Hey there guys!
I am working on a project; as title indicates, I want to control two DC motors via a Web Page.The functions are the: Forward, Backward, Left, Right and Stop. I am using Arduino Mega, a WiFi Shield and two DC Motors.
I believe, however, that there are some problems with my code. When I compile the code, and I go to the web page (where the defined buttons are) and I click to the “Forward” button, both of the motors start working and after a few seconds, one of them stops (the same every time). Additionally, when I click “Stop” or any other button, nothing changes.
Bellow is the code that I am using.
#include <SPI.h>
#include <WiFi.h>
#define E1 10 // Enable Pin for motor 1
#define E2 11 // Enable Pin for motor 2
#define I1 8 // Control pin 1 for motor 1
#define I2 9 // Control pin 2 for motor 1
#define I3 12 // Control pin 1 for motor 2
#define I4 13 // Control pin 2 for motor 2
IPAddress ip(192, 168, 0, 11);
char ssid[] = "VM373739-2G"; // your network SSID (name)
char pass[] = "sjtgefbf"; // your network password
int keyIndex = 0; // your network key Index number (needed only for WEP)
int status = WL_IDLE_STATUS;
WiFiServer server(80);
void setup() {
Serial.begin(9600); // initialize serial communication
//pinMode(9, OUTPUT); // set the LED pin mode
pinMode(E1, OUTPUT);
pinMode(E2, OUTPUT);
pinMode(I1, OUTPUT);
pinMode(I2, OUTPUT);
pinMode(I3, OUTPUT);
pinMode(I4, OUTPUT);
// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
while (true); // don't continue
}
String fv = WiFi.firmwareVersion();
if ( fv != "1.1.0" )
Serial.println("Please upgrade the firmware");
WiFi.config(ip);
// attempt to connect to Wifi network:
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to Network named: ");
Serial.println(ssid); // print the network name (SSID);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(ssid, pass);
// wait 10 seconds for connection:
delay(10000);
}
server.begin(); // start the web server on port 80
printWifiStatus(); // you're connected now, so print out the status
}
void loop() {
WiFiClient client = server.available(); // listen for incoming clients
if (client) { // if you get a client,
Serial.println("new client"); // print a message out the serial port
String currentLine = ""; // make a String to hold incoming data from the client
while (client.connected()) { // loop while the client's connected
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
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();
// the content of the HTTP response follows the header:
//client.print("Click <a href=\"/H\">here</a> turn the LED on pin 9 on
");
//client.print("Click <a href=\"/L\">here</a> turn the LED on pin 9 off
");
client.print("Click <a href=\"/F\">Forward</a> to move the robot Forward
");
//client.print("Click <a href=\"/R\">Right</a> to move the robot Right
");
//client.print("Click <a href=\"/L\">Left</a> to move the robot Left
");
//client.print("Click <a href=\"/B\">Backwards</a> to move the robot Backward
");
//client.print("Click <a href=\"/S\">Stop</a> to stop the robot
");
// 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
}
/* Check to see if the client request was "GET /H" or "GET /L":
if (currentLine.endsWith("GET /H")) {
digitalWrite(9, HIGH); // GET /H turns the LED on
}
if (currentLine.endsWith("GET /L")) {
digitalWrite(9, LOW); // GET /L turns the LED off
}*/
if (currentLine.endsWith("GET /F")) {
digitalWrite(E1, HIGH); // GET /F moves forward
digitalWrite(E2, HIGH);
digitalWrite(I1, HIGH);
digitalWrite(I2, LOW);
digitalWrite(I3, HIGH);
digitalWrite(I4, LOW);
delay(1000);
}
/*if (currentLine.endsWith("GET /R")) {
digitalWrite(E1, LOW);
digitalWrite(E2, LOW);
//delay(2000);
digitalWrite(E1, LOW);
digitalWrite(E2, HIGH);
digitalWrite(I1, LOW);
digitalWrite(I2, LOW);
digitalWrite(I3, LOW);
digitalWrite(I4, HIGH);
delay(1000);
}
if (currentLine.endsWith("GET /L")) {
digitalWrite(E1, LOW);
digitalWrite(E2, LOW);
//delay(2000);
digitalWrite(E1, HIGH);
digitalWrite(E2, LOW);
digitalWrite(I1, HIGH);
digitalWrite(I2, LOW);
digitalWrite(I3, LOW);
digitalWrite(I4, LOW);
delay(1000);
}
if (currentLine.endsWith("GET /B")) {
digitalWrite(E1, LOW);
digitalWrite(E2, LOW);
//delay(2000);
digitalWrite(E1, HIGH);
digitalWrite(E2, HIGH);
digitalWrite(I1, LOW);
digitalWrite(I2, HIGH);
digitalWrite(I3, LOW);
digitalWrite(I4, HIGH);
delay(1000);
}*/
/*if (currentLine.endsWith("GET /S")) {
digitalWrite(E1, LOW);
digitalWrite(E2, LOW);
}*/
}
// close the connection:
client.stop();
Serial.println("client disonnected");
}
}
}
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi shield's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.println(" dBm");
// print where to go in a browser:
Serial.print("To see this page in action, open a browser to http://");
Serial.println(ip);
}
And here is the schematic:
/Volumes/NO%20NAME/Schematic.png
Any help would be great!
Thank you,
Christina