Teensy USB Shortcut Button

I like to draw technical sketches.

In my work I have the possibility to draw digitally with a Microsoft Surface. Unfortunately, I lacked functions how to quickly activate full screen and e.g. to rotate the drawing sheet.

I have looked at various devices, such as a Microsoft Dial and Griffin PowerMate.

I decided to build a small USB device myself, with which I can use keyboard shortcuts of the drawing software (Autodesk Sketchbook) or others like Photoshop.

With the help of a Teensy 3.2 I was able to implement this project quickly. It offers the possibility to simulate a standard keyboard.

I printed most of the parts in 3D. The only part made of aluminium is the lid on top. The part I still had from an old LED spot housing. Of course, this can also be made from 3D printing. For the more beautiful look I have built an LED ring with diffuser. The encoder comes from Adafruit.com. The encoder knob from farnell.de.

Features

• Works like a standard USB keyboard. As example a „A“ when you push the button once

• simple click, double click, turn left and right. My configuration:Double Click: FullscreenTurn left: Rotate sheet leftTurn right: Rotate Sheet rightNormal click: The LED ring start to blink and you have now new features:Turn left: Undo last stepTurn right: Redo last stepNormal click: Back to normal Setting

• You can use all software with normal shortkeys

Making Of

Ready Device

Components Schematic