Новини світу мікро- та наноелектроніки

MQ3 Sensor With Arduino UNO(Breath Analyzer)

Open Electronics - Пн, 02/22/2021 - 19:21

In this project, i am going to show you how i made a breadth analyzer using MQ3 sensor with an Arduino UNO to display the readings on LCD and raise an alarm if alcohol content is more than required in the breath of the user. More info

The post MQ3 Sensor With Arduino UNO(Breath Analyzer) appeared first on Open Electronics. The author is Carlo Palumbo

Harvest indoor lighting for IoT devices

EDN Network - Пн, 02/22/2021 - 18:19

Ambient light is a prime source of harvestable energy for low-power electronics devices. Most photovoltaic cells, however, are designed to work with direct sunlight and are ineffective indoors. Now, an organic light cell is available that can glean power from lighting as low as 20 Lux (lumens per square meter), opening the door for indoor energy harvesting in the IoT.

As the EDN article Energy harvesting expands IoT options points out, there are many applications for which even battery power is impractical. The cost and logistics of changing batteries can quickly become too burdensome for a widespread product installation. Outfitting a large apartment complex with traditional keyless electronic door locks, for instance, would require periodic replacement of hundreds of batteries, an unappealing prospect for building operators. Harvesting the energy of hallway lighting, however, could eliminate that requirement by continuously storing power against the lock’s occasional use.

The trouble with traditional photovoltaic cells in such an application is their poor response to low light levels. Such cells are designed to be effective in direct sunlight, hence the name “solar cell,” which has a light density of 30,000 to 100,000 Lux. Typical indoor home lighting, though, ranges from 50 to 150 Lux. At these levels traditional solar cells produce almost no usable power.

This inability of solar cells to be effective at low light levels has limited their utility for indoor energy harvesting applications. A new light cell from Swedish company Epishine promises to solve that problem. The company has created an organic photovoltaic cell optimized to work efficiently at illumination levels from 20 to 1000 Lux from artificial lighting such as LEDs and fluorescents.

The Epishine light cell is fabricated by printing the active elements onto plastic films that get pressed together. The result is a thin (0.2 mm), flexible product that produces about 18 µW/cm2 at an illumination of 500 Lux. The finished cell has a 10-mm minimum bend radius, so it can be curved (Figure 1) and fabricated to a custom shape to fit installation requirements.

illustration of an Epishine light cell for indoor energy harvestingFigure 1 This indoor light cell is printed on a plastic film, giving it a flexibility that opens installation options. Source: Epishine

In addition to its flexibility, the Epishine light cell has another handy attribute – it is essentially transparent to radio waves. The active organic electronic layer is only around 100-nm thick, so there is almost no RF absorption. This gives IoT designers the space-saving option of positioning their antenna behind the light cell rather than alongside.

Stock versions of the light cell are available in three sizes – 50-mm wide and 20-, 30-, and 50-mm in height. They come in two configuration options, six and eight series-connected cells. Each cell has an open-circuit voltage (VOC) a little over half a volt, so six cells in series yields VOC of 3.8V and eight cells yields 5.05V, making them compatible with common battery-pack voltages. As shown in Figure 2, a 50×50 mm, six-cell configuration would yield at least 40 μA at 3V in normal home lighting.

graph showing power generation for the Epishine light cells for indoor energy harvestingFigure 2 Power generation matching the needs of many small microcontrollers is available from normal room lighting with the Epishine light cell. Source: Epishine

While microamperes seem like a pretty meager energy supply, they can be more than enough to power today’s tiny, energy-efficient microcontrollers – at least while the lights are on. For applications needing to operate in darkness or to supply intermittent power at higher levels, the light cell can be paired with an energy storage device, such as a rechargeable battery. Properly sized to accommodate battery and light cell degradation over time, the energy harvesting power system can outlast the design’s installed operating life.

Rich Quinnell is a retired engineer and writer, and former Editor-in-Chief at EDN.

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The post Harvest indoor lighting for IoT devices appeared first on EDN.

Kubos demos first commercially compatible cubic GaN LEDs

Semiconductor today - Пн, 02/22/2021 - 18:02
Spun out of the University of Cambridge in 2017 – with an exclusive license to its proprietary cubic gallium nitride (GaN) intellectual property to deliver efficient green and amber LEDs – Kubos Semiconductors Ltd of Cambridge, UK says that it has demonstrated the first commercially compatible LEDs based on the cubic crystal phase of GaN, representing a step towards more efficient solid-state lighting...

433 MHz receiver 8 channels with self-learning

Open Electronics - Пн, 02/22/2021 - 17:13

  Self-learning UHF receiver consisting of a radio receiver board with Motorola decoding and a module equipped with 8 relays operating in impulse or bistable mode. In many home automation applications and in general where it is necessary to exercise remote control by radio of multiple devices installed in the same place, the classic single […]

The post 433 MHz receiver 8 channels with self-learning appeared first on Open Electronics. The author is Boris Landoni

Research Headlines - Belastbare Cybersicherheitsl&246;sungen f&252;r europ&228;ische Unternehmen

EC:RIC: - Пн, 02/22/2021 - 02:00
[Source: Research & Innovation] IT-Innovationen eröffneten neue Geschäftsperspektiven, die Unternehmen jedoch neuen Bedrohungen aussetzten. Besonders kleinere Unternehmen sind oft schlecht auf die Abwehr von Cyberangriffen vorbereitet. Ein EU-finanziertes Projekt hat neue Instrumente für einen besseren Schutz von Unternehmen und Privatpersonen entwickelt und diese auf einer einfach zu bedienenden Plattform zur Verfügung gestellt.

Research Headlines - Des solutions de cybers&233;curit&233; r&233;silientes pour les entreprises europ&233;ennes

EC:RIC: - Пн, 02/22/2021 - 02:00
[Source: Research & Innovation] Les innovations informatiques ont ouvert des perspectives commerciales, mais ont aussi exposé les entreprises à de nouvelles menaces, surtout les PME, souvent mal préparées aux cyberattaques. Un projet financé par l’UE a développé de nouveaux outils pour aider les entreprises, et par extension les citoyens, à mieux se protéger, et les a diffusés sur une plateforme conviviale.

Research Headlines - Odporne cyber zabezpieczenia dla europejskich firm

EC:RIC: - Пн, 02/22/2021 - 02:00
[Source: Research & Innovation] Dzięki technologiom informacyjnym firmy zyskały nowe możliwości biznesowe, ale wraz z nimi pojawiły się nieznane wcześniej zagrożenia. Na cyberataki podatne są przede wszystkim mniejsze przedsiębiorstwa. W ramach finansowanego ze środków UE projektu opracowano nowe narzędzia, które zapewnią firmom, a tym samym obywatelom, lepszą ochronę. Rozwiązania te udostępniono na prostej w użyciu platformie.

Research Headlines - Resilient cybersecurity solutions for European businesses

EC:RIC: - Пн, 02/22/2021 - 02:00
[Source: Research & Innovation] While information technologies have opened up new business opportunities, they have also left companies exposed to new threats. Smaller companies in particular are often ill-prepared to defend against cyberattacks. An EU-funded project has developed new tools to help businesses, and by extension citizens, protect themselves better and have made these available on an easy-to-use platform.

Research Headlines - Soluciones de ciberseguridad resilientes para las empresas europeas

EC:RIC: - Пн, 02/22/2021 - 02:00
[Source: Research & Innovation] Aunque las tecnologías de la información han abierto oportunidades comerciales, también han expuesto a las empresas a nuevas amenazas. Las pymes suelen estar mal preparadas para defenderse de ciberataques, pero un proyecto financiado con fondos europeos ha creado herramientas para que estas empresas —y los ciudadanos— se protejan mejor y las ha puesto a su disposición en una plataforma sencilla.

Research Headlines - Soluzioni resilienti di sicurezza informatica per le aziende europee

EC:RIC: - Пн, 02/22/2021 - 02:00
[Source: Research & Innovation] Sebbene le tecnologie dell’informazione abbiano aperto nuove opportunità commerciali, hanno anche esposto le aziende a nuove minacce. Le aziende più piccole sono spesso impreparate contro gli attacchi informatici. Un progetto finanziato dall’UE ha sviluppato e messo a disposizione su una piattaforma intuitiva nuovi strumenti per aiutare le aziende, e dunque i cittadini, a proteggersi meglio.

Research Headlines - [EL] Resilient cybersecurity solutions for European businesses

EC:RIC: - Пн, 02/22/2021 - 02:00
[Source: Research & Innovation] [EL] While information technologies have opened up new business opportunities, they have also left companies exposed to new threats. Smaller companies in particular are often ill-prepared to defend against cyberattacks. An EU-funded project has developed new tools to help businesses, and by extension citizens, protect themselves better and have made these available on an easy-to-use platform.

Research Headlines - [EL] Resilient cybersecurity solutions for European businesses

EC:RIC:News - Пн, 02/22/2021 - 02:00
Image[EL] While information technologies have opened up new business opportunities, they have also left companies exposed to new threats. Smaller companies in particular are often ill-prepared to defend against cyberattacks. An EU-funded project has developed new tools to help businesses, and by extension citizens, protect themselves better and have made these available on an easy-to-use platform.

Research Headlines - Odporne cyber zabezpieczenia dla europejskich firm

EC:RIC:News - Пн, 02/22/2021 - 02:00
ImageDzięki technologiom informacyjnym firmy zyskały nowe możliwości biznesowe, ale wraz z nimi pojawiły się nieznane wcześniej zagrożenia. Na cyberataki podatne są przede wszystkim mniejsze przedsiębiorstwa. W ramach finansowanego ze środków UE projektu opracowano nowe narzędzia, które zapewnią firmom, a tym samym obywatelom, lepszą ochronę. Rozwiązania te udostępniono na prostej w użyciu platformie.

Research Headlines - Soluzioni resilienti di sicurezza informatica per le aziende europee

EC:RIC:News - Пн, 02/22/2021 - 02:00
ImageSebbene le tecnologie dell’informazione abbiano aperto nuove opportunità commerciali, hanno anche esposto le aziende a nuove minacce. Le aziende più piccole sono spesso impreparate contro gli attacchi informatici. Un progetto finanziato dall’UE ha sviluppato e messo a disposizione su una piattaforma intuitiva nuovi strumenti per aiutare le aziende, e dunque i cittadini, a proteggersi meglio.

Research Headlines - Des solutions de cybersécurité résilientes pour les entreprises européennes

EC:RIC:News - Пн, 02/22/2021 - 02:00
ImageLes innovations informatiques ont ouvert des perspectives commerciales, mais ont aussi exposé les entreprises à de nouvelles menaces, surtout les PME, souvent mal préparées aux cyberattaques. Un projet financé par l’UE a développé de nouveaux outils pour aider les entreprises, et par extension les citoyens, à mieux se protéger, et les a diffusés sur une plateforme conviviale.

Research Headlines - Soluciones de ciberseguridad resilientes para las empresas europeas

EC:RIC:News - Пн, 02/22/2021 - 02:00
ImageAunque las tecnologías de la información han abierto oportunidades comerciales, también han expuesto a las empresas a nuevas amenazas. Las pymes suelen estar mal preparadas para defenderse de ciberataques, pero un proyecto financiado con fondos europeos ha creado herramientas para que estas empresas —y los ciudadanos— se protejan mejor y las ha puesto a su disposición en una plataforma sencilla.

Research Headlines - Resilient cybersecurity solutions for European businesses

EC:RIC:News - Пн, 02/22/2021 - 02:00
ImageWhile information technologies have opened up new business opportunities, they have also left companies exposed to new threats. Smaller companies in particular are often ill-prepared to defend against cyberattacks. An EU-funded project has developed new tools to help businesses, and by extension citizens, protect themselves better and have made these available on an easy-to-use platform.

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