Everyone loves LED matrices, and even if you can’t find what you like commercially, it’s pretty easy to make just what you want. Need it big? No problem; just order a big PCB and some WS2812s.

This massive LED display was assembled on a PVC banner (it can be rolled up!) measuring 2m by 1.5m, it boasts well over 6000 pixels, and as you can see from the photo — looks fantastic.

Engineers might have cracked the code for how the ancient Egyptians built their first pyramids. A new study suggests that water power, not just brute force, helped construct the iconic Step Pyramid of ...