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IKEA lamp mod – STRÅLA
I love IKEA and her low cost products.
Last week I found this STRÅLA lamp.
The cost is $4.99, so I bought it.
Lighting the lamp I saw that it ‘s very pretty but also … too soft…
So I thought to modify the LED and add a RGB led.
With simple modify you can obtain a dinamic lamp.
I used an Arduino to do a fast work, but of course it isn’t necessary.
You can use a small microcontroller like a PIC12F675, or a ATTiny.
And this it the result:
How to
Before all, you have to buy a STRÅLA
Open the package
And disassemble the original LED
As you can see the LED shape isn’t normal, but there is a cone in the center to better spread the light.
So I modify the RGB led to obtain the same effects and I also smoothed the surface.
Connect the wire to the led and reassemble all.
To connect the RGB led I used a strip wire and some pin.
And now you can connect this pin to PWM ports of Arduino.
The black, blue and white wire are the RGB pin of the LED.
The red one is the Anode.
The sketch
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/* IKEA Strala mods created 2011 by Boris Landoni This example code is in the public domain. http://www.open-electronics.org http://www.futurashop.it http://blog.elettronicain.it/ */ #include <EEPROM.h> int red = 9; // RED LED connected to PWM pin 3 int green = 10; // GREEN LED connected to PWM pin 5 int blue = 11; // BLUE LED connected to PWM pin 6 int r=50; int g=100; int b=150; int rup; int gup; int bup; int fader=1; int inc=10; void setup() { // start the Ethernet connection and the server: Serial.begin(9600); Serial.println("Serial READY"); r = EEPROM.read(1); g = EEPROM.read(2); b = EEPROM.read(3); inc = EEPROM.read(4); fader = EEPROM.read(5); rgb(r, g, b); } void loop() { if (fader==1){ funcfader(); } } void funcfader(){ Serial.println("fader"); if (rup==1){r+=1;} else{r-=1;} if (r>=255){rup=0;} if (r<=0){rup=1;} if (gup==1){g+=1;} else{g-=1;} if (g>=255){gup=0;} if (g<=0){gup=1;} if (bup==1){b+=1;} else{b-=1;} if (b>=255){bup=0;} if (b<=0){bup=1;} delay(inc*2); rgb(r, g, b); } void rgb(int r, int g, int b) { Serial.print("RGB: "); Serial.print(r); Serial.print(" "); Serial.print(g); Serial.print(" "); Serial.print(b); if (r>255) r=255; if (g>255) g=255; if (b>255) b=255; if (r<0) r=0; if (g<0) g=0; if (b<0) b=0; analogWrite(red, r); analogWrite(green, g); analogWrite(blue, b); } |
Good modding
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