Do this before you sew anything onto your sweater just to make sure the LED string will correctly fit the pattern you drew. Start with the end of the string so the Arduino ends up at the bottom of ...

Yep, RGB LED Christmas Lights with PWM for under $7. Can’t beat that. [James] wrote an Arduino library to control these strings and put it up on Github.

However, his latest video uses some a MAX7219 to create a 600 character scrolling LED sign. You can see a video of the thing, below. Spoiler alert: not all characters are visible at once.

This post will give you an Arduino Pixel LED Controller build idea. The inspiration for this post was an old Pixel LED kit I found in my junk box (see the lead image). The locally made kit includes a ...

8x8 LED Matrix modules are now widely available, and fortunately they are easy to use with our favorite Arduino microcontroller. 8x8 LED Matrix module ...

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...