Strange ESP32 C3 SuperMini

json2024
Posts: 1
Joined: Sat Sep 28, 2024 9:57 pm

Strange ESP32 C3 SuperMini

Postby json2024 » Sat Sep 28, 2024 10:03 pm

The ESP32 C3 SuperMini CAN NOT connect to WIFI normally when using a pin female header.

Once a pin female header is used, the ESP32 C3 SuperMini fails to connect to WIFI.

Even just connecting a pin header socket to pin 21 causes WIFI connection failure.

As long as pin 21 is not connected to the pin header socket, everything works fine.
If a pin header socket is not used and instead jumper wires are used, everything works normally.
Also, I have confirmed that there are no issues with the pin header socket, such as short circuits.
I have tested two ESP32 C3 SuperMini boards and both have experienced the issue.

What could be the reason for this?
2024092901.png
2024092901.png (3.78 MiB) Viewed 843 times
Here are some related debug output messages:

[206533][D][WiFiGeneric.cpp:1035] _eventCallback(): Arduino Event: 5 - STA_DISCONNECTED
[206542][W][WiFiGeneric.cpp:1057] _eventCallback(): Reason: 2 - AUTH_EXPIRE
[206549][D][WiFiGeneric.cpp:1081] _eventCallback(): WiFi AutoReconnect Running
[206565][V][WiFiGeneric.cpp:97] set_esp_interface_ip(): Configuring Station static IP: 0.0.0.0, MASK: 0.0.0.0, GW: 0.0.0.0
[208304][V][WiFiGeneric.cpp:362] _arduino_event_cb(): STA Disconnected: SSID: CHEN, BSSID: 24:cc:24:a1:c1:05, Reason: 2
[208304][D][WiFiGeneric.cpp:1035] _eventCallback(): Arduino Event: 5 - STA_DISCONNECTED
[208313][W][WiFiGeneric.cpp:1057] _eventCallback(): Reason: 2 - AUTH_EXPIRE
[208320][D][WiFiGeneric.cpp:1081] _eventCallback(): WiFi AutoReconnect Running
Last edited by json2024 on Sun Sep 29, 2024 11:05 am, edited 1 time in total.

User avatar
Basalt
Posts: 28
Joined: Wed Aug 16, 2023 7:59 pm

Re: Strange ESP32 C3 SuperMini

Postby Basalt » Sun Sep 29, 2024 8:57 am

Looking at the photo, I have doubts whether the ceramic WiFi antenna (red rectangular) is soldered properly.
I would resolder it manually to see if it helps.

ESP_Sprite
Posts: 9757
Joined: Thu Nov 26, 2015 4:08 am

Re: Strange ESP32 C3 SuperMini

Postby ESP_Sprite » Mon Sep 30, 2024 7:14 am

Might be a bad module; it's known that some manufacturer of boards marked as C3-supermini messed up their routing leading to crap WiFi performance.

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