Pico and ESP8266

@Eric to get a server, you just replace the require("http").get(... line with require("http").createServer. There's an example here and a bit more info on the internet page.

The actual code should look a bit like this though:

var WIFI_NAME = "wifi_name";
var WIFI_PASS = "wifi_key";

function pageHandler(req, res) {
    res.writeHead(200);
    res.end("Hello World");
}

Serial2.setup(9600, { rx: A3, tx : A2 });
var wifi = require("ESP8266WiFi").connect(Serial2, function(err) {
  if (err) throw err;
  wifi.reset(function(err) {
    if (err) throw err;
    console.log("Connecting to WiFi");
    wifi.connect(WIFI_NAME, WIFI_PASS, function(err) {
      if (err) throw err;
      console.log("Connected");
      // print IP address
      wifi.getIP(console.log);
      // Create a server
      require("http").createServer(pageHandler).listen(80);
    });
  });
});

@Stevie, yes the ESP8266 is a little unreliable as a server at the moment (I'm surprised about the 300 requests for a client though - I've left one going for days without problems). I'm hoping I can do something in the driver to make the server more reliable - but it may be that I have to come up with a way to update the firmware on the ESP8266...