If you had an array of high power addressable LEDs, how would you project them onto a wall? Perhaps you’d use a Fresnel lens, or maybe an individual lens on the top of each. [Joo] faced this ...

I’ve been experimenting with a dichotomy of second screens for quite a long time at this rate. I've used a second phone-as-monitor, a laptop on the desk next to me, and, naturally, a "typical" ...