A revamp

I've decided to revamp the KeyVision project. While waiting for a breakthrough in haptic technologies, endowing mechanical switch like characteristics to a 19" 18:5 touch screen with a 1920x540 resolution (1/2HD), I'd settle for a tablet or smartphone as keyboard substitutes. No soldering required.

Let's transform a Raspberry PI Zero W into a USB OTG device making it appear as an HID keyboard to the attached host; we'll make the PI run a local node.js web application, at http://localhost, that emulates a touch sensitive, configurable keyboard that sends key press events (touch events really) to the HID interface. We'll configure the PI to start automatically in kiosk mode, thus, if a touch screen (any touch screen) is attached to the PI then we'll have a PVK in our hands—the KeyVision project can be used as the base for any project requiring a keyboard/keypad frontend. Alternatively, by visiting the PI's IP address with a touch device we'll be able to type away on the connected host—do you have a smart TV and are in need of a keyboard?