Wednesday, August 24, 2011, 03:24 PMHello everyone! As you know I've been working on a wireless Xbee-based home automation system designed to dim conventional lighting through dimmers installed inside walls. This can be found on the Seblectric website at seblectric.com.
Posted by Administrator
Posted by Administrator
Some people have asked me whether I can make a mood-lighting solution for them using colored LEDs. RGB LEDs have always been a great interest of mine, as you can see from my previous blog posts. Instead of making everything myself, I decided to make a modification for the popular Ikea Dioder LED strips. These LED strips can be installed easily in any position and work well for mood lighting purposes. There was only one problem: you have to manually set the colors by pressing the button.
To make it work with the Seblectric Home Automation system, I used my universal Xbee IO Board. The Atmega88 on the IO Board drives the three R,G and B channels all by itself, as the original PIC microcontroller has been removed from the Dioder board. It is now able to receive wireless commands through the Xbee, and the colors will fade to the set color nicely.
I am now selling this system in two versions:
1. Just the IO Board, no Xbee, including preprogrammed Atmega88. All wire connections and modifications to the original Dioder (KZQ-1M) have to be done yourself. EUR29. Add to cart!
2. Four Ikea Dioder LED strips, including modifications, including xbee, programmed Atmega88 and enclosure. Includes shipping and Windows example software. EUR189. Add to cart!
For everyone else, I am releasing the schematic of the IO board, as well as the modifications to the Dioder board so you can do this yourself.
Please remember this is the schematic of my universal IO board. It is in no way specific to the Ikea Dioder hack.
Please refer to this image of the dioder board to learn about the modifications done:
Modifications to Ikea Dioder board:
1. Remove PIC Microcontroller (IC1)
2. Connect +5V and GND from the empty capacitor C2 to the IO Board pins labelled X1-1 and X1-2 on the schematic.
3. The three resistors R1, R3 and R5 on the dioder board correspond to the Red Green and Blue LED channels. Connect these to the IO board input pins 2, 6 and 7. This is because these are connected to the PWM output pins of the Atmega88. These pins are labelled X2-7, X2-2 and X2-3 on the schematic.
4. That's all!