DIY IoT: Build a ‘Net-Connected System Today

It’s time to join the Internet of Things (IoT) revolution. Try building a ‘Net-enabled design with WIZnet’s W5500 “smart” Ethernet chip. It’s easier than you think.

In a thorough introduction to the technology, Tom Cantrell presented a garage door monitoring design. He explained:

The W5500 (see Figure 1) starts with a standard 10/100 Ethernet interface (i.e., MAC and PHY) but then goes further with large RAM buffers (16-KB transmit and 16-KB receive) and hardware TCP/IP protocol processing. I discovered WIZnet’s first chip, the  W3100, way back in 2001. Of course by now, as with all things  silicon, the new W5500 is better, faster, and  lower cost. But the concept is still exactly  the same: “Internet enable” applications by  handling the network chores in hardware so  the application microcontroller doesn’t have to do it in software.

Cantrell - WIZ550io

Figure 1: The WIZnet W5500 is an Ethernet chip with a difference—large RAM buffers and hardware TCP/IP processing that make it easy for any microcontroller to go online.

The large RAM buffers help decouple the  microcontroller from network activity. In a  recent project (see my article, “Weatherize  Your Embedded App,” Circuit Cellar 273,  2013), I used the RAM to receive an entire  10-KB+ webpage, completely eliminating the  need for the microcontroller to juggle data at  network speed. And any of the 32-KB on-chip  RAM that isn’t needed for network buffering  is free for general-purpose use, a big plus for  typically RAM-constrained microcontrollers. The other major WIZnet hardware assist  is TCP/IP processing using IP addresses, sockets, and familiar commands including OPEN, CONNECT, SEND, RECEIVE, DISCONNECT.  The high-level interface to the network frees  up microcontroller cycles and code space that  would otherwise be needed for a software TCP/IP stack.

Cantrell goes on to present his design for a ‘Net-connected garage door monitoring system.

For prototyping, check out the WIZnet  ioShield (see Photo 1), which is a baseboard  for the WIZ550io that includes an SD card  socket. There are ioShields for different  platforms (e.g., Arduino, LaunchPad,  mbed, etc.), and with 0.1” headers they are  breadboard friendly.

Photo 1: If you want a fancy server with lots of eye candy, a microSD card is the way to go. The WIZnet ioShields include the card socket and are available for various platforms. The Arduino version is shown here.

Photo 1: If you want a fancy server with lots of eye candy, a microSD card is the way to go. The WIZnet ioShields include the card socket and are available for various platforms. The Arduino version is shown here.

Cantrell prototyped a client version of what he calls his “garage  door ‘Thing’ using an Arduino  and a WIZ550io connected to Exosite (see Photo 2).

A prototype of the client version of my garage “Thing” is shown.

Photo 2: A prototype of the client version of my garage “Thing”

Wondering how to get two clients (e.g., ) to interact with each other? Cantrell used Exosite.

Over on the Exosite website, after signing up for a  free “Developer” account, it was a quick and easy mainly point-and-click exercise to configure my “Device,” “Data,”  “Events,” and “Alerts” (see Photo 3).  As a client, there’s no need to keep the “Thing’s”  Ethernet link powered all the time. Data only needs to  be sent when the garage door opens or closes, but I also  recommend sending a periodic heartbeat just in case. My  garage door monitor will only generate a minute or two  of network activity (i.e., door state changes and hourly  heartbeats) per day, so there’s opportunity for significant  energy savings compared to a 24/7 server.

It only takes a few minutes to set up a simple Exosite dashboard including an e-mail alert. I can “see“ my  garage door without getting off the couch and now, via Exosite, from the farthest reaches of the web.

It only takes a few minutes to set up a simple Exosite dashboard including an e-mail alert. I can “see“ my garage door without getting off the couch and now, via Exosite, from the farthest reaches of the web.

You can download the entire article,  “Connect the Magic: An Introduction to the WIZnet W550,” for free to learn about Cantrell’s garage door control system built with a WIZnet and an Arduino Uno.

Editor’s note: If you have an idea for an innovative, ’Net-enabled electronics system, this is your opportunity to share your original design with the world. Enter the WIZnet Connect the Magic 2014 Design Challenge for a chance to win a share of $15,000 in prizes and gain recognition by Elektor International Media and Circuit Cellar. WIZnet is the sponsor. Eligible entries will be judged on their technical merit, originality, usefulness, cost-effectiveness, and design optimization. The Entry submission deadline is 12:00 PM EST August 3, 2014. How to enter: Implement WIZnet’s WIZ550io Ethernet module, or W5500 chip, in an innovative design; document your project; and then submit your entry. The complete rules and regulations are available on the Challenge webpage.

 

WIZnet Announces WIZ550io & W5500 Discounts at EELive

Today at EELive! in San Jose, CA, WIZnet announced a special promotion tied to the WIZnet Connect the Magic 2014 Design Challenge, which it is sponsoring. For a limited time, WIZnet is offering discounted WIZ550io Ethernet controller modules and W5500 chips via its webshopWiznet-Challenge-EELive

Disclosure: Elektor International Media and Circuit Cellar comprise the challenge administration team.

At this time, WIZnet’s WIZ550io is on sale for $9.95 (original price, $17.00) and the W550 cost $1.49 (original price, $2.87).

WIZnet’s WIZ550io is a module for rapidly developing ’Net-enabled systems. It is an auto-configurable Ethernet controller module that includes the W5500 (TCP/IP-hard-wired chip and PHY embedded), a transformer, and an RJ-45 connector. The module has a unique, embedded real MAC address and auto network configuration capability.

WIZnet's WIZ550io auto configurable Ethernet controller module includes a W5500, transformer, & RJ-45.

WIZnet’s WIZ550io auto configurable Ethernet controller module includes a W5500, transformer, & RJ-45.

The W5500 is a hardwired TCP/IP embedded Ethernet controller that enables Internet connection for embedded systems using Serial Peripheral Interface (SPI).

W5500

W5500

Visit the WIZnet Connect the Magic 2014 Design Challenge webpage for more information about participation and eligibility.

Internet of Things Challenge: WIZ55io Modules Moved Fast

As soon as the WIZNet Connect the Magic 2014 Design Challenge launched on March 3, 2014, Internet of Things (IoT) innovators—from professional electrical engineers to creative electronics DIYers—around world began requesting free WIZnet WIZ550io Ethernet controller modules. And due to the popular demand for the modules, the supply of free units ran out on March 11.

Although free modules are no longer available, anyone with a WIZ550io Ethernet module, or W5500 chip, may participate in the competition.

Participants can purchase eligible parts at shopwiznet.com or shop.wiznet.eu.

The WIZ550io is an auto-configurable Ethernet controller module that includes the W5500 (TCP/IP-hard-wired chip and PHY embedded), transformer, and an RJ-45 connector. The module has a unique, embedded real MAC address and auto network configuration capability.

WIZnet's WIZ550io auto configurable Ethernet controller module includes a W5500, transformer, & RJ-45.

WIZnet’s WIZ550io auto configurable Ethernet controller module includes a W5500, transformer, & RJ-45.

The W5500 chip is a Hardwired TCP/IP embedded Ethernet controller that enables Internet connection for embedded systems using Serial Peripheral Interface (SPI).

W5500

W5500

The challenge is straightforward. Participants must implement a WIZ550io Ethernet module, or W5500 chip, in an innovative electronics design for a chance to win a share of $15,000 in prizes. The project submission deadline is August 3, 2014. For more information about the challenge, visit http://circuitcellar.com/wiznet2014/.

Sponsor: WIZnet

Internet of Things Challenge: WIZnet Connect the Magic 2014 Launches

Elektor International Media (EIM) and WIZnet Co, Ltd today officially launched the WIZnet Connect the Magic 2014 Design Challenge, which is a five-month-long contest for electrical engineers, students, and DIYers to develop innovative, ’Net-connected electronic systems around a WIZNet WIZ550io Ethernet controller module or W5500 chip.

According to the Challenge’s rules, entrants must use at least one WIZnet WIZ550io or W5500 chip in a project. Entries will be judged on their technical merit, originality, usefulness, cost-effectiveness, and design optimization. Winners will receive a share of $15,000 in prizes and recognition in Elektor and Circuit Cellar magazines. The entry submission deadline is August 3, 2014.

WIZnet's WIZ550io auto configurable Ethernet controller module includes a W5500, transformer, & RJ-45.

WIZnet’s WIZ550io auto configurable Ethernet controller module includes a W5500, transformer, & RJ-45.

The WIZ550io is an auto-configurable Ethernet controller module that includes the W5500 (TCP/IP-hard-wired chip and PHY embedded), transformer, and an RJ-45 connector. The module has a unique, embedded real MAC address and auto network configuration capability. The W5500 chip is a Hardwired TCP/IP embedded Ethernet controller that enables Internet connection for embedded systems using Serial Peripheral Interface (SPI).

“The WIZnet Connect the Magic 2014 Design Challenge is an excellent opportunity for engineers, designers, and students to build ’Net-connected systems with WIZnet’s WIZ550io auto-configurable Ethernet controller module and W5500 chip,” said C. J. Abate, Editor in Chief for EIM’s Circuit Cellar magazine.

The challenge is intended to engage more engineers and innovators in the Internet of Things revolution, which has become a major focus for electronics developers worldwide during the past several months.

W5500

WIZnet W5500 chip

“The engineers, students, and academics that read our publications and comprise our community see the Internet of Things as more than a convenience. They see it as an opportunity—that is, an opportunity to create cutting-edged connected devices and bring them to market,” Abate said. “Thus, it’s our job to introduce our community members to the best components and tools to achieve their IoT-related design goals. We’re doing that by managing this challenge for our partner, WIZnet, whose W5500 chip and WIZ550io Ethernet module enable designers to quickly develop ’Net-connected systems.”

WIZnet has made available a limited number of free WIZ550io Ethernet controller modules for use in the WIZnet 2014 Connect the Magic Design Challenge. To submit a request for a free WIZ550io module, eligible participants can fill out an online sample request form at http://circuitcellar.com/wiznet2014/samplerequest/.

WIZnet is a private fabless semiconductor company founded in 1998 in Korea. WIZnet provides IOcP (Internet Offload co-Processors) and HW TCP/IP chips, best fitted for low-end Non-OS devices connecting to the Ethernet for the internet of things. Visit www.wiznet.co.kr/ for more information.

Elektor International Media (EIM) is the world’s leading source of essential technical information and electronics products for pro engineers, electronics designers, and the companies seeking to engage them. Each day, its international team develops and delivers high-quality content—via a variety of media channels (e.g., magazines, video, digital media, and social media) in several languages—relating to embedded systems, electronics design, DIY electronics, and hi-fi audio. EIM’s brands include Elektor, Circuit Cellar, audioXpress, and Voice Coil. Visit www.elektor.com for more information.

Design Challenge Contact
Challenge Administration
EIM/Circuit Cellar
contest@circuitcellar.com
860-289-0800

WIZnet Support
Americas: support_team@wiznettechnology.com
Asia: support@wiznet.hk
China: support-bj@wiznet.hk
EU: support@wiznet.eu
Korea: support@wiznet.co.kr

Circuit Cellar Editorial
Mary Wilson
Managing Editor
mary@circuitcellar.com
860-289-0800

CC 25th Anniversary Issue: The Past, Present, and Future of Embedded Design

In celebration of Circuit Cellar’s 25th year of publishing electrical engineering articles, we’ll release a special edition magazine around the start of 2013. The issue’s theme will be the past, present, and future of embedded electronics. World-renowned engineers, innovators, academics, and corporate leaders will provide essays, interviews, and projects on embedded design-related topics such as mixed-signal designs, the future of 8-bit chips, rapid prototyping, FPGAs, graphical user interfaces, embedded security, and much more.

Here are some of the essay topics that will appear in the issue:

  • The history of Circuit Cellar — Steve Ciarcia (Founder, Circuit Cellar, Engineer)
  • Do small-RAM devices have a future? — by John Regehr (Professor, University of Utah)
  • A review of embedded security risks — by Patrick Schaumont (Professor, Virginia Tech)
  • The DIY electronics revolution — by Limor Fried (Founder, Adafruit Industries)
  • The future of rapid prototyping — by Simon Ford (ARM mbed, Engineer)
  • Robust design — by George Novacek (Engineer, Retired Aerospace Executive)
  • Twenty-five essential embedded system design principles — by Bob Japenga (Embedded Systems Engineer, Co-Founder, Microtools Inc.)
  • Mixed-signal designs: the 25 errors you’ll make at least once — by Robert Lacoste (Founder, Alciom; Engineer)
  • User interface tips for embedded designers — by Curt Twillinger (Engineer)
  • Thinking in terms of hardware platforms, not chips — by Clemens Valens (Engineer, Elektor)
  • The future of FPGAs — by Colin O’Flynn (Engineer)
  • The future of e-learning for engineers and programmers — by Marty Hauff (e-Learning Specialist, Altium)
  • And more!

Interviews

We’ll feature interviews with embedded industry leaders and forward-thinking embedded design engineers and programmers such as:

More Content

In addition to the essays and interviews listed above, the issue will also include:

  • PROJECTS will be available via QR codes
  • INFOGRAPHICS depicting tech-related likes, dislikes, and ideas of hundreds of engineers.
  • And a few surprises!

Who Gets It?

All Circuit Cellar subscribers will receive the 25th Anniversary issue. Additionally, the magazine will be available online and promoted by Circuit Cellar’s parent company, Elektor International Media.

Get Involved

Want to get involved? Sponsorship and advertising opportunities are still available. Find out more by contacting Peter Wostrel at Strategic Media Marketing at 978-281-7708 (ext. 100) or peter@smmarketing.us. Inquire about editorial opportunities by contacting the editorial department.

About Circuit Cellar

Steve Ciarcia launched Circuit Cellar magazine in 1988. From its beginning as “Ciarcia’s Circuit Cellar,” a popular, long-running column in BYTE magazine, Ciarcia leveraged his engineering knowledge and passion for writing about it by launching his own publication. Since then, tens of thousands of readers around the world have come to regard Circuit Cellar as the #1 source for need-to-know information about embedded electronics, design, and programming.