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Extended usb interface board

Extended usb interface board

Velleman VM140

Extended USB Interface Board

The Velleman VM140 Extended USB Interface Board allows you to connect multiple devices via USB and control them from your computer. With a total of 33 inputs and outputs, including analogue, digital and a pwm specific output, the VM140 Extended USB Interface Board allows you to connect sensors, relays, stepping motors and so much more! Damaging your computer is impossible with the galvanically and optically isolated USB connection – ensuring a high level of secure implementation. All communication routines are contained in the dynamic link library (.dll). You can even create custom Windows applications in Borland Delphi, Borland C++ Builder, Microsoft Visual Basic, Microsoft VC or most other 32-bit Windows application development tools that support calls to a dynamic link library.

*Windows XP is a registered trademark of Microsoft Corporation.


    • power consumption through USB port: approx. 60mA
    • up to 8 cards can be connected to PC
    • power supply through adapter: 12VDC / 300mA (PS1205)
    • PWM frequency: 15.6kHz
    • command execution time: between 21 and 48ms
    • PCB dimensions: 7.68 x 5.59 x 0.79"
    • minimum system requirements:
      • Pentium class CPU or higher with free USB port (1.1 or higher)
      • Microsoft Windows 2000 or Windows XP
      • CD-ROM player and mouse


    • 8 analogue 10 bit resolution inputs: 0…5 or 10VDC / 20k ohms
    • 8 analogue 8 bit resolution outputs: 0…5V or 10VDC / 47 ohms
    • 8 digital inputs: open collector compatible (connection to GND=0) with on-board LED indication
    • 8 digital open collector outputs (max. 50V/100mA) with on-board LED indication
    • one 10 bit PWM output: 0 to 100% open collector output (max 100mA / 40V) with on-board LED indication
    • USB port: USB 1.1 & 2.0 compatible


 Velleman K8061 Are you a fan of Soldering? Purchase the VM140 in Kit form --> Velleman K8061 Extended USB Interface Board Kit.


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Info Sheets

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product