Using the cirrus logic CS5464 for AC current measurement by Corgi-Tronics:
Continuing the series on examining devices to measure AC current, this time we’ll try out the CS5464 from Cirrus Logic. I initially built it up on a breadboard, but I’ll skip writing up this test and instead build up a prototype and run AC line power through it.
This is a Three-channel, Single-phase Power/Energy monitoring chip, and also can use current shunts and is intended for power meters.
This device provides no direct isolation, instead the entire device (input and output) directly coupled to the AC power line. Any isolation must be provided separately.
Using the cirrus logic CS5464 for AC current measurement - [Link]
Luca Dentella build 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 ENC28j60-based shields with Arduino.
SDWebServer – enc28J60 and Arduino - [Link]
Representatives from the Fraunhofer Institute for Photonic Microsystems IPMS in Dresden will be showing off their Li-Fi wireless communication system at the upcoming electronica exhibition held in Munich from November 11 to 14. The system uses infra-red light as the transmission medium and can transfer data at a speed of up to 1 Gigabit per second over a distance of up to 10 meters.
Li-Fi Goes Live at electronica - [Link]
Find out the WunderBar – the OpenSensor Cloud Platform enabling to easily develop applications for the physical world.
The WunderBar IoT (Internet of Things) Starter Kit from company relayr mimics the appearance of a chocolate bar with a WiFi enabled master module, plus six detachable smart sensor mini-modules.
The WunderBar Internet of Things WiFi & Bluetooth Sensor Starter Kit is a quick start development tool for software application developers unfamiliar with complex wireless hardware designing, and a complete open-source wireless hardware reference design. WunderBar provides to hardware design engineers an out-of-the-box development tool that helps users get started quickly building, inventing, developing, and experimenting with Internet of Things senor based designs using WiFi and BLE senor applications.
Made of seven modules, the WunderBar main module is fitted with an ARM Cortex ‘M’ micro -processor, which connects to the internet through the WiFi unit. Bluetooth Low energy is used to communicate with the other modules. All of the activity that happens around the WunderBar is sent to the WunderBar platform, where you can easily access and work with the signals.
Break, place and program
It works right out of the box. It is energy efficient, fast, secure and designed for developers, makers and manufacturers.
WunderBar has six powerful smart modules, each equipped with its own Bluetooth Low Energy (Beacon) processors and battery that can power the units for up to a year. Light / Color / Proximity, Gyroscope / Accelerometer, Thermometer / Humidity, IR Transmitter (remote control), A connector to the easy Grove System of Sensors and Actuators that are all Arduino compatible and a Noise/Sound sensor. The Starter Kit has available for download various software development kits (SDKs) for iOS, Android and Node.js. including test Apps which can be downloaded from relayr.io. Libraries for node.js, python and more will be supported soon.
WunderBar is the easiest way to create innovative and useful apps to connect smart devices without needing to learn about hardware. App developers can quickly access data from the physical world with WunderBar’s easy-to-use SDKs for iOS, Android and Node.js or with our simple REST API.
Because the WunderBar is still a dev kit, with a little bit of knowledge, and the exposed GPIO pads, you can make almost anything you want smarter. More info at: www.relayr.io/wunderbar The WunderBar will soon be our standard stock item.
WunderBar brings things to life and to internet - [Link]
The Company AMS AG has introduced the non-contact AS5601 Hall-based rotary magnetic position encoding chip. It works by sensing changes in the magnetic field components perpendicular to the surface of the chip and converts field changes into voltages to produce incremental A/B outputs and absolute position information that can be read over an I²C bus. Analog signals from the built-in Hall sensors are amplified and filtered before conversion to binary values. A hardwired CORDIC block (Coordinate Rotation Digital Computer) calculates the angle and magnitude of the magnetic field vector. Magnetic field intensity is used by the automatic gain control (AGC) to adjust the amplification level which compensates for temperature and magnetic field variations.
New Rotary Encoder - [Link]
by MidnightMaker @ instructables.com:
This is a Solar Tracker. A full size, internet cloud connected, smartphone accessible Solar Tracker built mainly from 2x4s and plywood, employing wooden peg gears, recycled curtain poles, nuts, bolts and threaded rod. The solar tracker uses a home built electronic controller incorporating WiFi, stepper motor drives, accelerometer and magnetometer. The tracker was designed to drive a full size 90W panel in azimuth and elevation. The gears driving the tracker are wooden peg gears commonly used in the 16th century. The gears were designed using modern 3D CAD (Solidworks). Connecting the wooden peg gears to the internet cloud just seemed like the right thing to do. This is not a waterproof design – you will need to consider modifications to waterproof your derivative design.
Solar Tracker in the Internet Cloud - [Link]
All parts were developed separately. This allowed adjustments in the assembly as well as smaller changes in case the design of one or other part become required.
Focus on low cost and use of materials easily accessible in the local market.
Homemade Plotter (CNC Machine) - [Link]
The Arduino’s greatest weakness is also it’s greatest triumph. That is, it is only a low power simple processor, which makes internet connectivity for such a simple device difficult. Often the network interface has a few orders of magnitude greater performance than the arduino atmel avr processor itself.
Arduino Yun is the answer to wifi connectivity for arduino. Ushering in a new era known as the internet of things, Yun is actually a complete 400mhz system on chip. There is irony in the fact that the powerful system on chip’s only duty is to serve the lowly AVR. Akin to “You Pass Butter”
Arduino Wifi With Hi Flying HF-LPT100 - [Link]
Colin over at CuPID Controls writes:
We want to put our remote sense and control modules out into the wild and read and aggregate them as it makes sense.
Our basic system layout is as below. We’ve got multiple wireless nodes that broadcast data periodically, and a controller/aggregator that will log this data, acknowledge receipt, and do something useful with it. Eventually, we may have intermediate powered nodes that serve to mesh the grid out, but for now, our nodes just send data to the controller.
We’re currently using these awesome little RF units, called Moteinos. They are an Arduino clone that can use the standard IDE with their bootloader. They’ve got the ever-so-popular ATMega328P chip that is familiar to anybody working with an Arduino Nano or Uno.
Adventures in Moteino: Remote temperature monitor - [Link]
In a break with tradition Textronix have announced their first USB-based item of test equipment. The RSA306 is a spectrum analyzer with a 9 kHz to 6.2 GHz frequency range and a 40 MHz instantaneous bandwidth. According to the press release this is just the first of many test instruments the firm will be launching which takes advantage of the availability of affordable desktop computers and laptops with sufficient processing power to handle complex test and measurement analysis along with high-speed USB 3.0 interfaces.
Tektronix USB Spectrum Analyzer - [Link]