Been working on getting some leds working with my computer in abit better fasion then just on or off that most ppl have seen tutorials on with the paralel port from the 90s.
I found on ebay these realy slick led strips from 30cm to 5meters in length so i wanted to put three 5 meter strips in my roof in the livingroom as mood light.
just look on ebay for: rgb led strip
This is just a little test with a rs232 led controller from Silicon Craft, it's just 20bucks + shipping so i desided "eh what the hell" and orderd it.
It's Common Anode so make sure yo buy led strips that are Common Anode.
First i just made blue and red react to the total volume from right and left channel via fmod from the mp3 player i made a long time ago.
Then with some help from attacke we did a proper spectrum to make
red=bass
green=middle registry
blue=discant ( kinda like a strob to high-hats)
And here is the code:
Code: Select all
' Fmod mp3 playback with spectrum
' Colors are sent thru com port
' and is made to work with SCColorMIX RGB LED Controller from silicon craft (www.siliconcraft.net)
' Lisence = Do what u want! ( but plz credit us :P )
' by TbbW and Attacke
'' Open the com port
Open Com "COM3:9600,N,8,1,CD0,CS0,DS0" As #1
#Include Once "fmod.bi"
Declare Sub set_color(ByVal col_r As UByte, ByVal col_g As UByte, ByVal col_b As UByte)
Declare Sub ErrorQuit( ByVal Message As String )
Declare Sub GetSpectrum()
Const FALSE = 0
Const TRUE = 1
Dim song As Integer Ptr
Dim As integer chan1,chan2,chan3
Dim Shared As Single Ptr SpectrumArray
SpectrumArray = Allocate(150*SizeOf(Single))
'' Check DLL Version.
If( FSOUND_GetVersion() < FMOD_VERSION ) Then
ErrorQuit( "FMOD version " & FMOD_VERSION & " or greater required" )
End If
'' Init Fmod
If( FSOUND_Init(44100, 32, FSOUND_INIT_ACCURATEVULEVELS And FSOUND_INIT_GLOBALFOCUS And FSOUND_OUTPUT_DSOUND) = FALSE ) Then
ErrorQuit( "Can't initialize FMOD" )
End If
'' Load mp3 song.
song = FSOUND_Stream_Open("Mega_Man_2_Nuclear_Flash_OC_ReMix.mp3",FSOUND_STEREO,0,0)
If ( song = 0 ) Then
ErrorQuit( "cant open song... sry!" )
End If
'' ScreenRes 250,50,32,1,28
ScreenRes 250,100,32,1
FSOUND_Stream_Play( 0 , song )
FSOUND_DSP_SetActive(FSOUND_DSP_GetFFTUnit(), true)
FSOUND_DSP_SetPriority(FSOUND_DSP_GetFFTUnit(), 150)
Do
'' Get the spectrum from fmod.
GetSpectrum()
ScreenLock
Cls
'' Red Spectrum
For c As Integer = 0 To 29
Line (c,50)-(c,50-(SpectrumArray[c]*100)),RGB(255,0,0)
chan1 += (SpectrumArray[c]*255)
Next
'' Green Spectrum
For c As Integer = 30 To 99
Line (c,50)-(c,50-(SpectrumArray[c]*100)),RGB(0,255,0)
chan2 += (SpectrumArray[c]*255)
Next
'' Blue Spectrum
For c As Integer = 100 To 149
Line (c,50)-(c,50-(SpectrumArray[c]*100)),RGB(0,0,255)
chan3 += (SpectrumArray[c]*255)
Next
'' Blit color
Line (0,50)-(250,100),Rgb((chan1/5),(chan2/5),(chan3/5)),bf
'' Send color to com-port
set_color((chan1/5),(chan2/5),(chan3/5))
ScreenUnLock
''set_color(chan1 * 100,chan2 * 100,chan3 * 100)
chan1=0:chan2=0:chan3=0
Loop Until Inkey = Chr(27)
'' Cleanup
Deallocate(SpectrumArray)
'' Fmod Cleanup.
FSOUND_StopSound(0)
FSOUND_Close
'' Set the led's to off
set_color(0,0,0)
'' Close Com port.
Close #1
Sub ErrorQuit( ByVal Message As String )
Print "ERROR: "; Message
FSOUND_Close
End 1
End Sub
Sub set_color(ByVal col_r As UByte, ByVal col_g As UByte, ByVal col_b As UByte)
'' Prefix to send instant color codes with this one is 0xFF and 0x01 followed by RRGGBB in total 5 bytes.
Put #1,,Chr(255)+Chr(01)+Chr(col_r)+Chr(col_g)+Chr(col_b)
End Sub
sub GetSpectrum()
Static As Single Ptr FSOUNDSpectrum
If(FSOUNDSpectrum = 0) then
FSOUNDSpectrum = FSOUND_DSP_GetSpectrum()
End If
Dim As integer ctr = 0
Dim As Integer FreqPerBand = Fix(448 / 150)
for i As Integer = 0 To 149
SpectrumArray[i] = 0
for j As Integer = 0 to FreqPerBand-1
SpectrumArray[i] = FSOUNDSpectrum[i]
ctr += 1
Next
SpectrumArray[i] /= FreqPerBand
Next
End SubI'm using a universial laptop charger at 15volts.
So i'm overloading the led strip by 3Volts since it's made for 12Volts but it's the only way to get enuff miliamps to power the 1meter led strip i'm using.
Some live action:
http://www.youtube.com/watch?v=JdLsSXRoHEc