DIY GSM Base Station with a BeagleBone Black

Source: http://beagleboard.org/black

To give people a better understanding of what state-operated surveillance equipment actually looks like, critical engineers Julian Oliver and Danja Vasiliev built a GSM interception unit. Now Oliver has published the HOWTO on the web. In an easy-to-follow run down … Continue reading

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Wearable Medical Computing and the Amulet Project

Dr. Vivian Genaro Motti

Health care is one of the most promising areas for employing wearable devices. Wearable mobile health sensors can track activities (e.g., count steps or caloric expenditure), monitor vital signs including heart rate and blood pressure, measure biometric data (e.g., glucose … Continue reading

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Robotics, Hardware Interfacing, and Vintage Electronics

The testing bench

Gerry O’Brien, a Toronto-based robotics and electronics technician at R.O.V. Robotics, enjoys working on a variety of projects in his home lab. His projects are largely driven by his passion for electronics hardware interfacing. Gerry’s background includes working at companies … Continue reading

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One-Wire RS-232 Half Duplex (EE Tip #135)

Grun2-HalfDup

Traditional RS-232 communication needs one transmit line (TXD or TX), one receive line (RXD or RX), and a Ground return line. The setup allows a full-duplex communication. However, many applications use only half-duplex transmissions, as protocols often rely on a … Continue reading

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July Issue Offers Data-Gathering Designs and More

Data Gathering Designs

The concept of the wireless body-area network (WBAN), a network of wireless wearable computing devices, holds great promise in health-care applications. Such a network could integrate implanted or wearable sensors that provide continuous mobile health (mHealth) monitoring of a person’s … Continue reading

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