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 ...

Add Yahoo as a preferred source to see more of our stories on Google. You probably never thought that a simple pen could mean the difference between life and death. But if you ever get into a bad car ...

The LED Moonlight pen works like a pen, but has a light on the tip so you can read what you write, even in movie theatres, back alleys, and inside a patient’s abdomen. It’s perfect for creative types ...

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 ...

LED Pen Lights Streamlight’s FiberWrap fiberglass polymer pen lights come in four high-intensity LED colors. The red, green, white and blue PolyStylus pen lights feature a 5-mm LED designed for ...

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 ...