Hi,
I am using ESP-NOW to communicate two ESP circuits. My aim is to get more gain trying to attach external antenna to AiThinker ESP-C3-13 Node MCU kit. Module is coming not soldered male interface on board. Therefore I soldered an IPEX connector to board. After the soldering connector I attached the external antenna to the board but nothing changed. Still same dbi and no extra gain.
Has ESP-C3-13 a trick like ESP32-CAM (https://randomnerdtutorials.com/esp32-c ... al-antenna) to enable external antenna instead of on-board one?
As an additional information; I tested short-circut positive and negative pins of IPEX connector without attaching an antenna. Then found out they are touching each other at some where. It is same on brand new board to. Is it normal?
Please find my part attached to the message.
Thank you for your helps.
Orkun Gedik
ESP32-C3-13 external antenna
ESP32-C3-13 external antenna
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Re: ESP32-C3-13 external antenna
Sounds like a manufacturing defect or an error with the soldering.
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Re: ESP32-C3-13 external antenna
You seem to have the ESP-C3-13 module, which comes with a PCB antenna. To connect an external antenna, you will have to somehow 'disconnect' the PCB antenna, and probably modify the matching network to be compatible with your external antenna.
Or, get an ESP-C3-13U.
Or, get an ESP-C3-13U.
May be. Some PIFA designs for example are grounded at one end.I tested short-circut positive and negative pins of IPEX connector without attaching an antenna. Then found out they are touching each other at some where. It is same on brand new board to. Is it normal?
Re: ESP32-C3-13 external antenna
Since I didn't not want to broke my PCB board I didn't touch it so far I will try to disconnect PCB antenna and write here the result.MicroController wrote: ↑Thu Mar 14, 2024 11:18 pmYou seem to have the ESP-C3-13 module, which comes with a PCB antenna. To connect an external antenna, you will have to somehow 'disconnect' the PCB antenna, and probably modify the matching network to be compatible with your external antenna.
Or, get an ESP-C3-13U.
May be. Some PIFA designs for example are grounded at one end.I tested short-circut positive and negative pins of IPEX connector without attaching an antenna. Then found out they are touching each other at some where. It is same on brand new board to. Is it normal?
Thank you.
Orkun Gedik
Re: ESP32-C3-13 external antenna
Hallo, I believe you should remove the marked resistor.
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