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Velleman USB Experiment Interface Board KitVelleman Kits

Velleman USB Experiment Interface Board Kit

Velleman USB Experiment Interface Board Kit

Specification Features:

  • 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)
  • Up to 4 cards can be connected to PC
  • General conversion time: 2ms per command
  • Uses Microsoft® human interface device (HID) driver, no external driver required.
  • Diagnostic software, examples and DLL are downloadable via our website


  • Separate output / input test

  • Clear all / set all function

  • Counter function on inputs 1 and 2 with adjustable de-bounce (max 20kHz depends on total I/O load)

  • Analogue output set sliders

  • Analogue input bar-graph indication

  • Minimum system requirements:

    • 1 GHz or faster 32-bit (x86) or 64-bit (x64) processor

    • USB1.1 or higher connection

    • Windows XP or later

Read the fully Illustrated Assembly Manual for K8055N

PDF Download





Dimensions (PCB)

145 x 89 x 20mm



The K8055N 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 (XP, Vista, Windows7) applications in Delphi, Visual Basic, C++ Builder or any other 32-bit Windows application development tool that supports calls to a DLL. Source code examples for Visual Basic, Visual C++, Visual C#, Excel, Delphi and Borland C++ builder are available.

The Velleman K8055N is available as a ready built module VM110N

Additional software to up grade and improve this product is available from our download section on this website.


iPhone/iPad app used for the Velleman K8055N & VM110N USB Experiment Interface Board. Download the application here: K8055N iPhone application.

Android version of the demonstration app used for the Velleman K8055N & VM110N USB Experiment Interface Board. Download the application here: K8055N Android application.

Order Code Each 
K8055NVelleman USB Experiment Interface Board Kit18.50 


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