Wiring the ESP8266 as Stand alone

Remotely controlling any devices with your mobile phone or your laptop are all made easy with ESP8266 module develop by Espressif Systems.

The ESP8266 offers a complete and self contained Wi-Fi network solution, allowing it to either host the application or to offload all Wifi networking functions from another application processor.

When ESP8266 host application boot up directly from the external flash. It has integrated cache to improve the performance of the system in such applications, and to minimize the memory requirements.

Alternately, serving as a Wifi adapter, wireless internet access can be added to any microcontroller-based design with simple connectivity through UART interface or the CPU AHB bridge interface.

ESP8266 on-board storage and processing capabilities allow it to be integrated with the sensors and other devices or other application specific devices through GPIOs with minimal development up-front and minimal loading runtime. With its high degree on-chip integration, which includes the antenna switch and power management converters, it is requires minimal external circuitry, and the entire solution, including front-end module is designed to occupy minimal PCB area.

ESP8266 has also sophisticated system-level features include fast sleep and awake context switching for energy efficient VoIP adaptable, radio biasing for low-power operation, advance signal processing, and spur cancellation and radio co-existence features for common cellular, Bluetooth, DDR, LVDR, LCD interference mitigation.

Features:

802.11 b/g/n protocol
Wifi direct (P2P), soft Access Point
Integrated TCP/IP protocol stack
Integrated TR switch, balun (Signal Balancer), LNA, Power Amp and Matching Network
Integrated PLL, regulators, and power management units.
+19.5dBm output power in 802.11b mode.
Integrated temperature sensor
Support antenna diversity
Power down leakage current of < 10uA
Integrated low power 32bit CPU could be used as application processor
SDIO 2.0, SPI, UART
STBC, 1 x 1 MIMO, 2X1 MIMO
A-MPDU & A-MSDU aggregation & 0.4ua guard interval
Wake up and transmit packets in < 2ms
Standby power consumption of < 1.0mW (DTIM3)

In this project we will going to wire the ESP8266 that works as stand alone.

Required Electronic Parts.
1x ESP8266 Wifi Module
1x 500 Ohms Resistor
3v Power Supply or 2 AA Batteries
Jumper Wire

Programming The ESP8266 01 with TTL UART CP2102 USB

See the diagram below for wiring the ESP8266 with CP2102 TTL UART

Flashing the memory ESP8266 using nodeMCU Flasher

Click here to See the instructions how to flash the ESP8266

Programing the ESP8266 01 with NodeMCU Flasher

Upload the code using LUA Loader | Download: LuaLoader.zip 0.87 (2015.03.21) by: benlo

Source Code

gpio.mode(4, gpio.OUTPUT)
gpio.write(4, gpio.LOW)
wifi.setmode(wifi.STATIONAP)
wifi.setmode(wifi.STATION)
wifi.sta.config("SSID","PASSWORD")
wifi.sta.setip({ip="192.168.200.100",netmask="255.255.255.0",gateway="192.168.200.1"})
srv=net.createServer(net.TCP)
srv:listen(80,function(conn)
    conn:on("receive", function(client,request)
        local buf = "";
        local _, _, method, path, vars = string.find(request, "([A-Z]+) (.+)?(.+) HTTP");
        if(method == nil)then
            _, _, method, path = string.find(request, "([A-Z]+) (.+) HTTP");
        end
        local _GET = {}
        if (vars ~= nil)then
            for k, v in string.gmatch(vars, "(%w+)=(%w+)&*") do
                _GET[k] = v
            end
        end

        buf = buf.."<h1> www.14core.com <br/> Your first IOT LED Using Stand-alone ESP8266 WIFI via Web Browser.</h1><form src=\"/\">Turn<select name=\"pin\" onchange=\"form.submit()\">";
        local _on,_off = "",""
        if(_GET.pin == "ON")then
              _on = " selected=true";
              gpio.write(4, gpio.HIGH);
        elseif(_GET.pin == "OFF")then
              _off = " selected=\"true\"";
              gpio.write(4, gpio.LOW);
        end
        buf = buf.."<option".._on..">ON</opton><option".._off..">OFF</option></select></form>";
        client:send(buf);
        client:close();
        collectgarbage();
    end)
end)

gpio.mode(4, gpio.OUTPUT)

gpio.write(4, gpio.LOW)

wifi.setmode(wifi.STATIONAP)

wifi.setmode(wifi.STATION)

wifi.sta.config("SSID","PASSWORD")

wifi.sta.setip({ip="192.168.200.100",netmask="255.255.255.0",gateway="192.168.200.1"})

srv=net.createServer(net.TCP)

srv:listen(80,function(conn)

conn:on("receive", function(client,request)

local buf = "";

local _, _, method, path, vars = string.find(request, "([A-Z]+) (.+)?(.+) HTTP");

if(method == nil)then

_, _, method, path = string.find(request, "([A-Z]+) (.+) HTTP");

end

local _GET = {}

if (vars ~= nil)then

for k, v in string.gmatch(vars, "(%w+)=(%w+)&*") do

_GET[k] = v

end

buf = buf.."<h1> www.14core.com <br/> Your first IOT LED Using Stand-alone ESP8266 WIFI via Web Browser.</h1><form src=\"/\">Turn<select name=\"pin\" onchange=\"form.submit()\">";

local _on,_off = "",""

if(_GET.pin == "ON")then

_on = " selected=true";

gpio.write(4, gpio.HIGH);

elseif(_GET.pin == "OFF")then

_off = " selected=\"true\"";

gpio.write(4, gpio.LOW);

end

buf = buf.."<option".._on..">ON</opton><option".._off..">OFF</option></select></form>";

client:send(buf);

client:close();

collectgarbage();

end)

Wiring the ESP8266 as Stand alone

2 thoughts on “Wiring the ESP8266 as Stand alone”

Rodrigo
at
Permalink

Hello, what web browser and as use ? thank you.
Reply
- 14core EditorPost author
  at
  Permalink
  
  You can use any browser, Firefox, Chrome, IE, Safari, etc. note: just place 192.168.XX.XX as describe at the source code.
  Reply

Related Article:

2 thoughts on “Wiring the ESP8266 as Stand alone”

Leave a Reply Cancel reply

Important Cookie Information :