DIY Ambient Lighting

bobo1on1 Wrote:That circuit will just turn the leds on most of the time, what you need to do is pass the vga signals through a lowpass filter, then convert that voltage into a proportional current for the leds.

That being said, you won't get any brightness or color adjustments, which you definitely need, without it most of the video content will look like white light.

why? why filter then pull current? and as far as color and brightness...maybe you could use the TV's/monitors brightness and color controls?

If we wanted to get into that then use two LM324 chips and apply both low pass filtering and V to A conversion with some added resistors. Im not saying this is the BEST solution but its definitely easier and less expensive then having to have an arduino.

How does adjusting the tv's brightness and color change the vga output?

bobo1on1 Wrote:How does adjusting the tv's brightness and color change the vga output?

yes youre correct...my mistake. youwould have to play with color settings on the graphics card inself. This obviously wouldnt work for apple tvs. either way im still unsure of the filtering and converting to current as the ULN 200 darlington pair should take the analog voltage just fine. Maybe use the op amp as a buffer...or opto isolate the signal from the transistor. still seems like a cheap and quick way to produce this same effect...albeit if you have a dual video card setup

ubuntuf4n Wrote:I would also appreciate a guide for your Rainbowduino-method.

Thirded

May I ask you what boblight-x11 settings you are using?

technocoma Wrote:Sorry I still haven't written up a guide. Haven't actually done anything with them for a while but have now built up a PCB for it now and am able to have 8 channels (LED strips) instead of 4.

I will be re-setting it all up at the weekend with new LED strips (to get rid of the dip in the middle) as the old ones were really just a prototype.

So while i'm doing it I shall take some pictures and hopefully be able to explain how it all works

Hey - any updates? I'd REALLY like to know your hardware setup.

does anyone want to build this as a kit to be sold i am sure there will be demand for it !!

i would !!

have got it working currently ?

I think rainbowduino needs too much soldering and is not user friendly to build.
Adalight is based on ws2801 which is much easier to build and noob friendly to solder.

Has someone already build Adalight with boblight? If someone did, can you please share the .pde for arduino and boblight.conf.

Is this https://github.com/adafruit/Adalight/blo...alight.pde code compatible with boblight? As far as i can see only a few changes must be done to expand the numbers of leds in .pde.