RS232 standard set by the Electronic Industries Association and Telecommunications Industry Association in 1962. His full name is EIA/TIA-232 Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange. Although its official name “creepy”, but this concerns only the standard data communication between a computer (Data Terminal Equipment – DTE) with [...]
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Bluetooth communication Technology
Bluetooth is a specification for short-range RF-based connectivity for portable personal devices. It is a short-range wireless data exchange protocol designed for a small variety of tasks, such as synchronization, voice headsets, cell modem calls, and mouse and keyboard input. The specification began as a de facto industry standard; more recently, IEEE Project 802.15.1 developed [...]
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WIRELESS SENSOR TECHNOLOGY
As we saw in earlier chapters, a WSN consists of a group of dispersed sensors (motes) that have the responsibility of covering a geographic area (the sensor field) in terms of some measured parameter (also known as the measurand); alternatively, a sensor supports a point-to-point link in which the ‘‘reader’’ end is attached to a [...]
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USING RS485 serial communication
RS485 RS485 is used for serial communication and well suited for transmission over large distances. Similar to RS232 we need a level shifter. sample above uses a MEGA161 or MEGA162 which has 2 UARTS. This way you can have both a RS232 and RS485 interface. The RS232 is used for debugging. In order to test [...]
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Using the I2C protocol
I2C bus I2C bus is an abbreviation for Inter Integrated Circuit bus. It is also known as IIC and I2C. I2C is a serial and synchronous bus protocol. In standard applications hardware and timing are often the same. The way data is treated on the I2C bus is to be defined by the manufacturer of [...]
