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Powering an Arduino Board from the Environment
建设一个Arduino系统收获能量从环境提供了大量的自由布线，但需要密切关注系统设计。使用来自环境和无线链路的电源可以将电路板从任何布线中解放出来，并为放置设备提供极大的灵活性。
Arduino是一个开源电子原型平台，是专门针对业余爱好者的建筑系统，从传感器接收输入。这尤其适用于能量收集设计，这样传感器就可以放置在合适的位置，而不用担心电源和信号线。
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。然而，结果是，该设备没有进行低功耗优化，使用能量收集方法需要克服一些挑战。
The Arduino Nano board is a small， complete， 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 being produced by Gravitech. The 16 MHz processor runs from a recommended input voltage of 7-12V and has fourteen digital I/O pins with 40 mA of DC current per pin. 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 in the flexibility of the hardware. Manufacturers provide the circuit layouts， and it is easy to build an add-on card， or shield， to add sensor or communicaTIon funcTIons.
