ADXL356/357 MEMS accelerometers feature low noise, low power solution for Wireless Condition Monitoring nodes via @OEMsecrets @arrowglobal

These accelerometers are built to be intrinsically stable over time and temperature with no calibration required.

ADXL356/357 Accelerometers 

The ADXL356/357 MEMS accelerometers feature low noise, low power and offer an excellent solution for Wireless Condition Monitoring nodes.

ADXL372/375 Accelerometer

Ultralow power, 3-axis, ±200g MEMS accelerometer features deep, multimode output FIFO, several activity modes and comes in a small, thin package.

Get your parts sooner with free 1-day shipping when you spend $50 or more with Arrow.com

Researchers From NREL Discovered New Method To Develop Rechargeable Magnesium-metal Battery

A team of researchers from National Renewable Energy Laboratory (NREL) has discovered a new method for developing a rechargeable non-aqueous magnesium-metal battery. A proof-of-concept paper published in Nature Chemistry. It described how the scientists pioneered a method to enable the reversible chemistry of magnesium metal in the noncorrosive carbonate-based electrolytes and tested the concept in a prototype cell. The technology possesses many high potential advantages over conventional lithium-ion batteries. Some upgrades over Li-ion battery with this new kind of battery will be, higher energy density, greater stability, and lower cost.

magnesium-metal batteries
magnesium-metal batteries

NREL researchers Seoung-Bum Son, Steve Harvey, Andrew Norman, and Chunmei Ban are co-authors of the Nature Chemistry white paper, “An Artificial Interphase Enables Reversible Magnesium Chemistry in Carbonate Electrolytes” working with a Time-of-flight secondary ion mass spectrometry. The device enables them to investigate material degradation and failure mechanisms at the micro- to nano-scale.

Chunmei Ban, a scientist in NREL’s Materials Science department and corresponding author of the paper, said,

Being scientists, we’re always thinking: what’s next? The dominant lithium-ion battery technology is approaching the maximum amount of energy that can be stored per volume, so there is an urgent need to explore new battery chemistries that can provide more energy at a lower cost.

Seoung-Bum Son, a former NREL postdoc and scientist at NREL and first author of the paper, thinks this finding will provide a new avenue for magnesium battery design.

An electrochemical reaction powers a battery as ions flow through a liquid (electrolyte) from the negative electrode (cathode) to the positive electrode (anode). For batteries using Lithium, the electrolyte is a salt solution containing lithium ions. It’s also important to make the chemical reaction reversible for the battery to recharge again.

Magnesium (Mg) batteries theoretically contain almost twice as much energy per volume as of lithium-ion batteries. But previous research confronted an obstacle. The chemical reactions of the conventional carbonate electrolyte created a layer on the surface of magnesium that prevented the battery from recharging. The magnesium ions could flow in a reverse direction through a highly corrosive liquid electrolyte, but that blocked the possibility of a successful high-voltage magnesium battery.

The researchers developed an artificial solid-electrolyte interphase from polyacrylonitrile and magnesium-ion salt that protected the surface of the magnesium anode. This protected anode and significantly improved performance of the cell.

In addition to being more readily available than lithium, magnesium has other advantages over the more established battery technology. Firstly, magnesium releases two electrons which is higher lithium’s one, thus giving it the potential to deliver nearly twice as much energy as lithium. And second, magnesium-metal batteries do not experience the growth of crystals that can cause short circuits and consequently dangerous overheating and even fire, making magnesium batteries much safer than lithium-ion batteries.

Micro Soldering Station for 10$

Transform a cheap USB soldering iron in a powerfull Active tip Soldering Station.

With almost no thermal capacity this station regulates the tip’s temperature instantaneously. Solder larger thermal mass with ease, it’s magic.

Micro Soldering Station for 10$ – [Link]

AtPack: Atmel Pack parser, visualizer and fuse calculator

AtPack – Atmel Pack parser, visualizer and fuse calculator from Vagrearg:

Looking for an up-to-date fuse-calculator for the Atmel(*) AVR chips has been something of a long search. There are several online versions, but they have not been updated to the new chips (like the ATmega328PB).
When you have got an itch, you simply scratch it… Don’t you?
Well, I did, and it resulted in an analysis of the Atmel Pack format, which can be freely downloaded under an Apache 2.0 license. The AtPacks contain a master XML file with device lists and links to each device’s XML file, which in turn describes the entire chip. The format is not that hard to understand and can be easily mangled into something useful. Then, some crude jQuery hacking and many hours later… you know how that works.

AtPack: Atmel Pack parser, visualizer and fuse calculator – [Link]

Lipo Charge/Boost/Protect board in 18650 cell holder format

Peter6960 published a new build:

So couple months ago, GreatScott made a video where he designed a circuit. Nothing too innovative, just the same TP4056 charger the MT3608 Boost combined on one PCB. He did add a Lipo protection circuit though, initially using the same DW01. But then, the Aha moment from this video, he found a footprint compatible IC the FS312F-G – which is set at 2.9v! Way healthier for your cell’s longevity!
First of all I had to redraw all his work in Eagle (As I wont be using a cloud based service like EasyEDA for obvious reasons) and then order the PCBs. I added two boost circuits since I had the board space, as I can imagine needing dual voltages at some point (for example if that reverse LCD needed 12v and the Pi needed 5v – i could run both off one board.

Lipo Charge/Boost/Protect board in 18650 cell holder format – [Link]

RK Clean Air – A Gas, Smoke, and Carbon Monoxide Detector

Rk Clean Air is a gas responded device that is capable of monitoring gas leakage, smoke, and carbon monoxide leakage in the home. According to the National Fire Protection Association, “Three of every five home fire deaths resulted from fires in homes with no smoke alarms (38%) or no working smoke alarms (21%) and the death rate per 100 reported home fires was more than twice as high in homes that did not have any working smoke alarms compared to the rate in homes with working smoke alarms.” The importance of having smoke and gas detector cannot be overemphasized.

RK Clean Air

Carbon monoxide (CO) has been called the “silent and invisible killer” because it doesn’t has smell, color, or taste. It’s one of the most prevalent causes of death due to poisoning. Smoke and CO detector are readily available and quite common, Nest Protect, one of the most popular household detectors can detect smoke and carbon monoxide in the home. RK Clean Air is offering more than just smoke and carbon monoxide protection by adding extra security of monitoring gas leakage and fan control.

The capability of combined smoke, carbon monoxide, natural gas, and propane detectors seems intuitive but has not been encountered. A detector coupled to an exhaust system to extract and dissipate dangerous flammable gasses as well as carbon monoxide could prevent many deaths and provide a warning to building occupants. For example, the first notice that many people have of a propane or natural gas leak occurs when smelled in another area of a home only after explosive concentration of gas are reached in other isolated home areas. RK Clean air is able to combine all these together to create a powerful detector.

Furnished with powerful sensors, RK Clean Air continually monitors gas, smoke and CO levels in your home, giving its users a peace of mind. Just like Nest and most detectors, RK Clean Air is able to send a notification to a smartphone. When the RK Clean Air detects danger, it alerts you on your smartphone, while simultaneously flashing its light, sounding an alarm and turning on RK Extractor system that is used in clearing out any harmful gas.

RK Clean Air is also equipped with a clock that will always display the time in idle mode. The clock can be set using the Apaxon Home Automation App that is developed for the RK Clean Air detector.

The following are some of the significant features of RK Clean Air:

  • Detect Gas, Smoke and Carbon Monoxide
  • Smartphone Alerts and Control (Apaxon Smart App)
  • Clock Function (clock can be set on the app)
  • Fan Control (RK Extractor Fan can be switch off using the App)
  • WiFi
  • RF connectivity (used in the communication with the RK Extractor Fan)
  • Comes in three colors – White, Blue and Black
  • Easy to Install

 RK Clean Air is developed by Apaxon Ltd Team, a new Startup company based in Manchester, UK. Apaxon is launching a Kickstarter campaign for its RK Clean Air detector very soon.

PID temperature control with Arduino

PID temperature control with Arduino UNO.

If you want to keep something at a certain temperature, say a block of aluminum, you’ll need a thermocouple and some sort of heating element. While you could turn a heater on and off abruptly in a sequence appropriately known as “bang-bang,” a more refined method can be used called PID, or proportional-integral-derivative control. This takes into account how much the temperature is outside of a threshold, and also how it’s changing over time. [via]

PID temperature control with Arduino – [Link]

Color Detector Using TCS230 Color sensor and Arduino

TCS230 Color Sensor

Hi guys, welcome to today’s tutorial. In this tutorial we will look at how to use the TCS230 color sensor with Arduino. To demonstrate the ability of the color sensor, we will build a color detector system capable of detecting the color in front of the sensor and displaying that color on a TFT Display.  For this project, we will use the TCS230 color sensor and the color will be displayed on the ST7735 1.8″ TFT Display.

The TCS230 is a programmable color light-to-frequency converter which combines configurable silicon photodiodes and a current-to-frequency converter on a single monolithic CMOS integrated circuit.

The color sensor module is made up of the color sensor itself and four Infrared LEDs which are used to illuminate any object placed in front of the sensor to ensure the readings are accurate and are not affected by the surrounding illumination. The sensor is made up of an array of photodiodes with color filters for red, blue, green and a clear filter on top.

Color Detector Using TCS230 Color sensor and Arduino – [Link]

ON Semiconductor RSL10 – Bluetooth® 5 System-on-Chip

Bringing the industry’s lowest power Bluetooth® low energy technology to IoT with a highly flexible multi-protocol 2,4 GHz radio RSL10 from ON Semiconductor.

RSL10 is a multi-protocol Bluetooth 5 certified radio System on Chip (SoC) which brings ultra-low-power wireless technology to IoT.

Offering the industry’s lowest power consumption, RSL10 helps provide devices like heart rate monitors with advanced wireless features while optimizing system size and battery life.

Unlike most other multi-protocol radio SoCs, RSL10 is specifically designed for applications using 1.2V and 1.5V batteries, and supports a voltage supply range between 1.1V and 3.3V without a required DC/DC converter. The highly-integrated radio SoC features a dual-core architecture and a 2.4 GHz transceiver, providing the flexibility to support Bluetooth low energy technology and 2.4GHz proprietary or custom protocols.

Features

  • Ultra-Low-Power:
    • Industry’s lowest power consumption in Deep Sleep Mode (62.5 nW) and Rx in Receive Mode (7 mW)
    • Industry’s best EEMBC® ULPMark™ scores (1090 ULPMark CP @ 3 V; 1260 @ 2.1 V)
  • Advanced Multi-Protocol Wireless Functionality:
    • Rx Sensitivity: -94 dBM
    • Transmitting Power: -17 to +6 dBm
    • Supports Bluetooth low energy and 2.4 GHz proprietary/custom protocols
    • Supports Firmware Over The Air (FOTA)
  • Flexible Voltage Supply Range (1.1 and 3.3 V): Supports devices using 1.2 and 1.5 V batteries without a required external DC/DC converter
  • Ultra-Miniature: RSL10 is offered in a 5.50 mm2 WLCSP and a 6 x 6 mm QFN. For added miniaturization, the radio SoC can be integrated into System-in-Package (SiP) solutions which combine RSL10 with a custom ASIC.
  • Sophisticated Dual-Core Architecture: Features a programmable ARM Cortex-M3 processor for clocking speeds up to 48 MHz and the flexibility to support 2.4 GHz proprietary and custom protocol stacks. An embedded Digital Signal Processor (DSP) enables signal processing intensive applications, such as wireless audio codecs.
  • On-Chip and Software Wireless Support: Features a 2.4 GHz Radio Frequency Front-End (RFFE) and a Bluetooth 5 certified baseband controller which supports 2 Mbps data rates. A wide range of supported Bluetooth low energy protocols are provided in the RSL10 development tools kit.
  • Highly-Integrated System-on-Chip (SoC): The powerful dual-core architecture is complemented by high-efficiency power management units, oscillators, flash, and RAM memories, a DMA controller, and peripherals and interfaces.
  • Other Key Technical Features:
    • 384 kB of flash memory
    • IP protection feature to secure flash contents
    • Configurable analog and digital sensor interfaces (GPIOs, LSADs, I2C, SPI, PCM)

Compact COM Express-based subsystem packs plenty of DAQs

Zeta is a Single Board Computer (SBC) from Diamond Systems that combines a COM Express Mini Type 10 module based on Apollo Lake or Bay Trail SoCs with a DAQ-rich carrier, and a heat spreader mounted below. The Zeta COM Express Mini Type 10 supports the quad-core Atom E3940 and Pentium N4200 from Intel’s Apollo Lake generation, as well as a dual-core Atom E3825 from the earlier Bay Trail family. Measures 84mm by 55mm, Diamond, Creators of Zeta do not promote their creation as a standalone Computer -on-Module product mostly because of its extra add-ons and functionality.

Diamond Systems Zeta

According to Diamond, the 84 x 55mm Zeta offers functionality and performance equivalent to Diamond’s Bay Trail-based Aries PC/104 SBC, at just 40 percent of its 116 x 102mm size.

The Zeta processor choice can be obtained in two Stock Keeping Units (SKUs), one has 16x DIO lines while the other has an FPGA-driven data acquisition circuit that replaces the 16x DIO with a 27x DIO connector. The second SKU also adds 4x channels of 16-bit digital outputs, eight 32-bit timers, 16x channels of 16-bit analog inputs among other features.

The Zeta offers 2GB, 4GB, or 8GB RAM depending on the type of processor chosen. There’s also a microSD slot, as well as a mini-PCI express slot with mSATA support. Standard features include 2x GbE, VGA, LVDS, USB 3.0, 4x USB 2.0, and 4x RS-232/422/485. It also comes with an optional daughter board to act as an expansion set. The daughter board has a full-size mini-PCI express slot, an M.2 M-key 2242 for an SSD, and audio I/O.

General Specifications for the Zeta Serial Board Controller are:

  • Processor — Intel Apollo Lake or Bay Trail:
    • Atom x5-E3940 — 4x Apollo Lake cores @ 1.6GHz/1.8GHz; 9W TDP
    • Pentium N4200 — 4x Apollo Lake cores @ 1.1GHz/2.5GHz; 6W TDP
    • Atom E3825 — 2x Bay Trail cores @ 1.33GHz; 6W TDP
  • Memory & Storage:
    • 2GB (E3825), 4GB (E3940) or 8GB (N4200) RAM
    • MicroSD slot (bootable for Linux)
    • mSATA via mini-PCIe slot
    • M.2 M-key 2242 for SSD on an optional daughterboard
  • Display — VGA; LVDS
  • Networking — 2x Gigabit Ethernet
  • Expansion Options:
    • Mini-PCIe slot with PCIe, USB, and mSATA support.
  • Expansion daughterboard:
    • Full-size mini-PCIe slot with PCIe and USB
    • HD audio (Realtek ALC892) line-in, mic-in, line-out
    • 16x DIO (via I2C) with configurable 3.3V/ 5V logic levels and Pull-up/down resistors
  • Other I/O:
    • USB 3.0
    • 4x USB 2.0
    • 4x RS-232/422/485 (software-programmable with termination)
    • 16x DIO with selectable 3.3V/5V logic levels
    • Optional DAQ circuit (separate SKU):
    • 27x DIO with selectable 3.3V/5V logic levels (replaces original 16x DIO)
    • 16x 16-bit analog inputs
    • +/-10V, +/-5V, 0-10V, and 0-5V input ranges
    • 100KHz max sample rate with 2048-sample FIFO
    • 8x differential voltage inputs
    • 4x channels of 16-bit analog outputs
    • 8x 32-bit counter/timers.
    • 4x 24-bit PWMs
  • Power — Optional 9-36V input
  • Operating temperature — -40°C to 85°C
  • Dimensions — 84mm x 55mm (COM Express Mini Type 10)
  • Operating system — supports Linux (Ubuntu 16.04) and Windows 10 IoT with optional SDKs
  • Other features — watchdog; heat spreader; dev kit version with cables and SDKs
Block Diagram

Zeta’s small size and high feature density make it an ideal choice for mobile applications. It stands ready to meet the challenges of these environments with a wide range 6-36VDC input voltage, a -40 to +85°C operating temperature range, and fanless heat spreader cooling (heat sink options are available). Zeta is available for order online at an undisclosed price. More information for the Diamond Systems Zeta can be found on the product page.