How to build an open WiFi finder using ESP8266 and two coin batteries

n the past few months ESP8266 has created a real revolution in the IoT space. I’m using it in a project that will hit Indiegogo in a month or so and you, of course will support me ☺ During the development process I’ve learned a lot and I want to share a part of it. Let’s build cheap open WiFi finder together! Software NodeMcu firmware ESP8266 flasher http://www.xe ...

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