A powerful Arduino-compatible microcontroller in a very small form factor with a handy built-in USB port for programming. They work fine with the standard Arduino IDE once the board file has been loaded. , and are compatible with most existing Arduino code - the only problems you might run into are some libraries that want to access hardware directly, as most Arduinos are AVR based and this is a different MCU. It's not that hard to modify the code to make it work. Thanks to the fairly complex built-in firmware and libraries, the on-board WiFi is easy to set up. You can create a simple web server to monitor/manage connected devices in about 10 lines of code. The ESP8266 module is used in a large number of off-the-shelf IoT products such as smart light bulbs, sockets, doorbells and some cameras. This little package is your path to becoming an IoT hacker/developer.
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