Luxeon Logic, brightness control for LED torches
Published in issue 391, July/August 2009
The small super-bright Luxeon LEDs from Philips are suitable for many applications, including small but handy (that is, bright) pocket torches. However, you don't always need maximum brightness, so it would be nice to have a simple brightness control. The circuit described here is baed on an ATtiny microcontroller to enable convenient one-button operation. Three brightness levels can be selected by pressing the button one to three times in succession.
Features * Three selectable brightness levels * One-button operation * Microcontroller control circuit * Current consumption in sleep mode only 1.2 µA
|
Click below to download a PDF copy of this article from Elektor magazine.
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
|