Mobile Foldable Keyboard: Pittheus 持ち歩ける折り畳めるキーボード: ピッテウス I created mobile keyboard before. This time I make it more compact by folding. Folding The main feature of this keyboad is folding. I design hinge too. Because the hinge is the key of creating compact keyboard. Keymap The keymap is based on 4x6 per half, but added 2 more keys around hinges. Both left and right hands are tilted 20°. I picked