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I built this beautiful LED matrix display with an ESP32 for $30

In the world of smart homes, there are plenty of fantastic devices out there that can integrate well with Home Assistant and your other tools, and while dedicated sensors are great for their ...
Geeky Gadgets

Pixie Chroma mini Arduino LED matrix displays from $45

Arduino enthusiasts interested in creating a changeable RGB LED matrix might be interested in the new Pixie Chroma displays created specifically for the Arduino platform by the engineers and develop ...
EDN

Dot-matrix displays use blue LEDs

About the width of a AAA battery, the HCMS-2919 (0.15-in. high characters) and HCMS-2976 (0.2-in.) LED displays are and can enhance the appearance of products with blue display characters that are ...
Hackaday

Big LED Matrix Becomes Tiny LED Matrix Thanks To Fiber Optics

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. Need ...