Few devices have hit the hacker/maker word with quite as large a bang as the ESP8266. [Brian] first reported a new $5 WiFi module back in August. Since then there have been an explosion of awesome … ...

When we first heard about it a few weeks ago, we knew the ESP8266 UART to WiFi module was a special beast. It was cheap, gave every microcontroller the ability to connect to a WiFi network, and cou… ...

After programming, you can plug your ESP module correctly on the ESP socket of the relay board. In the next step, you can operate the system using a 5-9V DC power source (12VDC maximum). Wi-Fi Relay & ...

Using just a WiFi module and a CNC mill, ... In essence, the system is akin to WiFi radar, using a battery-powered ESP8266 chip to ping a device and measure the signal.