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Build Your Own USB Interface Board
Velleman K8055N USB Experiment Interface Board DIY Kit
Velleman K8055N USB Experiment Interface Board DIY Kit
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Velleman K8055N USB Experiment Interface Board DIY Kit
Item# 76389
Price: Normally $58.90 
Hot Deal $36.81
Free shipping on orders over $175 - See Details


  • This is an electronic kit and requires assembly
  • 5 digital input channels and 8 digital output channels
  • Connect up to four cards to increase inputs and outputs
  • All communication routines are contained in a Dynamic Link Library (DLL)
  • You can write custom Windows (XP, Vista, Windows7) applications

Essential Info

The Velleman 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 your 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. Hardware and software are downwards compatible with Vellemans previous K8055/VM110 board.

  • Separate output / input test
  • Clear all / set all function
  • Counter function on inputs 1 and 2 with adjustable debounce
  • Analog output set sliders
  • Analog 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

  • 5 digital inputs (0= ground, 1= open) (on board test buttons provided)
  • 2 analog inputs with attenuation and amplification option
  • 8 digital open collector output switches (max. 50V/100mA)
  • 2 analog outputs: - 0 to 5V, output resistance 1K5, PWM 0 to 100% open collector outputs max 100mA/40V
  • 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
  • Power supply through USB: approx. 70mA
  • Dimensions: 5.7 x 3.5 x 0.8"

  • Manuals/Software

    What's Included

  • 1x - USB Experiment Interface Board DIY Kit
  • 1x - User Manual
  • Important notes:
    Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
    Manufacturer contact information: Velleman Inc, Tel: (817) 284-7785 Ext


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    Share your thoughts with other customers
    TOM -- las vegas, NV   3/22/2014
    Very useful info in kit. Easy assembly and software download. Unit worked first time. Also have a couple of other Velleman kits that work well.

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