This is a common ESP8266 Arduino shield with the following markings:
WiFi 2.4 GHz
802.11 b/g/n
Designed in
Beijing
P.R.China
Moer info $ tech
support Please go
to elecshop.ml
Arduino ESP8266 WiFi
Shield Version 1.0
by WangTongze
The voltage switching circuitry on this shield doesn't work properly as it
arrives, so you'll have to modify it slightly if you intend it to work as
a shield (with SW1
and SW2
set to ON
).
The DIP switches are:
Switch | Function |
---|---|
SW1 | Connect ESP8266 TX to pin D0 |
SW2 | Connect ESP8266 RX to pin D1 |
SW3 | Enable bootloader mode |
SW4 | Use DFU LED to show serial activity (?) |
Power is drawn from the 5v
pin (not Vin
) so if connecting to Pixl.js
ensure that Vin
and 5V
are shorted on the solder jumper
unless you plan to power the shield separately.
SW1
and SW2
are OFF
TXD
pin on Debug Port
to D0
on the Arduino headerRXD
pin on Debug Port
to D1
on the Arduino header
SW1
and SW2
are ON
TXD
and RXD
should now be available on D0
and D1
at 3.3v levelsIf connecting to Pixl.js you should be aware that when if Pixl.js detects a
connection on D0
at boot, it'll start using Serial1
as a console device rather than the LCD.
To avoid this you'll need to explicitly set the console back to the LCD at boot time:
function onInit() {
Terminal.setConsole();
}
Note: your module may not come with ESP8266 AT firmware installed. To fix this,
see the the ESP8266 page. If you're using Pixl.js
you can now update the firmware on the ESP8266 module via the Flasher
section of the Web IDE.
To connect to a WiFi access point.
var WIFI_NAME = "WiFi_Name";
var WIFI_PASS = "WPA2_Key";
var wifi;
function getPage() {
require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
console.log("Response: ",res);
res.on('data', function(d) {
console.log("--->"+d);
});
});
}
function go() {
Serial1.setup(115200,{rx:D0,tx:D1});
wifi = require("ESP8266WiFi_0v25").connect(Serial1, 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");
// Now you can do something, like an HTTP request
getPage();
});
});
}
To set up as an access point called ESP123
with password HelloWorld
that serves up a webpage on address 192.168.4.1
:
var wifi;
function pageHandler(req, res) {
res.writeHead(200);
res.end("Hello World");
}
function go() {
Serial1.setup(115200,{rx:D0,tx:D1});
wifi = require("ESP8266WiFi_0v25").connect(Serial1, function(err) {
if (err) throw err;
console.log("Connecting to WiFi");
wifi.createAP("ESP123","HelloWorld",5,"wpa2_psk", function(err) {
if (err) throw err;
console.log("Connected!");
require("http").createServer(pageHandler).listen(80);
});
});
}
See the ESP8266 page for more information on how to use the ESP8266, and the Internet page for more examples of things you can do on Espruino with an Internet connection.
This page is auto-generated from GitHub. If you see any mistakes or have suggestions, please let us know.