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建设一个Arduino无线网关
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建设一个Arduino无线网关
Arduino是一个开源电子原型平台，专门优化用于接收来自传感器的输入。这使得它成为开发无线网关的极好平台。通过以太网连接，网关可用于将传感器和执行器连接到因特网上，用于智能手机和平板电脑上。可以为这些平台开发应用程序，然后利用来自网络的数据，远程控制来自世界任何地方的执行器。
广泛的开放源码软件提供了建设项目的宝贵资源。它是基于灵活的，易于使用的硬件和软件为设计师，业余爱好者，和任何人在创造互动的环境感兴趣。
有一个广泛的Arduino板可用，使用Arduino编程语言。这是基于布线，具有作为C++的语法和库，简化和改进。要使语言简单易用，有Arduino开发环境，它是基于开源的java IDE的基础处理。发展可以在PC或Mac和Windows下，主机Mac OSX或Linux，或在董事会本身。网关软件可以使用Arduino的编程语言和开发工具的Linux。
The Arduino Nano board is a small， complete， and breadboard-friendly board based on the ATmega328 processor for the Arduino Nano 3.0 or the ATmega168 for the Arduino Nano 2.x family. It lacks only a DC power jack， and works with a Mini-B USB cable instead of a standard one. The Nano was designed and is currently being produced by Gravitech. The 16 MHz processor runs from a recommended input voltage of 7-12 V and has fourteen digital I/O pins with 40 mA of DC current per pin， which can be used to power a wireless module.
There is 16 KB of Flash in the ATmega168 version or 32 KB in the ATmega328 of which 2 KB used by the bootloader. Similarly， there is 1 KB of SRAM and 512 bytes of EEPROM with the ATmega168 or 2 KB of SRAM and 1 KB of EEPROM for the ATmega328.
The value of the Arduino boards lies in the range of open source software that has been developed by hobbyists， and also the flexibility of the hardware. Manufacturers provide the circuit layouts， and it is easy to build an add-on card， or shield， to the wireless functions. A wireless shield can be made or bought to add a wireless link to the design.
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