Difference between revisions of "Open Source Smart Socket"

Outline

• Project: Microduino open source smart socket (ESP8266connect with Blynk)
• Objective: Mobile phone remote control socket on and off.
• Difficulty: Low
• Time-consuming: 2 hours
• Maker: ray

• Introduction:
  • The user can use mobile phone to surf the Internet to connect with Blynk control the Internet of things.
  • The core control module Microduino-Core+ controls the relay switch after receiving introductions.
  • WiFi wireless module Microduino-WIFI(ESP) is responsible for wireless communications.

Bill of Materials

Principle of the Experiment

• Principle of the Circuit's Control
• The socket has two main components on the control panel.
  • Switching mode power supply: Change 220V city power into 5V working voltage to supply Microduino module with power.
  • Relay: Microduino module switch control the socket through it.

• The socket can pick up any electrical appliances.（<1250W）
• Microduino core module controls the switch of the relay to control the switch of the household appliances.
• It is actually a smart switch which can use weak electricity to control strong electricity.
• Principle of Wireless Communication
  • Use Microduino-WIFI(ESP) WiFi communication module to connect with the wide area network.
  • Use Blynk APP to communicate through Blynk server.

Obtain, and Configure Blynk

• Follow our steps below to know how Microduino and Blynk interact.

Get the Mobile Client of Blynk

Please refer to the tutorial：[#.E5.88.9B.E5.BB.BA.E9.A1.B9.E7.9B.AE Ge, and configure Blynk] You can scan the qr code to get the smart socket APP.

Of course you can also do one by yourself. If you do it yourself, you can name it as outlet.

Then click on the panel and you’ll call up WIDGET BOX, where there are a lot of controls for you to choose.

Select Value Display, and input state to show this control is used to obtain the state of the socket switch. INPUT selects V0, and READING FREQUENCY select 1second to show the frequency of the socket to send state.

Then put a led displaying control to simulate a LED lamp, and set INPUT as V1.

BLYNK_READ(V0) {
  if(digitalRead(outletPin)) {
    Blynk.virtualWrite(V0, "ON");
    ledState.on();
  } else {
    Blynk.virtualWrite(V0, "OFF");
    ledState.off();
  }
}

Finally choose a button control, and set the OUTPUT as D6, on behalf of controlling the D6 pin of Microduino.

Finally, it looks as this in your mobile phone panel

Push the button, and it will show the socket has become the open state.

Program Download

Smart Socket Github: ESP8266BlynkOutlet

Programming

• Overlay Microduino-Core+ and Microduino-USBTTL together.
  • Connect Microduino-USBTTL with USB cable and prepare to upload programs.
  • Note：Please upload programs before stacking all modules together.
• Open Arduino IDE for Microduino environment. （The reference to set up：AVR Core：Getting started）
• Click [Tool] bar, confirm board card（Microduino-Core+） processor（Atmega644pa@16M,5V） selected correctly, and choose the corresponding port number(COMX)
• Click [File]->[Open], browse to the project program address, and click "ESP8266BlynkOutlet.ino" program to open it.
• After all these are correct, click "→" button to download to the development board.

Assemble the Smart Socket

Step1 First, use three 4mm screws to fix the circuit board on the bottom case, then prepare Microduino-WIFI(ESP) and Microduino-Core+.

Step2 Overlay Microduino-WIFI(ESP) and Microduino-Core+ on the baseboard of the smart socket.

Step3 Make the smart socket shell buckle into the pan, use a 8mm-long screw to screwing in, and fix the top and bottom cases. Now the smart socket part has been set up completely.

Operating Introduction

Insert the smart socket into a home one. Insert any electric power cord in the home into the smart socket, such as the electric power cord of the television, the refrigerator, and the humidifier. Here we take the phone charger for example, and inset it into the smart socket. Open the Blynk client and press the switch button, you will see the indicator lights up, and then it start charging the mobile phone. In the picture: ① is the switch button. ② is the power indicator light. ③ is the on and off indicator light of the smart socket.

Attention Problem

• Contacting with the electricity is very dangerous, so pay attention to safety！
• All installation operation can’t be processed with power！
• After the installation and the jump, even intelligent socket is closed, you must not touch the power switch！

FAQ