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Motion-sensor equipped Power LED Driver

A compact board containing an AVR microcontroller that controls a power LED driver which can be activated via motion sensor

roger_archibaldroger_archibald
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  • Description
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  • Logs 8
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This project was created on 01/18/2017 and last updated a year ago.

Description

This board/project is all about a compact board packed with an ATTiny microcontroller driving an LM3405 power LED driver. The Tiny is constantly monitoring an on-board motion sensor and can activate the LED driver when motion is detected.

I initially designed this to be part of an under-cabinet, motion-sensor-activated LED lighting system...While preparing food in the kitchen, the sensor sees your hands moving and keeps the counter lit up. When finishing in the kitchen, just walk away and the lights turn off a few minutes later. No wasted energy and hands-free operation. We've become addicted to this kitchen light, and this circuit could also be put to many other cool uses from security to ambient/decorative lighting.

Power LED's are a lot of fun to play with but they require some sort of drive/regulation. The LM3405 is a great little chip to control power LED's, and this board gives some great control options in a compact package that can be tucked into a tight ar

Files

drilljig3.stl

Standard Tesselated Geometry - 68.15 kB - 03/10/2017 at 02:43

Download

rev3board_drilljig_withletters.stl

Standard Tesselated Geometry - 655.13 kB - 03/10/2017 at 02:42

Download

sliding_endpiece_35mm.stl

Standard Tesselated Geometry - 82.15 kB - 03/10/2017 at 02:40

Download

Assembly Instructions_4foot.pdf

Assembly instructions for 4' LED strips

Adobe Portable Document Format - 33.53 MB - 03/04/2017 at 20:13

Preview
Download

Switch6.sch

Eagle Schematic for this assembly

sch - 765.04 kB - 02/11/2017 at 20:55

See BOM
Download

View all 7 files

Project Logs
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  • A little Fishy

    roger_archibald • 06/29/2017 at 11:42 • 0 comments

    Here's a shot of a custom strip that I made for a fellow member of the Texas Maker's Guild to aide when he's demonstrating his aquaponics setup. The firmware is written so that it's just alway's on, there's no motion sensor or button installed. 3D-printed end caps double as braces to start it up off the tank a little bit.

  • Kits now available on Tindie!

    roger_archibald • 03/14/2017 at 01:44 • 0 comments

    Strip Kits are now on Tindie!

  • Added STL files for light strip assembly

    roger_archibald • 03/10/2017 at 13:05 • 0 comments

    Attached 3 stl files for the end caps that clean up the ends of the Under-Cabinet light strips and drill jigs for drilling the aluminum bits to build up the assembly.

  • Created first draft of light strip assembly instructions

    roger_archibald • 03/04/2017 at 20:21 • 0 comments

    Uploaded a pdf of assembly instructions to build this board into a motion-activated under-cabinet LED light strip. I'm open to any feedback on how to improve this.

  • Link to firmware on GitHub

    roger_archibald • 02/10/2017 at 03:03 • 0 comments

    https://github.com/rogerarchibald/Channel_Switcher

  • Board Overview

    roger_archibald • 02/08/2017 at 05:42 • 0 comments

  • 2' LED strip assembly video

    roger_archibald • 02/07/2017 at 12:57 • 0 comments

    Instructions for assembling this controller into a 2' motion-activated LED strip.

  • Now on Tindie!

    roger_archibald • 02/07/2017 at 12:52 • 0 comments

    This project is now available on Tindie here: https://www.tindie.com/products/rogera/motion-activated-led-driver/

    Soon to come will be a kit with all required parts to put together an under-cabinet motion-activated power LED strip.

View all 8 project logs

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