Description
The SparkFun ESP8266 WiFi Shield is an Arduino compatible shield for the ESP8266 WiFi SoC – a leading platform for Internet of Things (IoT) or WiFi-related projects. There are a variety of designs based around the ESP8266, including tiny, modular boards and more accessible development boards like our very own SparkFun ESP8266 Thing. The ESP8266 WiFi Shield finds a middle ground between the Module and the Thing that provides a great introduction to the ESP8266 – without leaving the comfortable hardware confines of your Arduino.
The ESP8266 WiFi Shield comes pre-flashed with an AT-command firmware, so it can be controlled by any UART, but it also breaks out and provides command access to all of the ESP8266’s I/O. Since this is an Arduino shield, it makes it easy to attach to any development board that utilizes the Arduino R3 layout. All it will take is a little soldering to attach the necessary headers. The ESP8266 is much more than a simple serial-to-WiFi gateway. It has almost a dozen I/O that can be configured as digital inputs or outputs – it even has an ADC.
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Arduino R3 Layout
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802.11 b/g/n
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Wi-Fi Direct (P2P), soft-AP
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Integrated TCP/IP protocol stack
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Integrated TR switch, balun, LNA, power amplifier and matching network
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Integrated PLLs, regulators, DCXO and power management units
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Integrated low power 32-bit CPU could be used as application processor
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+19.5dBm output power in 802.11b mode
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GitHub (Design Files)
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GitHub (AT Arduino Library)
- ESP8266 Powered Propane Poofer
- Internet of Things Experiment Guide