External antenna

[rahmaevao]

I bought an antenna 2042811100 MOLEX. https://www.molex.com/molex/products/da ... TENNAS.xml

But it does not stick into the slot on module ESP32-WROOM-32U.


What kind of antennas do you use in your projects?

[loboris]

This antenna has a MHF4 connector and ESP32 modules have IPEX connectors.

What is the difference between u.fl. / IPEX / MHF4?
QUESTION
What is the difference between u.fl. / IPEX / MHF4?

SOLUTION
u.fl and IPEX are all different names for the same contact. So you can use these names interchangeably.

MHF4 is the smaller contact used with m.2/NGFF modules.

https://techship.com/faq/what-is-the-di ... ipex-mhf4/

[WiFive]

Technically MHF4 is part of the same family as "IPEX" which is really MHF or MHF1 made by I-PEX

[rahmaevao]

Thank you all!

But in the specification for the antenna indicated that it is a ufl connector.
Where is the truth?
What kind of antennas do you use?
Drawing ufl connector from ESP32https://www.espressif.com/sites/default ... eet_en.pdf:

Drawing ufl connector for antenna connections (MOLEX recommendation):
https://yadi.sk/i/PaUMuhI3zNwNFQ

They're alike
What kind of antennas do you use?
I bought this antenna here. Is it suitable?
https://ru.farnell.com/arduino/x000016/ ... dp/2830995

[loboris]

I bought this antenna here. Is it suitable?
https://ru.farnell.com/arduino/x000016/ ... dp/2830995

You need a wifi antenna, 2.4GHz, with U.FL (IPEX) connector.
The antenna you've bought is designed for Arduino MKR1200 and it is a Sigfox antenna for 868MHz.
It may work, but not good.

WiFi antennas on eBay

[rahmaevao]

Are there specific models that you use?

[loboris]

Choosing the wifi antenna depends on the intended usage.
If you just need to connect to the wifi router in your home, any wifi antenna will probably work good.

If you have trouble choosing the antenna, I would recommend next time you buy the ESP32 module with the PCB antenna.