Xerox Alto’s 3 Mb/s Ethernet: Building a gateway with a BeagleBone

Ken Shirriff documented his experience building a gateway using the BeagleBone single-board computer to communicate with the Alto’s Ethernet we covered previously: I decided to build a gateway that would allow the Alto to communicate with a modern system. The gateway would communicate with the Alto using its obsolete 3Mb/s Ethernet, but could also communicate with […]

Configure your WR703n with a switch (or two)

Martin Melchior has been experimenting with switch-selectable configurations for a TP-Link TL-WR703n router. The setup allows for quick changes in configuration dictated by changes in location or circumstances. It allows the router’s use as a Ethernet to WiFi bridge (Access point), since it’s handy to have your own WiFi at a friend’s house or hotel; […]

SDWebServer – enc28J60 and Arduino

Luca Dentella has informed us of his latest project using an ethernet shield based on the ENC28j60 driver from Microchip. SDWebServer is a complete webserver that can retrieve static elements from an SD card (including a user-defined default webpage) and can also create dynamic pages. This is the latest post in my tutorial about using […]

The EthNode – ATMega based Ethernet board

Mark McKillen shared his EthNode – ATMega based Ethernet board in the forum: Taking inspiration from the good folks at Nanode and an Instructable I saw recently, I’ve come up with “another” AVR based Ethernet board that can be programmed and used like an Arduino. It’s a simple design based on the ATMega and Microchip’s ENC28J60 […]

App note: Ethernet theory of operation

Here is an app note from Microchip describing the basics of Ethernet. It is intended as a reference for people developing Ethernet applications on PIC microcontrollers. Seeing as it’s theoretical, most of the article can be applied to other microcontrollers as well. This document specifies the theory and operation of the Ethernet technology found in […]

Internet Protocol v6 running on MSP430 with ENC28J60

XPG is developing an IPv6 stack for the MSP430 microcontrollers using the ENC28J60 Ethernet IC for MAC/PHY. He demonstrates his proof-of-concept by having the MSP430 send HTTP requests to a custom PHP server at a push of a button, as seen in the video above. Now, as the 2553 only has 512 bytes of RAM […]

Eagle Parts: TPS6120x DC/DC converter and KSZ8851SN Ethernet controller in a QFN packages

Today we added two relatively hard-to-solder parts to our library. Both come in QFN lead-less packages. First is the Texas Instrument’s TPS6120x DC/DC converter (pictured above)  with an integrated switch. The second is the Micrel KSZ8851SN embedded Ethernet controller (pictured below).

Editorial: Our friend Microchip and open source

Microchip jumped into open source last spring with the chipKIT Arduino-compatible development boards and open compiler/IDE. They wanted to tap the existing tutorials, enthusiasm, and customer base of Arduino community, and they were going to play nice with open source. A review of the chipKIT situation today is disappointing. The compiler still replies on closed […]

How to build still another passive ethernet tap

firestorm_v1 from yourwarrantyisvoid has published this detailed tutorial on building and using a passive ethernet tap. His goal in this project is to facilitate network monitoring for intrusion detection purposes, and wanted hardware which will allow the monitoring for traffic without degrading performance.

Passive ethernet tap spies on network connection

tempmj built a passive ethernet tap for monitoring and debugging network connections: I basically took 4 Panduit brand modular ethernet jacks and wired between two of them normally, other than the fact that the TX pairs from “Side A” looped through an extra jack and the TX pairs from “Side B” looped through the remaining […]

Arduino Ethernet + SD card tutorial

Ladyada has posted this detailed tutorial over at Adafruit on using Ethernet and SD card with Arduino. It describes how to use the Arduino to browse files on an SD card remotely. This tutorial is targeted at those who already have quite a bit of Arduino or microcontroller experience and are ‘fluent’ in C/C++/Java!

PROTOTYPE: Ethernet LED driver

We’re releasing a stalled or abandoned prototype every few days while Seeed Studio is on break. We put a lot of work into these projects, but they’re still missing major components and testing. If an abandoned project sparks your interest, we may have PCBs to get you started. The goal of this project is to […]

PROTOTYPE: Ethernet JTAG debugger for OpenOCD

We’re releasing a stalled or abandoned prototype every few days while Seeed Studio is on break. We put a lot of work into these projects, but they’re still missing major components and testing. If an abandoned project sparks your interest, we may have PCBs to get you started. The goal of this project was to […]

Rough draft: 48 channel networked LED controller

Here’s a new project we’d like to develop openly, like the recent logic analyzer board . This rough sketch shows a 48 channel LED controller with an ethernet interface. Our primary goals are: 48 channels of 10bit PWM LED control Ethernet interface Up to 120mA of LEDs per channel The networked LED controller would use […]