A light-sensitive stylus wired to a video terminal used to draw pictures or select menu options. The user brings the pen to the desired point on screen and presses the pen button to make contact.

The LED Writing Light by MyLight Brand Lighting is the platypus of pens. A pen and a flashlight merged together, it looks bizarre with a fat barrel and gigantic bulbous head. The weird design is also ...

Who needs a 1920×1080 OLED display when you can have an 8×8 matrix of LED goodness? That’s the question [Kathy] asked when she built this LED matrix light pen project. It looks simple enough – a ...

There's something special about 80's technology. So much of it has the feeling of a first draft, of dipping one's toe into a deep pool while trying to figure out the best way to use technology. So it ...

Sometimes the simplest of projects end up revealing the most interesting of things, as for example is the case with [Ryo Mukai]’s light pen for the Vectrex console. It’s an extremely simple device ...

Physicians and repair engineers often use small light pens for visual examination Spurposes. Rugged and expensive as these pens may be, their weak point is the bulb, which is a ‘serviceable’ part. In ...