Maxim announced that it is now sampling the MAX31850/MAX31851, cold-junction-compensated, 1-Wire thermocouple-to-digital converters. The devices achieve ±2.0°C accuracy (not including sensor nonlinearity) while integrating all of the functions required for a complete thermocouple-to-digital solution. Additionally, the device’s 1-Wire interface allows multiple sensor locations to communicate and draw power over a single data line, greatly simplifying wiring requirements. [via]
1-Wire Thermocouple-to-Digital Converters Simplify Multisensor Designs - [Link]
amandaghassaei @ instructables.com writes:
Waveform generators (also called function generators) are useful for testing and debugging circuits. They can be used to test the frequency response of electronic components like op amps and sensors or to characterize and troubleshoot audio effects boxes and pedals. This waveform generator shield is powered by an Arduino. It outputs four waveforms: sine, triangle, pulse, and saw, each waveform ranges in frequency from 1Hz-50 kHz. The frequency, pulse width, and overall amplitude (gain) of the waveforms is controlled by three potentiometers.
Arduino Waveform Generator Shield - [Link]
This is an Example of how you can use the Arduino to monitor various environmental parameters And display them on a LCD screen.
Mini Arduino environment monitor - [Link]
Mats of GerrySweeney’s inexpensive Decade programmable resistor:
I bought this 7-decade resistor box from Gerry Sweeeney for $18. It’s a really nice little cheap tool – much cheaper than the models with switches or thumbwheels that usually are 5-10 times as expensive as Gerrys version.
Decade resistor box with jumpers - [Link]
Bajdi built an Arduino MP3 alarm clock and wrote a detailed explanation on his blog describing the build:
The idea is simple, an LCD that shows the date and time. A couple of buttons to set an alarm, and an MP3 module and small speaker to play an MP3 when the alarm goes of.
Arduino MP3 alarm clock - [Link]
Ivan Creations made this ReCoMonB (Real Computer Monitoring Block) and wrote a detailed explanation on his blog describing the build:
I managed to de-virtualize the CPU/MEM/HDD/NET stats and now I have them physically represented on my desk. The device that does that is named ReCoMonB – Real Computer Monitoring Block. I have also made the device driverless and working on Liunx and Windows.
ReCoMonB – Real Computer Monitoring Block - [Link]
Occupying a footprint of just 2.57×3.24 mm, the STA333IS single-chip digital audio system from STMicroelectronics furnishes up to 20 W of audio output power for use in space-constrained LCD and LED televisions, docking stations, and digital wireless speaker systems. With is wide operating voltage range of 4.5 V to 18 V, the device is also suitable for battery-operated equipment.
Part of ST’s SoundTerminal family, the STA333IS combines digital audio IP, such as FFX full flexible amplification, along with signal processing and power circuitry in a chip-scale package to create a high-power, single-chip solution for all-digital amplification. Its power section consists of four independent half-bridge stages. Two channels can be provided by two full bridges capable of delivering up to 10 W + 10 W of power.
Tiny digital audio SoC delivers up to 20 W - [Link]
by Steve Taranovich
The following is a white paper by Silicon Labs with an innovative new process and technology that I believe deserves some level of detail and explanation for informative and educational purposes for EDN readers. Learning about this technology will help all designers give birth to new ideas and architectures as well as help those other designers to effectively integrate this type of product into their systems,
CMEMS® technology is an innovative CMOS + MEMS manufacturing process developed by Silicon Labs, a leading supplier of timing solutions. The term CMEMS is a contraction of the acronyms CMOS and MEMS (microelectromechanical systems). CMEMS technology offers many benefits over traditional oscillator approaches, ranging from scalability, customer-specific programmability and 0-day samples, to long-term reliability and performance. This white paper describes CMEMS process technology, existing hybrid oscillator architectures and the Si501/2/3/4 (Si50x) CMEMS oscillator architecture.
CMEMS oscillator architecture - [Link]
Suzanne Deffree writes:
Apple this week is celebrating the five year anniversary of its Apps Store. If you go to the store, you’ll notice Apple is giving away five games and five apps to celebrate the anniversary.
When it opened its virtual doors, the Apps Store did so with a mere 500 apps. Now, it showcases more than 900,000, with more than 800 apps being downloaded each second.
In total more than 50 billion downloads have taken place since the Apple App Store’s 2008 launch, with more than $10 billion being paid out to developers.
Mixed in among the whopping number of available apps are a few that engineers, specifically, might enjoy. We’ve created the following list of our own favorites as well as some contributed by engineers in the field.
20 Apple apps for engineers - [Link]
alexglow @ instructables.com writes:
Note: By “beginner’s guide”, I mean a guide written by a beginner. (I made it at TechShop SF, during my first weeks!) I have some technique tips to share, but for more in-depth questions, Google is your friend.
Solder paste allows you to populate a board with many tiny components, without straining your eyes and fingers. Using minuscule components saves space, and you can dramatically cut down the space between them when you don’t have to solder every connection by hand.
Beginner’s Guide to Solder Paste - [Link]