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K8055 K8055

USB connection Level 4: Advanced

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)
    • analogue output set sliders
    • analogue 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 analogue inputs with attenuation and amplification option (internal test +5V provided)
  • 8 digital open collector output switches (max. 50V/100mA) (on board LED indication)
  • 2 analogue 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: 145 x 88 x 20mm / 5.7 x 3 x 0.8"


  • K8055, K8055N, VM110, VM110N application for Android

    This is an Android version of the demonstration app used for the Velleman K8055, K8055N, VM110 & VM110N USB Experiment Interface Board.

    Download the application here: K8055 Android application

    © 2011 John Marshall

  • plug-in for IPEmotion measurement software

    Students who are already working with the Velleman K8055 Experiment board will benefit from the plug-in for IPEmotion measurement software..

    Download: Velleman K8055 Plugin

    See how easy it is in this Youtube video!

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