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Computer module Variscite Var-SOM-Solo

16.11.2014

Variscite has introduced a miniature computer module (System-on-Module, SOM). The module, equipped with a variety of I/O facilities, is well suited for embedded systems. The form factor is indistinguishable from a standard 200-pin SO-DIMM.

The key component of the miniature (33 x 68 x 4 mm) system is a Freescale i.MX6 Cortex-A9 processor running at 1 GHz, integrated with a Vivante GPU. In addition, the board has up to 1GB of DDR3 RAM, 512MB of SLC NAND flash, and a 64GB eMMC module.

The module is equipped with a Wi-Fi 802.11 a/b/g/n wireless interface that operates in the 2,4 and 5 GHz bands and is optionally offered in a 2x2 MIMO configuration. In addition, there is a Bluetooth 4.0 LE wireless interface, a 10/100/1000 Mbps Ethernet port, two LVDS outputs, one HDMI 1.4 and one MIPI DSI. The equipment also includes a USB 2.0 host with OTG support, a PCIe interface, a line-in and audio subsystem output.

It is possible to connect a camera, for which there is a MIPI CSI and a parallel interface. There are also CAN (x2), UART, I2C, SPI.

The computer can run Linux Yocto and Ubuntu, Android, Windows Embedded Compact 7 and 2013. It is designed to operate in the temperature range from -40°C to +85°C.

Sales of Var-SOM-Solo have already begun. Prices start at $42.

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Food sensors based on paper and graphene 03.11.2022

Korean scientists have developed new food freshness and temperature sensors. They are based on laser-induced graphene on environmentally friendly, biodegradable paper.

According to data from last year, about 78 percent of the plastic entering the environment is food packaging. Thus, the development of biodegradable bags, boxes and glasses for our food is the primary concern of people who are not indifferent to the problem of plastic pollution of the planet.

Although several large companies have already released their lines of biodegradable packaging, including utensils and drinking straws, there is still the problem of monitoring the quality of food in such packages, that is, tracking the temperature and freshness of food. Most of today's food condition sensors are not biosoluble, so even when attached to eco-friendly packaging, they eventually become part of the plastic that pollutes the planet.

However, now specialists from Seoul National University (South Korea) have found a way to solve this problem by developing a completely biodegradable food quality control sensor based on laser-induced graphene. This sensor is able to monitor the temperature and freshness of food (it captures gases emanating from it), so that using a mobile application, anyone can assess the quality of meat products or the temperature of a cup of coffee.

To obtain sensors, the research team has developed a technology for the synthesis of graphene through a local thermal reaction by laser irradiation of an environmentally friendly carbon-based paper substrate. As a result, the sensor was fabricated directly on a food-grade cellulose substrate, without additional processing that would compromise the packaging's environmental friendliness.

The researchers hope that the sensors they have developed will further reduce the plastic pollution of the planet and make it easier for people who buy food in paper packages to control food quality. In the future, such sensors can be used not only in the food industry, but also in any other industry where environmentally friendly temperature and gas sensors are required.

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