Microcontrollers like ESP8266-based boards have built-in Wi-Fi, and that's really cool, but what's even cooler is that certain pro models of the D1 Mini also have a port where you can connect a directional antenna. This can give you exceptional range, but if you were to just plug one in after opening the package, it most likely wouldn't work. The problem, as Glytch covered in a Hak5 video last year, is that there's a tiny zero-ohm resistor on the board that's connecting the built-in antenna t...
