Help with WeMos D1 Mini Webserver Relay

Projects Programming
1

Hi :slight_smile:

Could someone help me out on this one?

When I send "http://xxx.xxx.xxx.xxx/aklsjdhwuwqeoiuys/openport2" or "http://xxx.xxx.xxx.xxx/aklsjdhwuwqeoiuys/openport1" through the browser the wemos is freezing after 5-10 sec, what am i doing wrong?

The power supply im using i 5V 1500ma with an 10v 1000uf capacitor.

#include <ESP8266WiFi.h>

// defines pins numbers
const char* ssid = "This is my Wi-Fi!";
const char* password = "1123456789";
 
int port1 = D5;
int port2 = D6;

WiFiServer server(80);
 
void setup() {
  Serial.begin(115200);
  delay(10);
 
  pinMode(port1, OUTPUT);
  pinMode(port2, OUTPUT);
  digitalWrite(port1, HIGH);
  digitalWrite(port2, HIGH);
 
  // Connect to WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
 
  WiFi.begin(ssid, password);
 
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
 
  // Start the server
  server.begin();
  Serial.println("Server started");
 
  // Print the IP address
  Serial.print("Use this URL : ");
  Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");
 
}
 
void loop() {
  // Check if a client has connected
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
 
  // Wait until the client sends some data
  Serial.println("new client");
  while(!client.available()){
    delay(1);
  }
 
  // Read the first line of the request
  String request = client.readStringUntil('\r');
  Serial.println(request);
  client.flush();
 
  // Match the request
 
  if (request.indexOf("/aklsjdhwuwqeoiuys/openport1") != -1) {
    digitalWrite(port1, LOW);
    delay(500);
    digitalWrite(port1, HIGH);
  } 
  else if (request.indexOf("/aklsjdhwuwqeoiuys/openport2") != -1){
    digitalWrite(port2, LOW);
    delay(500);
    digitalWrite(port2, HIGH);
  }
 
  // Return the response
  client.println("HTTP/1.1 200 OK");
  client.println("Content-Type: text/html");
  client.println(""); //  do not forget this one
  client.println("<!DOCTYPE HTML>");
  client.println("<html>");
  client.println("

");
  client.println("<meta http-equiv=\"refresh\" content=\"0;url=http://zjonesz.net:8000/asdasdjhgqwertyuqwe/\">");
  client.println("</html>");
 
  delay(1);
  Serial.println("Client disconnected");
  Serial.println("");
 
}
2 
int port1 = D5;
int port2 = D6;

Those are pins, not ports. A port is a collection of pins.

what am i doing wrong?

Pissing away resources on the String class:

  String request = client.readStringUntil('\r');

A char array, of fixed size, and a while loop will accomplish the same thing using far fewer resources.

You could also save a lot of SRAM by learning about the F() macro.

3

You can try fixing the nested quotations in the html text response. They are dumb quotes. Everything inside the outermost double quotes "___" need to use single quotes ' ' instead.