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Building Wireless Sensor Networks Using Arduino

You're reading from   Building Wireless Sensor Networks Using Arduino Leverage the powerful Arduino and XBee platforms to monitor and control your surroundings

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Product type Paperback
Published in Oct 2015
Publisher
ISBN-13 9781784395582
Length 192 pages
Edition 1st Edition
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Matthijs Kooijman Matthijs Kooijman
Author Profile Icon Matthijs Kooijman
Matthijs Kooijman
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Chapter 5. Standalone XBee Operation

So far, your XBee modules have been under the direct control of your computer or an Arduino. However, the XBee modules are also capable of running on standalone, which can be useful if you do not need the capability of a programmable microcontroller but just need to remotely read or toggle a few pins.

By using special API frames and radio packets, every XBee module allows reading most of its pins remotely or controlling their output level. Both the digital and analog inputs and digital output is available on all the modules. Some modules also allow you to use PWM (Pulse-Width-Modulation) for the output, though typically only on selected pins.

Using these features, you can build a device using just an XBee module, thereby saving the additional cost and size of an Arduino and a corresponding shield. Note that you can also control the pins on an XBee module connected to an Arduino, though most shields leave all these pins unconnected.

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