How to connect external antenna to ESP32-C3 SuperMini board?

Projects Networking, Protocols, and Devices
1

Hello everybody
I just see this post:

I have the same problem. In my case it is any ESP32 which I ocassionally use but at this moment I use a ESP32C3 supermini. When I just scan wifi signals around I get a response from many wifi routers, even in the neibourhood but when it comes to establish a connection only my own router at a distance of about 5m max can connect. my ESP32 is this one:

Pinout-Front
Pinout-Front751×328 42.5 KB

My question is: This red device with C3 printed on is the antena and would it make sense to unsolder it and conect a kind of cable as a extended antena ?

2

I would not recommend it as it is a tuned circuit. Also the board should be type accepted in your country and modifications to the RF can cause it to change frequency and or ERP (Effective Radiated Power) and are forbidden. You need to check the laws in your country.

3

There are known wi-fi connection problems with some models of this board.

This topic may be of your interest:

https://forum.arduino.cc/t/no-wifi-connect-with-esp32-c3-super-mini/

4

using a ESP32-C3 supermini the example File>Examples>WiFi>SimpleWiFiServer connects to my WiFi OK
serial monitor displays

Connecting to horace2017
.................
WiFi connected.
IP address: 
192.168.1.66
New Client.
GET / HTTP/1.1
Host: 192.168.1.66
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:136.0) Gecko/20100101 Firefox/136.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Sec-GPC: 1
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Priority: u=0, i

Client Disconnected.

a web client on a PC displays

image
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are you sure the router supports 2.4GHz and the Encryption is correct

5

Then the problem seems that you do not have the correct password for your neighbor's router.

1 Like
6

seems you did not get my point. Of course I don´t want to connect to the neighbours router. But why can I see distanced routers and not connect to a closer my own one.
Yes I know my SSID and password.

7

More antenna will not solve that problem.

8

if it is accepted or not even the public authorities don´t know in my (selected) country. I am not close to an airport so I don´t care about this.

9

You might not care about following legal restrictions or even good practice, but if you don't, a lot of the volunteers who provide the support on this forum may be un-willing to help you.

2 Likes
10

I do.

1 Like
11

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