This Arduino based turntable tachometer is originally created at the DIY Audio forum my flavour is a OLED version of this simple but genius turntable tachometer. How to build the tiny handy TT tacho The easy part, put the hardware together the shopping list first,… 
I have finally starting to reach my goal to modify a Rancilio Rocky coffee grinder to become a smart grinder . This is the way the grinder hopefully will look. I will remove the portafilter holder. I rather use a long-drink glas to catch the… 
Read it all here -> The Impossible Group have now merged with Polaroid to create an even better product:
