Finally - cheap WiFi?

Well, the code on GitHub is going to need a bit more work, but in the mean time put this code in, and do each of the commands in comments one after the other:

Serial4.setup(115200, { rx: C11, tx : C10 });
var line = "";
Serial4.on('data',function(c) {
  line += c;
  if (line.substr(0,5)=="+IPD,") {
    // input data
    var colon = line.indexOf(":",5);
    if (colon>=0) {
      var len = parseInt(line.substr(5,colon-5));
      if (line.length-colon > len) {
        console.log("DATA>"+JSON.stringify(line.­substr(colon+1,len)));
        line = line.substr(colon+len+1);
      }
    }
  } else {
    // simple lines
    var i = line.indexOf("\n");  
    while (i>=0) {
      console.log("-->"+line.substr(0,i));
      line = line.substr(i+1);      
      i = line.indexOf("\n");
    }
  }
});

/*
Serial4.print('AT+RST\r');
Serial4.print('AT+CWMODE=1\r');
Serial4.print('AT+CWJAP="YourAPName","Yo­urAPPass"\r');

Serial4.print('AT+CIPMUX=0'); // single connection

Serial4.print('AT+CIPSTART="TCP","93.93.­135.13",80\r');
var cmd = "GET / HTTP/1.0\r\n\r\n";
Serial4.print('AT+CIPSEND='+cmd.length+'­\r');
Serial4.print(cmd);
Serial4.print('AT+CIPCLOSE\r');

*/

Part of me is wondering if it's not easier to just implement the whole driver in JavaScript :)