---
product_id: 13504976
title: "Velleman K8055 USB Experiment Interface Board"
brand: "velleman"
price: "€ 4.90"
currency: EUR
in_stock: true
url: https://www.desertcart.gr/products/13504976-velleman-k8055-usb-experiment-interface-board
store_origin: GR
region: Greece
---

# 20ms fast USB command response 5 digital inputs & 8 digital outputs 2 analog inputs with amp/attenuation Velleman K8055 USB Experiment Interface Board

**Brand:** velleman
**Price:** € 4.90
**Availability:** ✅ In Stock

## Summary

> ⚡ Supercharge your USB experiments with instant, scalable control!

## Quick Answers

- **What is this?** Velleman K8055 USB Experiment Interface Board by velleman
- **How much does it cost?** € 4.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/13504976-velleman-k8055-usb-experiment-interface-board)

## Best For

- velleman enthusiasts

## Why This Product

- Trusted velleman brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Feedback:** Onboard LEDs for real-time digital output status monitoring
- • **Plug & Play Power:** USB-powered with low 70mA consumption—no extra adapters needed
- • **Developer Friendly:** Comprehensive DLL support for custom Windows apps in multiple languages
- • **Expand Your Control:** Connect up to 4 boards for ultimate I/O scalability
- • **Precision Analog Handling:** Dual analog inputs with built-in amplification and attenuation options

## Overview

The Velleman K8055 USB Experiment Interface Board offers 5 digital inputs, 8 digital outputs, and 2 analog inputs with amplification/attenuation, all powered via USB with a rapid 20ms command response. Expandable up to 4 boards, it supports custom Windows applications through a versatile DLL, making it ideal for precise, scalable electronic experimentation and prototyping.

## Description

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.

## Features

- 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)
- General conversion time: 20ms per command
- Power supply through USB: approx. 70mA

## Product Details

- **Brand:** Velleman
- **Compatible Devices:** Personal Computer
- **Supported Software:** HomeSeer HS3 or HS3PRO
- **Connectivity Technology:** USB
- **Number of Channels:** 17

## Images

![Velleman K8055 USB Experiment Interface Board - Image 1](https://m.media-amazon.com/images/I/41eQgvgFxKL.jpg)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-20*