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 http://www.instructables.com/id/Use-ESP8266-to-Internet-enabled-AC-Appliances/ Food Living Outside Play Technology Workshop Use ESP8266 to Internet enabled AC Appliances by shinteo on December 28, 2014 Table of Contents Use ESP8266 to Internet enabled AC Appliances  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Intro: Use ESP8266 to Intern et enabled AC Appliances  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Step 1: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Step 2: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Step 3: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Step 4: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 5: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Step 6: Savour the moment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Related Instructables  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Advertisements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Comments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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Use ESP8266 to Internet Enabled AC Appliances

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  • http://www.instructables.com/id/Use-ESP8266-to-Internet-enabled-AC-Appliances/

    Food Living Outside Play Technology Workshop

    Use ESP8266 to Internet enabled AC Appliancesby shinteo on December 28, 2014

    Table of Contents

    Use ESP8266 to Internet enabled AC Appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

    Intro: Use ESP8266 to Internet enabled AC Appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

    Step 1: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

    Step 2: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

    Step 3: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

    Step 4: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

    Step 5: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

    Step 6: Savour the moment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    Related Instructables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    Advertisements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

  • http://www.instructables.com/id/Use-ESP8266-to-Internet-enabled-AC-Appliances/

    Author:shinteo always two there areYour focus determines your reality

    Intro: Use ESP8266 to Internet enabled AC AppliancesInternet controlled AC Appliances with ESP8266

    ESP8266 is a very low cost WiFi transceiver that can be added to any existing microcontroller based setups via UART (serial link) to enable the system to communicateover the Internet via WiFI. In this guide, the objective is to achieve the epitome of IoT inspired setup; that is to control an AC (Alternate Current) electrical appliance overthe Internet using ESP8266. The outcome of this setup: a command to be sent from a website through the WiFi network to ESP8266 with Arduino Mega to turn on an AClamp for 2 seconds. The AC lamp is a place holder for any electrical device to be "Internet Enabled".

    The following diagram describes the necessary parts and setup for this apparatus. On the left is an Multiplug modified with SSR, In the middle is Arduino Mega. On thebreadboard is ESP8266 and sparkfun logic level shifter. Arduino Mega Pin7 is for SSR, Serial2 pin16,17 for UART with ESP8266, and Serial0 for USB serial monitor.

    An IoT controlled AC appliance can be quite daunting to construct. Setting up such apparatus requires cross domains knowledge such as computer networking,electrical, electronics, programming, administering software on the Operating Systems (linux) of a server (or just another computer), and the often unspoken (and hairpulling moments) troubleshooting techniques. Combining several key building blocks to this setup can be overwhelming. Not to worry, because the divide and conquerapproach can be adopted to R&D (Replicate & Duplicate) this setup. Which has been conveniently divided, constructed, and described in the following sections. It ishighly recommended to construct the building blocks/modules and tested for functionality, prior to assembling this apparatus.

    The necessary building blocks/modules of this setup is broken down into the following

    1. Computer Networking: Setting up a WiFi Access Point/Router. Setup wifi security, either OPEN, WEP or WPA. DHCP for the connecting clients (the computer andESP8266). PING-ing the devices on the network. DMZ for TCP server (if necessary, use for Internet side to access)2. Electrical & Electronics: Setting up the IoT inspired SSR Multiplug, and setting up ESP8266 with Arduino Mega; connecting the SSR Multiplug to ESP8266 withArduino Mega

    3. Programming (software): Firmware for ESP8266 on Arduino Mega to control the SSR Multiplug upon receiving a command. Server side software for sending a packet(that contains the command) from a TCP server through TCP/IP to the ESP8266 port 8266.4. Administering OS (linux): install the necessary software packages Tornado, Python, and Pip.5. Testing/Troubleshooting

    the following diagram describes the apparatus getting ready to be tested.

    The following video describes the operation of clicking on the website to send a command via WiFi to ESP8266 with Arduino Mega to turn on the AC lamp for 2 seconds.

    Step 1: Computer Networking

    Parts needed: WiFi Router Note: ESP8266 defaults to IP address of 192.168.1.XYZ out of the box. Both the ESP9266 with Arduino Mega and the server will connect tothis WiFi Router network of 192.168.1.XYZ/24. Ensure that firewall rules are removed temporarily or a permit all are applied during testing.

    1. setup WiFi Router to issue IP Address via DHCP using the IP address pool 192.168.1.XYZ; subnetmask set to /24 e.g 255.255.255.0. With the router available onhand, it is configured to allocate IP address in the range of 192.168.1.2 to 99 to PC. Just a matter of personal preference.

    2. setup WiFi security, OPEN, WEP, or WPA. Current setup on existing WiFi Access Point/Router. For the sale of simplicity during testing, OPEN can be configured. Forlong term usage, it is recommended to configure for WPA.

    3. Configuration on different brands of WiFi Router might be slightly different from one and another. RTFM. Alternative: Modify the settings in ESP8266 to suit the networkaddress on the existing WiFi Router network.

  • http://www.instructables.com/id/Use-ESP8266-to-Internet-enabled-AC-Appliances/

    Step 2: Electrical & Electronics

    Parts needed: IoT inspired Multiplug modified with SSR; ESP8266 connected to Arduino Mega.

    Th details steps of modifying a multiplug with SSR is available on instructables http://www.instructables.com/id/IoT-inspired-multiplug-using-SSR/ or here http://shin-ajaran.blogspot.sg/2014/11/iot-inspired-multi-plug-modified-with.htmlThe details steps of connecting an ESP8266 to Arduino Mega is available on instructables http://www.instructables.com/id/noobs-guide-to-ESP8266-with-Arduino-Mega-2560-or-U/ or here http://shin-ajaran.blogspot.sg/2014/12/noobs-guide-to-esp8266-with-arduino.htmlonce these two building blocks are ready, connect pin7 of arduino mega with the signal pin of the SSR. VCC on the SSR to 5V on arduino and GND to GND on arduino.Ensure all components are connected to the common ground.

    Step 3: Software (Programming)There are 2 pieces of software necessary for setting up this apparatus. One, the firmware that is residing in the Arduino Mega with ESP8266 and controlling the SSR inthe multiplug, and the other is the software residing in the linux server to send a "command" via a website.

    The firmware deals with the necessary parameters of ESP8266 to connect to a WiFi network, and waits for the "command" from the server via TCP port 8266. The portnumber is a deliberate choice, but it is not recommended to choose ports that are in the "well known" e.g port number < 1024. Choose ports that are in the ephemeralports region if it pleases you. The "command" is a keyword sent by the server side software, e.g "LED". Upon receiving this keyword by the ESP8266 and Arduino Mega,pin7 is held high for 2 seconds and then held low for testing purposes. The "command" is a variable that can be customized. Out of convenience, and also the discoveryof the LEDServer software on github, the keyword "LED" is used.

    The server side software is obtained from github out of the convenience. why reinvent the wheel??? Many thanks to contributor! Please follow the github URL below for adetailed descriptions on the static html page and python. Every time the button send is pressed, the string "LED, R, G, B" is sent to ESP8266. Essentially, only the "send"button and the keyword "LED" are used by this setup in particular. The original intention of this server side software is to use the variable R, G, B that is of type integermeasuring from 0-255 for setting the colour of neopixel LED strip.

    Alternatively, and for the sake of simplifying the server side software for testing there is an opensource tool sockettester v3.0 can be used. URL herehttp://sockettest.sourceforge.net/ The ESP8266 LED Server software is used as an example for the sake of complicity to the explanations of this IoT setup.

    code for firmware here: https://gist.github.com/teos0009/60d9d10b9441cc2bc0a2

    code for server software on linux here https://github.com/Doomhammer458/ESP8266-LED-Server

  • http://www.instructables.com/id/Use-ESP8266-to-Internet-enabled-AC-Appliances/

    Step 4: Administering OS

    Since the chosen server side software mentioned earlier runs off linux; there are several pre-requisite steps needed. In this setup, a virtual machine running ubuntu 14.04desktop is assumed, and a USB WiFi adapter is connected to this virtual machine. The server side software requires python, Tornado webserver that can be installed viapip.

    1. Configure USB WiFi adapter to connect to the WiFi router. This step varies, depending on the WiFi security setup such as OPEN, WEP or WPA.

    Existing WiFi network is using WPA, so it has to be set up accordingly.

    apt-get install wpasupplicant wireless-tools

    nano /etc/network/interfaces

    #add in the following ssid and wpa password

    auto wlan0 iface wlan0 inet dhcp

    wpa-ssid "the_SSID"

    wpa-psk "the_password"

    #restart

    2. install pip (if it is not installed) sudo apt-get install python-pip3. install tornado (if it is not installed) pip install tornado4. execute the server side software as per the instructions in github. The following diagram describes this operation.

  • http://www.instructables.com/id/Use-ESP8266-to-Internet-enabled-AC-Appliances/

    Step 5: Testing/Troubleshooting

    check IP address of the devices from WiFi Router's management console, and ping the devices. The following screenshot describes this operation of ping.

    Test ESP8266 for functionality using AT commands.The following diagram describes the AT commands used for testing.

  • http://www.instructables.com/id/Use-ESP8266-to-Internet-enabled-AC-Appliances/

    Step 6: Savour the momentSavour the moment

    Related Instructables

    A newbie'sguide to setupESP8266 withArduino Mega2560 or Uno byshinteo

    ESP8266 WiFitemperature andhumidity sensorby EasyIoT

    ESP8266 WiFIwater leaksensor byEasyIoT

    ESP8266 WiFirelay switch byEasyIoT

    An inexpensiveIoT enablerusing ESP8266bygopinath.marappan

    Blink forESP8266 native,like arduinousing Windowsby jbeemster

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    Comments2 comments Add Comment

    Akin Yildiz says: Dec 28, 2014. 5:44 PM REPLYnice to see so many great tutorials on this wifi module.. i've been waiting for something this cheap/small for a long time. i have all the parts needed for thisproject, hopefully i'll get to it one day. I will be using your instructions. thank you..!

    shinteo says: Dec 29, 2014. 1:44 AM REPLYhi akin, you are more than welcome to use the data uploaded :)


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