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Archive for the ‘Wi-Fi’ Category

We use the Internet to do everything from filing our taxes to finding good pizza, but most critically it fulfills nearly all of our communication needs. Unfortunately, this reliance can be exploited by those pulling the strings; if your government is trying to do something shady, the first step is likely to be effecting how you can communicate with the outside world. The Internet is heavily censored and monitored in China, and in North Korea the entire country is effectively running on an intranet that’s cutoff from the wider Internet. The need for decentralized information services and communication is very real.

While it might not solve all the world’s communication problems, [::vtol::] writes in to tell us about a very interesting communication device he’s been working on that he calls “Hot Ninja”. Operating on the principle that users might be searching for accessible Wi-Fi networks in a situation where the Internet has been taken down, Hot Ninja allows the user to send simple messages through Wi-Fi SSIDs.

We’ve all seen creatively named Wi-Fi networks before, and the idea here is very much the same. Hot Ninja creates a Wi-Fi network with the user’s message as the SSID in hopes that somebody on a mobile device will see it. The SSID alone could be enough depending on the situation, but Hot Ninja is also able to serve up a basic web page to devices which actually connect. In the video after the break, [::vtol::] even demonstrates some rudimentary BBS-style functionality by presenting the client devices with a text field, the contents of which are saved to a log file.

In terms of hardware, Hot Ninja is made up of an Arduino Mega coupled to three ESP8266 boards, and a battery to keep it all running for up to eight hours so you can subvert a dictatorship while on the move. The user interface is provided by a small OLED screen and a keyboard made entirely of through-hole tactile switches, further reinforcing the trope that touch-typing will be a must have skill in the dystopian future. It might not be the most ergonomic device we’ve ever seen, but the fact it looks like something out of a Neal Stephenson novel more than makes up for it in our book.

This is not the first time we’ve seen Wi-Fi SSIDs used as a method of communication, thanks largely to how easy the ESP8266 makes it. For his part, [::vtol::] has previously experimented with using them to culturally enrich the masses.

A new season, a new partner! We’ve had our sights set on 4D Systems’ touchscreen product for quite some time, and we’re excited to finally introduce that this Arduino and Genuino-compatible product is joining the AtHeart program. The 4Duino-24 is a 2.4-inch, 240×320-pixel Intelligent Display Module with Wi-Fi capabilities.

“For years Arduino/Genuino users have been taking advantage of our Intelligent Display Modules for adding graphical user interfaces with touch capability to their applications. With the 4Duino-24 we wanted to make something a bit more special and combine some of the more popular shields and the ATmega32U4 into a compact easy to use package. We are delighted to become part of the AtHeart program and very much look forward to seeing a full variety of applications running on the 4Duino-24.” – Markku Riihonen, Products and Business Development Manager, 4D Systems.

Perfect for your next creative IoT project, the 4Duino-24 runs on an ATmega32U4 MCU and is powered by the 4D Systems PICASO Graphics Processor that offers an array of display functionality and options for any designer and Maker. The 4Duino-24 also includes the popular ESP8266 module, which is pre-programmed with the AT command set firmware enabling the 4Duino to have Wi-Fi functionality right out of the box.

Beyond that, the 4Duino-24 is equipped with an onboard microSD connector and headers in the layout of an Arduino, including power pins (5V, 3.3V, GND and VIN), 20 digital I/O pins—seven of which can be used as PWM outputs, while 12 pins have analog input capabilities.

The 4Duino-24 can be programmed using the standard Arduino IDE or the 4D Workshop4 IDE and its three new 4Duino-based development environments with the added dimension of graphics. Creating Arduino GUIs doesn’t get any easier!

Ready to get started? You can watch 4D Systems’ 10-minute video below, as well as check out its product page here. The 4Duino-24 is available as starter kit and standalone module at the price of $79 USD/€69.90 (+tax).

lightswitchturneronner-2-copyUse a servo to flick a light switch mechanically — without ever touching 110V power — with this Wi-Fi “Turner Onner”

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The post Make a Wi-Fi Enabled Light Switch Turner Onner appeared first on Make: DIY Projects and Ideas for Makers.


New Project: Build a Reddit Shower Thoughts Printer

arduino, Electronics, iot, printer, reddit, Shower Thoughts, Wi-Fi Commenti disabilitati su New Project: Build a Reddit Shower Thoughts Printer 

Thinking ManUse some simple electronics to build an IoT printer, like this "Thinking Man" who prints titles from Reddit's Shower Thoughts subreddit.

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The post Build a Reddit Shower Thoughts Printer appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.


What’s the future of board games? Some students are making it connected

arduino, board game, inspiration, Wi-Fi Commenti disabilitati su What’s the future of board games? Some students are making it connected 


Fifteen students from Master degree of ECV Aquitaine  under the direction of Tazas Project - an artistic group run by Guillaume Beinat and Alexandre Suné –  created and shared with us a smart board game called “World War Web”.

The goal is simple: survive a computer virus that has infected your machine and, throughout the game, the player should build a strategy  to win this virtual war.

The game runs on Arduino and is composed by a screenprinted board connected to any mobile device plugged on a local WiFi connection. Take a look at the video:


A new Wi-Fi Shield to connect your Arduino to the Internet

arduino, internet, TCP/IP, Wi-Fi, Yun Commenti disabilitati su A new Wi-Fi Shield to connect your Arduino to the Internet 


Boris Landoni @ writes:

Since now on, it will be easy to provide your Arduino with Internet connectivity by using this shield. The shield sports a TCP/IP stack manager, in order to free up the Arduino from some basic tasks. It’s also essential to equip the board with a library, that communicates with the TCP/IP manager and makes it easier to program the Arduino and to let it communicate with other computers via the Internet.

Despite the proliferation of hardware to connect Arduino with the web, and especially despite YUN, we considered useful to design and propose a new WiFi shield for Arduino, which replaces the one already presented.

A new Wi-Fi Shield to connect your Arduino to the Internet - [Link]


Let’s explore Arduino Yún’s unique features – Hardware review

arduino, Arduino Yún, board, Hardware, Linux, review, Wi-Fi, Yun Commenti disabilitati su Let’s explore Arduino Yún’s unique features – Hardware review 

Arduino Yún

As announced a few days ago, the newest addition to the Arduino family, the Arduino Yún, will be available starting September 10. This is the first in a series of posts that will describe some of the Yún’s unique features. Today, we’ll focus on the hardware.


The Yún is unique in the Arduino lineup, as it has a lightweight Linux distribution to complement the traditional microcontroller interface. It also has WiFi and Ethernet connections on board, enabling it to communicate with networks out of the box. The Yún’s Linux and Arduino processors communicate through the Bridge library, allowing Arduino sketches to send commands to the command line interface of Linux.

The Arduino Yún has the same footprint as an Arduino Uno but combines an ATmega32U4 microcontroller (the same as the Leonardo) and a Linux system based on the Atheros AR9331 chipset. Additionally, there are built-in Ethernet and WiFi capabilities. The combination of the classic Arduino programming experience and advanced internet capabilities afforded by a Linux system make the Yún a powerful tool for communicating with the internet of things.

The Yún’s layout keeps the I/O pins the same as the Arduino Leonardo. As such, the Yún is compatible with the most shields designed for Arduino.

With the Yún’s auto-discovery system, your computer can recognize boards connected to the same network. This enables you to upload sketches wirelessly to the Yún. You can still upload sketches to the Yún through the micro-USB connector just as you would with the Leonardo.

The Yún has two separate network interfaces, a 10/100 Mbit/s Fast Ethernet port and a IEEE 802.11 b/g/n standard compliant 2.4GHz WiFi interface, supporting WEP, WPA and WPA2 encryption. The WiFi interface can also operate as an access point (AP). In AP mode any WiFi enabled device can connect directly to the network created on the Yún. While a Yún in this mode can’t connect to the internet, it could act as a hub for a group of WiFi enabled sensors.

Historically, interfacing Arduino with web services has been challenging due to memory restrictions. The Yun’s Linux environment simplifies the means to access internet services by using many if the same tools you would use on your computer. You can run several applications as complex as you need, without stressing the ATmega microcontroller.

To help you develop applications that can connect to popular web services, we have partnered with Temboo, a service that simplifies accessing hundreds of the web’s most popular APIs. A Temboo library comes with the Yún, making it easy to connect to a large variety of online tools. Check out their website for the full list of services they offer.

Connection between the two processors
The Yún’s Bridge library enables communication between the two processors, connecting the hardware serial port of the AR9331 to Serial1 on the 32U4 (digital pins 0 & 1). Another post will describe the library in greater depth. The serial port of the AR9331 exposes the Linux console (aka, the command line interface, or CLI) for communication with the 32U4. The console is a means for the Linux kernel and other processes to output messages to the user and receive input from the user. File and system management tools are installed by default. It’s also possible to install and run your own applications using Bridge.

The ATmega32U4 can be programmed from the AR9331 by uploading a sketch through the Yún’s WiFi interface. When connected to the same WiFi network as your computer, the board will appear under the “Port” menu of the Arduino IDE. The sketch will be transferred to the AR9331, and the Linux distribution will program the ATmega32U4 through the SPI bus, emulating an AVR ISP programmer.

Power consideration
The Yún can be powered through the micro-USB connector, the Vin pin, or the optional Power Over Ethernet (POE) module. When powering the board though the Vin pin, you must supply a regulated 5VDC. There is no on-board voltage regulator for higher voltages.

Linux OS specifications
The Yún runs a version of the OpenWRT Linux distribution called Linino. The on-board 16MB flash memory that contains the Linux image has a full python installation and package manager you can use to install additional software.
The AR9331 has 64 MB of DDR2 RAM available, providing the resources to perform complex tasks like running a web server or streaming video from a webcam.
You can expand the storage memory by adding a micro-SD card or a USB pen drive. By including a directory named “arduino” at the root level of the storage device, it will be automatically recognized by the Yún.

USB Host
The Yún has a USB host port connected to the AR9331. You can connect USB peripherals like webcams, memory sticks, or joypads to this input. Generally, Linux has drivers included for the more common devices like mass storage or mice and keyboards. For more specific devices like webcams, you will need to refer to the device specifications to find the appropriate driver. As the USB port is connected to the Linux processor, it’s not directly accessible from sketches on the 32U4.


The next post about the Yún will focus on the Bridge library, describing how it facilitates communication between the two processors. Stay tuned!


Updating about Arduino Yún (video preview!) and Arduino Robot

Announcements, arduino, board, Linux, Wi-Fi, Yun Commenti disabilitati su Updating about Arduino Yún (video preview!) and Arduino Robot 

Arduino Yún - Unboxing

Some months ago we announced that we were developing a new product to meet the growing demand for wi-fi, linux based boards. The blogpost on the upcoming Arduino YÚN was our most read ever, and since then the attention has stayed high.

Recently, some of you have been asking why the YÚN hasn’t come out yet and why the Arduino Robot is not yet available for purchase.

Simply put, moving to a wifi-enabled linux board is a whole new step for Arduino and it’s taking longer than we expected. Arduino YÚN  is our most complex product ever and we decided to working on getting it right regardless of timing.

The early prototypes boards mounted 8MB of Flash and 32MB of RAM. While we managed to implement most of the YÚN features previously planned inside this amount of memory, we were forced to use optimized versions of the most common software packages: smaller in size but missing a lot of cool features available in the “full” non-optimized version.

We also quickly discovered that there wasn’t plenty of free space remaining for the user to install additional packages or to run complex programs without incurring in stability problems.

Considering this we finally decided to double both Flash and RAM, giving a comfortable 16MB of Flash and 64MB of RAM.

We try our best to get everything done as soon as possible while still providing the quality that we hope distinguishes Arduino products.

The delay in the Arduino Robot is connected to that of YÚN and our distribution processes.

We are really happy about the new Arduino YÚN and we hope the community will be as well.

The board is going to be available on the Arduino Store from September the 10th, while being delivered to our distributors late this month. In the video below you can watch a  preview of the board with me and David Cuartielles giving some more details about it.


From the product pages on the Arduino Store,  for the YÚN and Robot, you can activate an alert that will send you an email when the product is available from the distributors.


Arduino Takes You into the Cloud

AR9331, arduino, Atheros, Wi-Fi, Yun Commenti disabilitati su Arduino Takes You into the Cloud 


The Yun board for Arduino aims to take DIYers into the cloud. The Yun is the first of a family of low cost, low power Arduino boards that run Linux and support Wi-Fi, following the trend toward the Internet of Things (IoT). Yun, named for the Chinese word for cloud, is designed to let the average tinkerer link a new Linux gadget to the Web using a simplified browser interface.

Yun links to the Web via the Hornet AR9331 Wi-Fi chip from Qualcomm Atheros, which supports 2.4 GHz networking and runs a custom distribution of Linux. The Yun roadmap features five products and two separate product families, including some boards designed to run up to four years on two AA batteries. [via]

Arduino Takes You into the Cloud - [Link]

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