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I have an esp8266 module and i want to increase its range by adding an antenna to it. What kind of antena should i use. Can i use an antenna from a RC car remote?enter image description here

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  • 1) You need a 2.4GHz antenna. 2) There is no antenna connection on that module, so you will have to bodge it: instructables.com/id/External-Antenna-for-ESP8266
    – Majenko
    Nov 27 '19 at 13:18
  • An antenna from a RC car remote won't work? Can you send me a link of the antenna that you are talking about? Nov 27 '19 at 13:32
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    A 2,4GHz antenna is a 2.4GHz antenna. Antennae have to be a specific length and tuned to a specific frequency or they are next to useless (or worse, can reduce your range). If you can't be bothered to look for one in a shop using that simple search term, then rip one off an old dead WiFi router.
    – Majenko
    Nov 27 '19 at 13:34
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    @Majenko im gonna rip off my old router's antenna. Thanks for the help Nov 27 '19 at 13:41
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You must use a WiFi (2.4 GHz) antenna. From the picture in your post, you have one of the esp8266 modules with a "built-in" antenna implemented via traces on the PCB. You cannot add an external antenna without removing the old one first, and even that will be very dodgy - you'll likely render your esp8266 useless for any purpose.

Instead, you could get an esp8266 that is made for connecting an external WiFi antenna. See the Wikipedia article for details. It specifically mentions model # ESP-WROOM-02U as having a connector for an external antenna.

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