Velleman USB Experiment Interface Board - Kit Version

SKU: 32VK8055

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  • Regular price $44.95

The K8055 interface board has 5 digital input channels and 8 digital output channels. In addition, there are two analogue inputs and two analogue outputs with 8 bit resolution. The number of inputs/outputs can be further expanded by connecting more (up to a maximum of four) cards to the PC's USB connectors. All communication routines are contained in a Dynamic Link Library (DLL). You may write custom Windows (98SE, 2000, Me, XP) applications in Delphi, Visual Basic, C++ Builder or any other 32-bit Windows application development tool that supports calls to a DLL.


  • Separate output / input test
  • Clear all / set all function
  • Counter function on inputs 1 and 2 with adjustable debounce (max 2kHz depends on total I/O load)
  • Analog output set sliders
  • Analog input bar-graph indication

minimum system requirements:

  • Pentium class CPU
  • USB1.0 or higher connection
  • Windows 98SE or higher (Win NT excluded)
  • CD ROM player and mouse
  • Also available in mounted version: VM110


  • 5 digital inputs (0= ground, 1= open) (on board test buttons provided)
  • 2 analog inputs with attenuation and amplification option (internal test +5V provided)
  • 8 digital open collector output switches (max. 50V/100mA) (on board LED indication)
  • 2 analog outputs:
    • 0 to 5V, output resistance 1K5
  • PWM 0 to 100% open collector outputs max 100mA / 40V (on board LED indication)
  • General conversion time: 20ms per command
  • Power supply through USB: approx. 70mA
  • Dimensions: 5.7 x 3 x 0.8"