可以选择任意一款包含UART接口的51评估板，只要设法与WiFi模块接口即可，控制指令都是比较简单的串口AT指令，这个对51来说不复杂.但是对于一个只会51单片机朋友玩转好wifi，还是比较有难度的，比如实现手机控制继电器，手机控制LED灯，手机采集温湿度等等，我朋友建议我使用51单片机wifi开发板http://www.hx-wl.com.cn/51wifi/那个板子还提供了单片机源码和APP源码，让我轻轻松松完成我头疼的毕业设计，希望对你有帮助。。
可以选择任意一款包含UART接口的51评估板，只要设法与WiFi模块接口即可，控制指令都是比较简单的串口AT指令，这个对51来说不复杂，很简单。需要关心下51评估板的串口波特率的设置，这样了解UART通讯最高速率是多少。
The RN-171-EK is an 802.11 b/g Wi-Fi evaluation kit for the RN171 module that can be used to quickly add Wi-Fi connectivity to embedded applications. It has the flexibility to connect directly to a PC via a standard USB interface or to embedded processors through the TTL/UART interface. The board includes 2 convenient push buttons for controlling both SoftAP and WPS (Wi-Fi Protected Setup) mode without software configuration. The status LEDs and jumpers enable rapid prototyping and integration into existing systems.
The RN-171-EK can be powered by both a USB cable (included in the kit) or batteries. The board contains a battery boost circuit which makes it possible to power the board using two AAA batteries (the input voltage can go down to 2.0 V DC when using the battery boost circuit). The battery boost circuit makes the RN-171-EK perfect for battery powered applications such as sensors, data acquisition systems, controllers, etc.
http://www.microchip.com/Developmenttools/ProductDetails.aspx?PartNO=RN-171-EK
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