# ESP32C3 Super Mini Wifi Error

**URL:** <https://forum.arduino.cc/t/esp32c3-super-mini-wifi-error/1399724>\
**Category:** Programming\
**Created:** [August 3, 2025, 10:35am UTC](https://forum.arduino.cc/t/esp32c3-super-mini-wifi-error/1399724 "2025-08-03T10:35:27Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![miractttttttttt](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/miractttttttttt/32/1127019_2.png) [@miractttttttttt](https://forum.arduino.cc/u/miractttttttttt)\
**Post date:** [August 3, 2025, 10:35am UTC](https://forum.arduino.cc/t/esp32c3-super-mini-wifi-error/1399724/1 "2025-08-03T10:35:27Z")

</div>

"  
// Load Wi-Fi library  
#include \<WiFi.h\>  
// Replace with your network credentials  
const char\* ssid = "_**";  
const char password = "**_\*";  
// Set web server port number to 80  
WiFiServer server(80);  
// Variable to store the HTTP request  
String header;  
// Auxiliary variables to store the current output state  
String output12State = "off";  
String output14State = "off";  
// Assign output variables to GPIO pins  
const int output12 = 12;  
const int output14 = 14;  
// Current time  
unsigned long currentTime = millis();  
// Previous time  
unsigned long previousTime = 0;  
// Define timeout time in milliseconds (example: 2000ms = 2s)  
const long timeoutTime = 2000;  
void setup() {  
Serial.begin(115200);  
// Initialize the output variables as outputs  
pinMode(output12, OUTPUT);  
pinMode(output14, OUTPUT);  
// Set outputs to LOW  
digitalWrite(output12, LOW);  
digitalWrite(output14, LOW);  
// Connect to Wi-Fi network with SSID and password  
Serial.print("Connecting to ");  
Serial.println(ssid);  
WiFi.begin(ssid, password);  
while (WiFi.status() != WL\_CONNECTED) {  
delay(500);  
Serial.print(".");  
}  
// Print local IP address and start web server  
Serial.println("");  
Serial.println("WiFi connected.");  
Serial.println("IP address: ");  
Serial.println(WiFi.localIP());  
server.begin();  
}  
void loop(){  
WiFiClient client = server.available(); // Listen for incoming clients  
if (client) { // If a new client connects,  
currentTime = millis();  
previousTime = currentTime;  
Serial.println("New Client."); // print a message out in the serial port  
String currentLine = ""; // make a String to hold incoming data from the client  
while (client.connected() && currentTime - previousTime \<= timeoutTime) { // loop while the client's connected  
currentTime = millis();  
if (client.available()) { // if there's bytes to read from the client,  
char c = client.read(); // read a byte, then  
Serial.write(c); // print it out the serial monitor  
header += c;  
if (c == '\n') { // if the byte is a newline character  
// if the current line is blank, you got two newline characters in a row.  
// that's the end of the client HTTP request, so send a response:  
if (currentLine.length() == 0) {  
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)  
// and a content-type so the client knows what's coming, then a blank line:  
client.println("HTTP/1.1 200 OK");  
client.println("Content-type:text/html");  
client.println("Connection: close");  
client.println();  
// turns the GPIOs on and off  
if (header.indexOf("GET /12/on") \>= 0) {  
Serial.println("GPIO 12 on");  
output12State = "on";  
digitalWrite(output12, HIGH);  
} else if (header.indexOf("GET /12/off") \>= 0) {  
Serial.println("GPIO 12 off");  
output12State = "off";  
digitalWrite(output12, LOW);  
} else if (header.indexOf("GET /14/on") \>= 0) {  
Serial.println("GPIO 14 on");  
output14State = "on";  
digitalWrite(output14, HIGH);  
} else if (header.indexOf("GET /14/off") \>= 0) {  
Serial.println("GPIO 14 off");  
output14State = "off";  
digitalWrite(output14, LOW);  
}  
// Display the HTML web page  
client.println("");  
client.println("\<meta name="viewport" content="width=device-width, initial-scale=1"\>");  
client.println("\<link rel="icon" href="data:,"\>");  
// CSS to style the on/off buttons  
// Feel free to change the background-color and font-size attributes to fit your preferences  
client.println("html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");  
client.println(".button { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");  
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");  
client.println(".button2 {background-color: #555555;}");  
// Web Page Heading  
client.println("

# ESP32 Web Server
");  
// Display current state, and ON/OFF buttons for GPIO 12  
client.println("

GPIO 12 - State " + output12State + "

");  
// If the output12State is off, it displays the ON button  
if (output12State=="off") {  
client.println("

\<a href="/12/on"\>\<button class="button"\>ON

");  
} else {  
client.println("

\<a href="/12/off"\>\<button class="button button2"\>OFF

");  
}  
// Display current state, and ON/OFF buttons for GPIO 14  
client.println("

GPIO 14 - State " + output14State + "

");  
// If the output14State is off, it displays the ON button  
if (output14State=="off") {  
client.println("

\<a href="/14/on"\>\<button class="button"\>ON

");  
} else {  
client.println("

\<a href="/14/off"\>\<button class="button button2"\>OFF

");  
}  
client.println("");  
// The HTTP response ends with another blank line  
client.println();  
// Break out of the while loop  
break;  
} else { // if you got a newline, then clear currentLine  
currentLine = "";  
}  
} else if (c != '\r') { // if you got anything else but a carriage return character,  
currentLine += c; // add it to the end of the currentLine  
}  
}  
}  
// Clear the header variable  
header = "";  
// Close the connection  
client.stop();  
Serial.println("Client disconnected.");  
Serial.println("");  
}  
}  
"  
IM taking some error messages.My card is esp32c3 super mini

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<div class="post-metadata">

**Author:** ![UKHeliBob](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/ukhelibob/32/215663_2.png) [@UKHeliBob](https://forum.arduino.cc/u/UKHeliBob)\
**Post date:** [August 3, 2025, 10:38am UTC](https://forum.arduino.cc/t/esp32c3-super-mini-wifi-error/1399724/2 "2025-08-03T10:38:18Z")

</div>

Welcome to the forum

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'  
  
Use **code tags** (the \< CODE/ \> icon above the compose window)&nbsp;to make it easier to read and copy for examination

> [@How to get the best out of this forum](https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum/679966):
>
> See also [FAQ - Arduino Forum](https://forum.arduino.cc/faq) for general rules on forum behavior and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is frus…

Please post your full sketch, using code tags when you do

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In my experience the easiest way to tidy up the code and add the code tags is as follows

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<div class="post-metadata">

**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\
**Post date:** [January 30, 2026, 10:38am UTC](https://forum.arduino.cc/t/esp32c3-super-mini-wifi-error/1399724/3 "2026-01-30T10:38:45Z")

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