The Aurora Boxealis – A Color Sensing and Mirroring Project

Besides looking damned good on an otherwise bland and ordinary desk, this project is about more than just being attention grabbing eye candy.  It’s about demonstrating a small portion of our single board computer capabilities by hooking up a color sensor, RGB light strip, and enclosing it in a nice looking wooden enclosure.  We’re dubbing it the “aurora boxealis”, and it’s made to stand out from the crowd at trade shows and provide a fun, interactive way to professionally demonstrate an interesting sensor, in this case a color sensor.  Grabbing a color swatch from the table and placing it on the top of the box will trigger the lights to mirror that color.

The Aurora Boxealis – A Color Sensing and Mirroring Project – [Link]

Harvesting Sound Energy From Passing Cars

by Mechanical Attraction @ instructables.com:

There is energy everywhere around us and in many different forms. Many devices have been developed to harvest light, wind, waves, and more. One unusual place of energy harvesting is from passing cars. As cars pass by some of their energy is released in form of sound. Even though the overall energy maybe small it can be harvested. In this Instructable I will show how to apply the solution of Euler–Bernoulli beam theory to design a cantilever beam to oscillate at such a frequency to adsorb sound waves as well as converting its mechanical motion into electricity.

Harvesting Sound Energy From Passing Cars – [Link]

Should you build or buy your next single-board computer?

by Markku Riihonen @ EDN Europe:

Does it make sense to design and build your own single-board computers? It used to be the sensible option for anyone concerned about matching features to production cost.
Traditionally, with your own board design, you have the freedom to add only the components that are absolutely vital to achieving the right level of functionality for the target application. But the relentless rise of the system-on-chip (SoC) device has changed that equation in a number of ways.

Should you build or buy your next single-board computer?- [Link]

New parts library for Mentor PADS & DX Designer accelerates PCB design

Designers can build circuit boards faster with millions of symbols & footprints on SnapEDA.

July 18, 2017 –  SAN FRANCISCO –  Mentor, a Siemens business, and SnapEDA, the Internet’s first parts library for circuit board design, are announcing new support for Mentor PADS® and DX Designer on SnapEDA.

Whether building satellites or medical devices, hardware designers spend days creating digital models for each component on their circuit boards, a painful and time-consuming process that hinders product development.

With today’s launch, Mentor PADS & DX Designer customers will gain access to SnapEDA’s extensive component library containing millions of symbols, footprints, and 3D models, further enhancing the vast resources available for Mentor PCB design software.

All parts are auto-verified with SnapEDA’s proprietary verification technology, helping to reduce risk and unneeded, costly prototype iterations. This technology answers common questions designers have about libraries, such as “what standards does this footprint conform to?”

As the world becomes more connected, electronic devices are proliferating and diversifying, and time-to-market is more crucial than ever for companies to stay competitive.

Slimline SMD Bamboo IN-14 Nixie Clock

@ instructables.com writes:

There are a lot of nixie clocks out there and a lot of them are based on the IN-14 tubes. I wanted to design my own for the sake of designing my own, but also had some specific requirements: Make it as small and thin as possible. A lot of the clocks out there have very bulky bases. CNC a nice case out of bamboo. Because I like bamboo and wanted to get some use out of my little desktop CNC machine. No RGB leds under the tubes. I hate those. Single spin of the PCB, no prototypes. I wanted this to be a relatively quick project. This meant using a microcontroller and RTC I have used before, heavily borrowing from proven designs and using a pre-made power supply to limit the risk of having to iterate the board.

Slimline SMD Bamboo IN-14 Nixie Clock – [Link]

RELATED POSTS

LTC7003 – Fast 60V Protected High Side NMOS Static Switch Driver

The LTC7003 is a fast high side N-channel MOSFET gate driver that operates from input voltages up to 60V. It contains an internal charge pump that fully enhances an external N-channel MOSFET switch, allowing it to remain on indefinitely. Its powerful driver can easily drive large gate capacitances with very short transition times, making it well suited for both high frequency switching applications or static switch applications that require a fast turn-on and/or turn-off time. When an internal comparator senses that the switch current has exceeded a preset level, a fault flag is asserted and the switch is turned off after a period of time set by an external timing capacitor. After a cooldown period, the LTC7003 automatically retries.

LTC7003 – Fast 60V Protected High Side NMOS Static Switch Driver – [Link]

Integrated 36V buck battery charger provides seamless backup power

By Graham Prophet @ eedesignnewseurope.com:

LTC4091 is a complete lithium-ion battery backup management system for 3.45V to 4.45V supply rails that must be kept active during a long duration main power failure. The LTC4091 employs a 36V monolithic buck converter with adaptive output control to provide power to a system load and enable high efficiency battery charging from the buck output.

Integrated 36V buck battery charger provides seamless backup power – [Link]

BME680 measures pressure, humidity, temperature and indoor air quality

The BME680 measures pressure, humidity, temperature and indoor air quality. by Bosch Sensortec:

BME680 is an integrated environmental sensor developed specifically for mobile applications and wearables where size and low power consumption are key requirements. Expanding Bosch Sensortec’s existing family of environmental sensors, the BME680 integrates for the first time individual high linearity and high accuracy sensors for gas, pressure, humidity and temperature. It consists of an 8-pin metal-lid 3.0 x 3.0 x 0.95 mm³ LGA package which is designed for optimized consumption depending on the specific operating mode, long term stability and high EMC robustness.

BME680 measures pressure, humidity, temperature and indoor air quality – [Link]

16X2 LCD Shield with LMD18201 Motor Driver

 

LCD is very important part of many DIY and industrial projects. The 16X2 LCD shield has been designed to develop LCD related projects using 28-40 Pin Pic development board or DSpic development board, along with LCD this shield includes LMD18201 DC Motor driver , 2 Trimmer potentiometer and 4 tact switches with jumpers. Jumpers can be used to connect switches to pre decided port pins or remove jumpers and connect switches to any port pin using female to female wire harness, LCD pins and H-Bridge signal inputs are open ended male header connector and can be hooked to any port pin with the help of female to female wire harness. This is a very useful shield to develop timer, measurements, dc motor driver with display, DC motor pump controller, automatic irrigation system and many more projects.

16X2 LCD Shield with LMD18201 Motor Driver – [Link]