One particular characteristic of wines you'll hear talked about often is its tannins. Tannins are astringent, bitter compounds that naturally occur in plants and deter animals from eating them.

He solved the problem by building the Tannin DIY MIDI controller. Tannin features 19 buttons, 16 potentiometers, and 4 LEDs. Buttons can send different MIDI messages for short presses and long ...