compact digital tachometer using an Arduino Uno microcontroller and ...

This one may be of interest to Gadget Masters: OMC has released a Fibre Optic Shield for use with Arduino boards... Basically, the OMC H19 Fibre Optic Shield, which is compatible with a Uno, allows an ...