---
title: "Open Interface III"
url: "https://maker.wiznet.io/taylor/resellers/open-interface-iii/"
markdown_url: "https://maker.wiznet.io/taylor/resellers/open-interface-iii/md"
type: "VAR: Value-Added Reseller Products"
author: "RemoteQTH"
author_url: "https://remoteqth.com/open-interface.php"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "RemoteQTH"
original_url: "https://remoteqth.com/open-interface.php"
published: "2023-01-02"
language: "en"
hardware: ["WIZnet W5500"]
likes: 2
views: 623
comments: 1
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Open Interface III

> open hardware for any Arduino code for running your own hack

Original author: RemoteQTH (source: https://remoteqth.com/open-interface.php)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Documents and links

- [Github](https://github.com/ok1hra/k3ng_cw_keyer) (code)
- [v3.141](https://remoteqth.com/hw/open-interface-3141.svg) (schematics)

## Article

Original : <https://remoteqth.com/open-interface.php>

: <https://remoteqth.com/wiki/index.php?page=Open+interface+III#How_to_install_Ethernet_module>

Author : RemoteQTH
Published On : 2016-10-30

The author built an interface device between the computer and the transceiver.

![](https://maker.wiznet.io/upload/ckeditor5/491380718%5F1672755687%2Epng)

It is completely open-source hardware and software. It is operated with Linux, OSX, and windows. It is a complete K3NG Arduino CW Keyer.

![](https://maker.wiznet.io/upload/ckeditor5/491380718%5F1672755886%2Epng)

There are schematics and sources which you can [download](https://github.com/ok1hra/k3ng_cw_keyer).

![](https://maker.wiznet.io/upload/ckeditor5/491380718%5F1672755839%2Epng)

But it is sold out now.

![](https://maker.wiznet.io/upload/ckeditor5/491380718%5F1672755731%2Epng)

This is a youtube video.

[Embedded media](https://www.youtube.com/embed/MPjnYawLabk)

This Open Interface III will be a good reference if you enjoy HAM.

Thank you for reading.

---

Source: https://maker.wiznet.io/taylor/resellers/open-interface-iii/