Powering an Arduino Board from the Environment

　　建設一個Arduino系統收獲能量從環境提供了大量的自由布線，但需要密切關注系統設計。使用來自環境和無線鏈路的電源可以將電路板從任何布線中解放出來，并為放置設備提供極大的靈活性。

　　Arduino是一個開源電子原型平臺，是專門針對業余愛好者的建筑系統，從傳感器接收輸入。這尤其適用于能量收集設計，這樣傳感器就可以放置在合適的位置，而不用擔心電源和信號線。

　　它是基于靈活的，易于使用的硬件和軟件，為設計師，業余愛好者，和任何人在創造互動的環境感興趣。然而，結果是，該設備沒有進行低功耗優化，使用能量收集方法需要克服一些挑戰。

　　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.