– Power inductor selection tool adds performance data

By Graham Prophet@

Coilcraft has written a Power Inductor Selection Tool that allows users to easily select the appropriate path for their particular search while also providing more application-specific performance data than previously available. – Power inductor selection tool adds performance data – [Link]

Add OLED Display To Your Projects With TeensyView

The Teensy is a complete USB-based microcontroller development system, in a very small footprint, capable of implementing many types of projects. All programming is done via the USB port. You can program for the Teensy in your favorite program editor using C or you can install the Teensyduino add-on for the Arduino IDE and write Arduino sketches for Teensy.

The processor on the Teensy also has access to the USB and can emulate any kind of USB device you need it to be, making it great for USB-MIDI and other HID projects. The 32 bit processor brings a few other features to the table as well, such as multiple channels of Direct Memory Access, several high-resolution ADCs and even an I2S digital audio interface! you can learn more about Teensy by visiting this page.

SparkFun had launched a new add-on to Teensy that can make it possible to add to it display functions. The SparkFun TeensyView brings you an easy way to add a small, white-on-black OLED to your Teensy development board. The 128×32 monochrome display is controlled with the popular SSD1306 IC, and is a great way to display debug information and to visualize data without the need for a serial terminal. The board matches the Teensy 3 form factor perfectly, and was designed from the ground up to be as flexible as possible while still being able to nest down into a low-profile addition for the Teensy.

The TeensyView comes with everything you need except the headers. Additionally, there are jumpers on one side of the board that allow you to configure how the OLED communicates with the attached Teensy. Since this is a headerless board, you have the option to solder on whatever type of header best fits your needs. Headers you may find useful with this product include the Teensy Header Kit, Straight Headers, Long Straight Headers and Female Headers.

Teensy 3.2 is available at SparkFun for $19.95 and TeensyView is available for $14.95. TeensyView right now is out of stock but you can still follow up and get a notification once it returns to stock.

You can know more in-action details by checking this SparkFun tutorial and checking theses links SchematicEagle FilesDrawing BitmapsOLED Memory MapDatasheet (SSD1306), Arduino Library, and GitHub!

Source: SparkFun

Send & Receive Radio With A Single Chip

Fitting transmit and receive capabilities of radio signals into one device may be impossible without using a significant filter, which is needed to isolate sent and received signals from each other.

The major obstacle to achieve that is the weakness of the received signal compared with the much stronger transmitted signal. However, researchers from Cornell University found their way to jump over this obstacle and created a two-way transceiver chip.

Alyosha Molnar, associate professor of electrical and computer engineering (ECE), and Alyssa Apsel, professor of ECE, had come up with a new solution to separate the signals. They made the transmitter consist of six sub-transmitters hooked into an artificial transmission line. Each one sends a weighted signal at regular intervals which combined with others such as a radio frequency signal in the forward direction, and at the same time they cancel each other in the opposite direction (towards to receiver).

The programmability of the individual outputs allows this simultaneous summation and cancellation to be tuned across a wide range of frequencies, and to adjust to signal strength at the antenna.

“You put the antenna at one end and the amplified signal goes out the antenna, and you put the receiver at the other end and that’s where the nulling happens,” Molnar said. “Your receiver sees the antenna through this wire, the transmission line, but it doesn’t see the transmit signal because it’s canceling itself out at that end.”

This research is based on a research reported six years ago by a group from Stanford University, which demonstrated a way for the transmitter to filter its own transmission, allowing the weaker incoming signal to be heard.

One of the sub-transmitter concept enhancements is that it will work over a range of frequencies, and instead of using a filter for every band, signal separation can be controlled digitally.

“You could have a single device that can be anything,” Apsel said. “You wouldn’t have to buy a new piece of equipment to have the newest version of it.”

You can find the full research at the IEEE Journal of Solid State Physics.

Arduino Parking Assistant

addictedToArduino @ designed a Arduino based parking assistant.

To appease my frustration I decided to design a device that would allow me to park in the exact spot every time. I love working with arduinos, leds, sensors, and nearly anything else electronic, so I knew from the start that it would probably end up as a contraption with an Arduino inside and a bunch of leds on the front!

Arduino Parking Assistant – [Link]


Raspberry Pi Security System

MWAGNER @ build a security camera based on Raspberry Pi:

A family member asked me to put a camera in our garage recently, and immediately I decided to use a Pi Zero. Back when I was interviewing for my current job, I was dabbling with the idea of making a wireless, battery powered IP camera that I was going to attach to my dog, and get some cool footage of my dog running around.

Raspberry Pi Security System – [Link]

Inside the vintage 74181 ALU chip

Ken Shirriff writes:

The 74181 ALU (arithmetic/logic unit) chip powered many of the minicomputers of the 1970s: it provided fast 4-bit arithmetic and logic functions, and could be combined to handle larger words, making it a key part of many CPUs.

Inside the vintage 74181 ALU chip – [Link]

10-bit resolution, 70-300 MHz, touchscreen scope priced from €1250

by Graham Prophet @

Rohde & Schwarz recently announced its RTB2000 entry-level oscilloscope, aimed at education, R&D and manufacturing. With an starting price of €1,250, the company says it provides performance previously only available in higher priced oscilloscopes.

10-bit resolution, 70-300 MHz, touchscreen scope priced from €1250 – [Link]

Step‐up DC/DC converters with built‐in inductors and control ICs

Measuring 2.5×2.0×1.0mm, the newly‐developed XCL102/XCL103 series of step‐up micro DC/DC converters is designed with built‐in inductors and control ICs. By Julien Happich @

The use of built‐in inductors also allows PCB layouts to be simplified, minimizing unwanted radiation noise and operational trouble. The input voltage can be selected from 0.65V (operation hold voltage) to 6.0V, and the output voltage from 2.2V to 5.5V

Step‐up DC/DC converters with built‐in inductors and control ICs – [Link]

AT88CK490, A New Atmel CryptoAuthentication USB Dongle Evaluation Kit

Atmel had produced a new USB evaluation kit “AT88CK490” to evaluate the performance and applicability of the Atmel Family of CryptoAuthentication devices. The kit contains three devices; ATSHA204, ATAES132, and ATECC108.

AT88CK490 Kit devices are based on Atmel AT90USB1287 microcontroller which provides a convenient USB 2.0 interface allowing users to understand and experiment with the CryptoAuthentication devices. Developers can use the provided 5-pin interface at the end of the board and can be used to monitor the I2C protocol.

This kit gives engineers, developers, and decision makers a tool to understand the device architecture and its usages for product authentication, confidential file protection, performing two-factor logons, or preventing software piracy.

CryptoAuthentication USB Dongle Kit Features

  • Atmel ATAES132A CryptoAuthentication IC: I2C Address (0xA0)
  • Atmel ATSHA204A CryptoAuthentication IC: I
  • 2C Address (0xC8)
  • Atmel ATECC108A CryptoAuthentication IC: I2C Address (0xC0) – AT88CK490 Only
  • Atmel ATECC508A CryptoAuthentication IC: I
  • 2C Address (0xC0) – AT88CK590 Only
  • Atmel AT90USB1287AVR
    • 128KB of In-system Programmable Flash
    • 4KB EEPROM
    • 8KB Internal SRAM
  • USB 2.0 Full Speed Device
  • Power LED (Red)
  • Three Status LEDs (Blue)

Atmel CryptoAuthentication is a crypto element device family with ultra-secure hardware-based key storage. It is used to ensure that the product and its accessories are original and are not counterfeited. CryptoAuthentication devices support modern cryptographic standards. They are cost-effective, require only a single GPIO, use very little power, operate over a wide voltage range, and work with any MCU.

The AT88CK490 evaluation kit has been designed to work with the Atmel CryptoAuthentication Evaluation Studio (ACES) configuration environment GUI. The complete source code for the Atmel AVR® is available, along with a schematic, a bill of materials, and Gerber files.

Call for Makers: Hackaday Prize for Social Impact Projects

In patnership with Digi-Key, Supply Frame and Microship, Hackaday is calling for the curious, the creative, and the determined who are working to create social change in order to transform the world using their hardware and programming knowledge in addition to scientific, design, and mechanical abilities. This contest by Hackaday will encourage people innovate projects that can impact in people lives.

All you have to do is designing an impactful project that suits you, or collaborate with a team to do it. You can create things like reliable utensils for the disabled, a way for denizens to find clean drinking water in rural villages, refreshable braille displays for image text and a smart home to build a sustainable community. Or go beyond that and create something that has never been seen before. The purpose of the contest is to encourage participants to develop solutions to address technology issues facing humanity today.

With the global collaboration behind this contest, the total prizes will reach $250,000 and they will be divided as following: $120,000 goes to top 120 finalists ($1,000 each), $50,000 Grand Prize, $30,000 Best Product Prize, $20,000 2nd Place, $15,000 3rd Place, $10,000 4th Place and finally a$5,000 5th Place.

The first stage of the Contest will consist of five (5) Challenge Rounds. Participants may enter the Contest during any of the Challenge Rounds. Up to twenty (20) entries from each Challenge Round will be chosen to advance to the final round. Participants must complete the requirements for at least one (1) Challenge Round to be eligible for the final round. An entry may be submitted to any or all of the Challenge Rounds as long as it meets the requirements for each Challenge Round in which it is submitted. All submissions must be in English and must comply with any specified requirements.

Challenge Round 1: (Get Started: Design Your Concept.)

Entry period begins 7:01 a.m. P.D.T on March 20, 2017 and closes 7:00 a.m. P.D.T on May 1, 2017. This round is for showcasing your idea, hacks and logs and presenting the problem and how will your project solve it.

Challenge Round 2: (Internet of Useful Things :: IuT ! IoT)

Entry period begins 7:01 a.m. P.D.T on May 1, 2017 and closes 7:00 a.m. P.D.T on June 12, 2017.
Let’s take Internet of Things and make it practical for everyday life. Internet of Useful Things projects showcase a way to build a better tomorrow with the data you track and analyzeChallenge

Round 3: (Wheels, Wings and Walkers)

Entry period begins 7:01 a.m. P.D.T on June 12, 2017 and closes 7:00 a.m. P.D.T on July 24, 2017. This round is for building things that move, so the objective of the project is movement and support for things that help move humanity forward.

Challenge Round 4: (Assistive Technology)

Entry period begins 7:01 a.m. P.D.T on July 24, 2017 and closes 7:00 a.m. P.D.T on September 4, 2017.  Assistive technology projects ensure a better quality of life for the disabled and enhance learning, working, and daily living.

Challenge Round 5: (Anything Goes)

Entry period begins 7:01 a.m. P.D.T on September 4, 2017 and closes 7:00 a.m. P.D.T on October 16, 2017. No reservation, no theme, no topic. it is up to you to build on your idea that resonates with you and encompasses the spirit of making. Build whatever you think would benefit humans and the world we live in.

Best Product

To be eligible for Best Product the product must not have received more than $2,000,000 in funding within the life of the product. The sum of the product’s dimensions (width + height + depth) must total 36 inches (91.44 centimeters) or less. Best Product Final Round. By 1:50 p.m. P.D.T. on October 21, 2017

It’s time to leverage your talent and find solutions to address a problem facing humanity today. With a new technical design challenge every 6 weeks, you are expanding the frontiers of knowledge and engineering.

In order to bootstrap your project before completing your final application of this contest, Hackaday now gives you the chance to participate in a public voting and win up to $200. Just start your entry to get access to this.
Check the rules of the contest to make sure that your country is eligible to apply. Also check this page to know more details about the contest.