QT Py ESP32-C3 does not connect to wifi

[yurtkuran]

Repost of this topic.

I purchased 10 QT Py ESP32-C3 WiFi Dev boards. 9 of 10 will not connect to WiFi.

Code pasted below - Wi.Status() returns WL_DISCONNECTED on every attempt. After searching this appears to be a widespread problem with this version of the ESP32-C3. This is a good discussion on the issue including input from AdaFruit GitHub: https://github.com/espressif/arduino-esp32/issues/6430

Questions:

• Is there an issue with the ESP32-C3 impacting WiFi?
• Is there a firmware solution for this WiFi issue? Is so, what?
• Does the -S2 or -S3 have the same issue?
• Should I replace my C3 boards with S3?

Any help is greatly appreciated.

Code: Select all

boolean connenctToWiFi(int wifiMaxAttemps) {
    int wifiAttempts = 0;
    int wifiCounter = 0;

    WiFi.mode(WIFI_STA);
    WiFi.disconnect();
    delay(100);

    WiFi.begin(ssid, password);
    
    while (WiFi.status() != WL_CONNECTED) {
        Serial.printf("%i.", WiFi.status());
        delay(100);

        if (++wifiCounter == 10 ) {
            Serial.println();
            wifiCounter = 0;
            wifiAttempts++;
        }

        if (wifiAttempts > wifiMaxAttemps) {
            Serial.println("\nMax connect attempts. Restarting.\n");
            delay(100);
            ESP.restart();
        }
    }
    return true;
}

[mikeysklar]

There are some mentioned work arounds in the github issue you linked to.

* WiFi.mode(WIFI_STA) after WiFi.useStaticBuffers(true) and before WiFi.begin(...) seems to be repeatedly working for the WiFiClientSecure sketch.

* CONFIG_ESP32C3_REV_MIN_0=y in tasmota

Adafruit have been swapping the C3 boards for S2 or S3 models if the issue cannot be worked around with your setup.

[yurtkuran]

Hello @mikeysklar,

Thanks a million for your response. Unfortunately I'm not able to get WiFi working. Here is what I tried without success:

• updated code as recommended
• reset AP
• varied location of C3 board to AP
• swapped out AP
• used Android phone as hotspot
• used iPhone as hotspot

How do I begin the RMA process for the QT PY ESP32-C3 boards?

Again, thanks a million for your help.

-Erol

[mikeysklar]

You may email [email protected] to start the process for a refund or replacement. The ESP32-S2 or ESP32-S3 do not have the same connectivity issue the ESP32-C3 has.

They will need your order# and a link to this forum thread as authorization.