Matrix driver IC supports up to 192 LEDs

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Integrated Silicon Solution has released a family of high performance LED drivers, IS31FL3733, IS31FL3736 and IS31FL3737 to support LED matrices consisting of 192, 96 and 144 LEDs respectively. By Julien Happich @ edn-europe.com

ISSI’s LED matrix architecture provides designers with flexibility in controlling individual LEDs or an array of LEDs resulting in simplified color adjustment and lighting zone selection for a large array of LEDs.

Matrix driver IC supports up to 192 LEDs – [Link]

60V-input battery charger; Pb-acid & Li-ion charge algorithms up to 20A

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LTC4013 is a highly integrated, high voltage multi-chemistry synchronous step-down battery charger controller. With a wide input voltage range that spans up to 60V, the LTC4013 uses temperature-compensated 3- and 4-stage charge algorithms to efficiently charge 12V and 24V lead-acid batteries. By Graham Prophet @ edn-europe.com

Alternatively, the LTC4013 will charge a multicell Lithium-based battery stack with float voltages near to the input supply. Mode pins define the float voltage and charge algorithm. Charge current is precision regulated to ±5% and programmable with a single resistor up to 20A (depending on the selection of external components). The LTC4013 features user-adjustable maximum power point tracking (MPPT) circuitry that enables simple power optimization in the case of power-limited sources such as solar panels. The MPPT open-circuit method corrects for panel temperature changes without the inconvenience of adding a solar panel temperature sensor. Applications include portable medical instruments, monitoring equipment, battery backup systems, industrial handhelds, industrial lighting, military equipment, ruggedized notebooks/tablet computers, plus remote powered communication and telemetry systems.

60V-input battery charger; Pb-acid & Li-ion charge algorithms up to 20A – [Link]

Lithium ion batteries that work best at 95°C

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Numerous laboratories are working towards reducing or eliminating the accidental risks of Li ion batteries by working on solid electrolytes. Researchers at ETH at Zurich are developing unique solid materials which even when brought to high temperatures will not ignite. by Denis Meyer @ elektormagazine.com:

This represents a double advancement over current Li ion batteries which contain inflammable gel electrolytes, because not only does the fire risk disappear, but constraints over form-factor are also much less.

Lithium ion batteries that work best at 95°C – [Link]

Comparing the Top 5 PCB CAD Programs

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sfcircuits.com compares the top 5 PCB CAD Programs, DipTrace, Eagle, Altium, Pads and Orcad:

There are several programs available that range from simple and intuitive to highly sophisticated.

They range from free or inexpensive to high-end/premium.

They come feature-less or feature-heavy.

All of the tools are different and unique in their own way. Ultimately, your needs and preferences should drive what CAD program you use. This guide is structured to help you decide which is optimal or explore alternatives.

Comparing the Top 5 PCB CAD Programs – [Link]

EspoTek Labrador – Oscilloscope, Signal generator, Power supply in one tiny board

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EspoTek Labrador is a small, portable, USB-connected electronics lab-on-a-board that includes an oscilloscope, waveform generator, power supply, logic analyzer, and multimeter.

The EspoTek Labrador plugs directly into a solderless breadboard and connects to any Windows, Mac, or Linux computer via microUSB. A custom software interface lets you see and interact with your waveforms on-screen. Careful planning and a lot of work has been put into making the interface intuitive for those new to electronics, while keeping it powerful for those familiar with the instruments. Experienced engineers, don’t fear – you can do things like manually adjust the ADC gain and UART parameters. These kinds of function have just been moved away from the main screen, keeping things clean and simple for newer users.

EspoTek Labrador – Oscilloscope, Signal generator, Power supply in one tiny board – [Link]

BeagleCore: an embedded industrial/IoT computing module, in distribution

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Distributor Conrad Business Services has added an open-source module and starter kit based on the BeagleBone Black, as a rapid development tool. By Graham Prophet @ edn-europe.com:

The result of an agreement between Conrad (Hirschau, Germany) and BeagleCore, the BCM1 embedded computing module and BCS1 starter-kit will be exclusively available to Conrad’s customers world-wide. Heavily based on the BeagleBone development board, these devices provide small, simple and powerful building blocks for creating and testing new technologies for industrial and Internet of Things (IoT) applications. Conrad offers them as suited for professional and industrial embedded solutions.

ICS501 simple frequency multiplier

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Scott from SWHarden has published a new build:

Today I made a high frequency multiplier using a single component: the ICS501 PLL clock multiplier IC. This chip provides 2x, 5x, 8x (and more) clock multiplication using an internal phased-lock loop (PLL). At less than a dollar on eBay, $1.55 on mouser, and $0.67 on Digikey, they don’t break the bank and I’m glad I have a few in my junk box! I have a 10MHz frequency standard which I want to use to measure some 1Hz (1pps) pulses with higher precision, so my general idea is to use a frequency multiplier circuit to increase the frequency (to 80 MHz) and use this to run a counter IC to measure the number of clock pulses between the PPS pulses.

ICS501 simple frequency multiplier – [Link]

Portable temperature, humidity and ambient light datalogger

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Jesus @ jechavarria.com pointed us to his latest project, a portable temp, humidity and ambient light datalogger.

Hi all! I’m continuing here with the last board I design and now I’m continuing testing. It’s a battery-powered small datalogger based on a PIC18F2620 microcontroller. The idea comes a few months ago, talking with a friend. He needs something to  monitoring temperature and humidity inside a sea container, for a three weeks travel from Spain to China. Low consumption is important, in order to have maximum autonomy with a small battery.

Portable temperature, humidity and ambient light datalogger – [Link]

Single-chip end-to-end security for IoT devices connected to the Amazon cloud

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Max Maxfield @ embedded.com discuss about IoT security and single chip solutions to this issue.

The Internet of Things (IoT) has the potential to change the world, but only if it’s secure. Securing the IoT is currently one of the greatest challenges for the creators of IoT devices and the providers of cloud services.

In order to address this problem, the folks at Amazon have teamed with the guys and gals at Microchip to create a seamless solution in the form of the ECC508A crypto-companion chip, which is presented in a variety of packaging options.

Single-chip end-to-end security for IoT devices connected to the Amazon cloud – [Link]

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