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FAQ.md

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Frequently Asked Questions

  • Q: Do I need any special drivers?
    A: You may need the CP210x Driver if it's not already installed on your system. Windows Update can also install these drivers if you are connected to the internet and your computer policy allows it.
  • Q: The text in my Serial Port Monitor is all boxes/squares, what should I do?
    A: Make sure to select the correct baud rate in the bottom-right corner of the Serial Port Monitor. For this lab, we are using 115200.
  • Q: I'm getting a XYZ error in my Serial Port Monitor, what should I do?
    A: Try closing reopening the Serial Port by selecting Tools → Port and then reselecting your desired port.
  • Q: Are there other debugging steps I can take related to a failed WiFi connection?
    A: Set "Debug Port: Serial" and "Debug Level: Core" in the Arduino IDE Tools menu. Add Serial.setDebugOutput(true); after Serial.begin(9600);. This will print additional information from the WiFi stack which may provide hints as to what is going wrong.
  • Q: How can I check if the WiFi connection is established before connecting?
    A: Use the following snippet: 
    if (WiFi.status() != WL_CONNECTED) {
  WiFi.begin(ssid, password);
}
  • Q: I'm still having issues connecting to WiFi even after trying the above troubleshooting steps
    A: Try the following: 
    WiFi.persistent(false);
WiFi.mode(WIFI_OFF);   // this is a temporary line, to be removed after SDK update to 1.5.4
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
  • Q: This isn't working for me on ESP-01, ESP-003, or other alternative board - what can I do?
    A: Try adding the following snippet immediately before the WiFi.begin(ssid, password); line: 
    WiFi.setOutputPower(0);
  • Q: Can I set a fallback where the device will broadcast it's own Access Point?
    A: Check out the following snippet: AP Fallback GitHub comment