MAN/WAN sensor communications can occur over WiMax/hotspots or 3G systems. After a brief discussion of a brand-new (but speculative) technology, cognitive radios (CRs), in the remainder of the section we focus on the evolution of cellular networks in terms of the desire to provide a lateral data channel that supports any number of applications, including [...]
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PING)))™ Ultrasonic Distance Sensor
The Parallax PING))) ultrasonic distance sensor provides precise, non-contact distance measurements from about 2 cm (0.8 inches) to 3 meters (3.3 yards). It is very easy to connect to BASIC Stamp® or Javelin Stamp microcontrollers, requiring only one I/O pin. The PING))) sensor works by transmitting an ultrasonic (well above human hearing range) burst and [...]
Review3
SRF04 Ultrasonic sensor
SRF04 is a non-contact sensors use ultrasonic distance measuring. The working principle of this sensor is a transmitter sends a beam of ultrasonic waves, and then measured the time required until the arrival of the reflection from the object. The duration time is comparable to twice the distance sensor with an object, so that the [...]
Review4
Wiznet : Wiz110SR serial to ethernet converter
WIZ110SR is a gateway module that converts RS-232 protocol into TCP/IP protocol. It enables remote gauging, managing and control of a device through the network based on Ethernet and TCP/IP by connecting to the existing equipment with RS-232 serial interface. In other words, WIZ110SR is a protocol converter that transmits the data sent by serial [...]
