Electronics Weekly

Simple circuit selects LEDs?

I was puzzling over the classic bistable circuit and wondering if it was possible to expand it to any number of channels. And this is what I came up with. BTW: To make it more interesting (claims I), ...
EDN

Fairy Flashing LED Lights

This simple and cheap circuit is not just for Christmas! There are just two resistors, a small-signal transistor such as a BC547, one ‘flashing’ LED and a string of ‘normal’ LEDs. The flashing LED ...
EDN

Tri-mode charge pumps extend LED driver solutions to white, RGB, and flash LEDs

Sunnyvale, CA — November 8, 2004 — Advanced Analogic Technologies, Inc. (AnalogicTech), a developer of innovative power management solutions, today introduced five new tri-mode, high-efficiency charge ...
Hackaday

Cheating At 5V WS2812 Control To Use 3.3V Data

If you’re looking to control WS2812 (or Neopixel) LEDs using a microcontroller running at 3.3 volts, you might run into some issues. The datasheet tells us that a logic high input will be detected at ...