The LEDWiz SDK is a collection of source code projects for using LEDWiz32.dll / LEDWiz64.dll.

It contains source code projects for the following languages:

  • C#
  • C++
  • Delphi
  • VB6
  • VB.NET


Initialize LEDWiz

INT LWZ_Initialize();

Returns: The number of LEDWiz devices detected.

Call this to initialize the device.

Shutdown LEDWiz

VOID LWZ_Shutdown();

Call this to shutdown the device.

Set notification callbacks for attached/removed events



  • id is an identifier for a specific LED-WIZ device

Set a notification callback for attached/removed events. The function you provide will be called whenever a new LED-WIZ is plugged into a USB port or when an existing device is removed.

All Outputs State plus Global Pulse Speed (Most Efficient)

VOID LWZ_SBA(INT id, BYTE bank0, BYTE bank1, BYTE bank2, BYTE bank3, BYTE globalPulseSpeed, BYTE unused0, BYTE unused1);

  • id is an identifier for a specific LED-WIZ device
  • bank0, bank1, bank2, and bank3 equal 8-bit representations of on/off states for banks 1-4
  • globalPulseSpeed equals Global Pulse Speed setting (1 through 7)


LWZ_SBA(id, 255, 255, 255, 255, 2, 0, 0);

All Outputs ON, and Global Pulse Speed set to 2

LWZ_SBA(id, 0, 0, 0, 0, 1, 0, 0);

All Outputs OFF, and Global Pulse Speed set to 1

All Outputs Profile Settings (Most Efficient):

void LWZ_PBA(int id, CHAR *brightness)

  • id is an identifier for a specific LED-WIZ device
  • brightness is a char array of 32 values. array elements are validated to make sure they are legal values.

Each of the 32 parameters coincide with outputs 1-32. A value of 1 to 49 sets the brightness of each LED using PWM (49 is a solid signal). A value of 129-132 indicates an automated pulse mode as follows:

  • 129 = Ramp Up / Ramp Down
  • 130 = On / Off
  • 131 = On / Ramp Down
  • 132 = Ramp Up / On

The speed is controlled by the Global Pulse Speed parameter.


char brightness[32] = {49,49,49,129,49,49,49,49,49,49,49,49,49,20,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49,49};

LWZ-PBA(id, brightness);

Output 4 set to a sawtooth pulse, Output 14 set to a brightness of 20 and the rest of the outputs are at full brightness settings.

NOTE: This command should not be used as an ON/OFF control. It is for setting up the behavior profile of each output. Use the more efficient LWZ_SBA command for switching inputs ON/OFF. This command should only be used when the profile of an input changes.

Release Dates

  • 2-4-2018 - 1.4 - Device re-plug fix
  • 2-2-2018 - 1.3 - Added flush and delay
  • 21-1-2018 - 1.2 - Re-wrote drivers from scratch
  • 14-10-2016 - 1.1 - Added support for 64-bit, changed from cdecl to stdcall (for VB6 support), removed limit checks, added support for last two bytes in SBA call
  • 16-3-2007 - 1.0 - First Release


  • LEDWiz Hardware [GroovyGameGear]
  • LEDWiz32.dll / LEDWiz64.dll [Ben Baker]
  • C# [Ben Baker]
  • C++ [Ben Baker]
  • Delphi [Ben Baker]
  • VB6 [Ben Baker]
  • VB.NET [Ben Baker]


MikeQ for his work on the original driver.


  • Randy T (GroovyGameGear.com): randy@idvtinc.com
  • Ben Baker (LEDWiz SDK Developer): headkaze@gmail.com