Me Wifi

微信截图_20160129114325

Overview

The main component of Me WiFi Module is ESP8266 module. As a low power consumption UART-WiFi pass-through module using serial communication, ESP8266 can be set to connect with WiFi to construct a WiFi remote control cart, a remote control lamp, etc. Its blue/gray ID means that RJ25 cable should be used to connect it to the port with blue or gray ID on Makeblock Orion.

Technical specifications

● Operating voltage: 3.3V DC
● Input voltage: 5V DC
● Wireless supported: 802.11 b/g/n standard
● Frequency range: 2.412 GHz~2.484 GHz
● Operating current: 50 mA
● Peak current: 200 mA℃
● Chip type: ESP8266
● Default baud rate: 9600
● Module size: 51 x 24 x 18 mm (L x W x H)

Functional characteristics

● Operating mode: STA (workstation) + AP (access point)
● Built-in TCP/IP protocol stack
● Support the WPA WPA2/WPA2–PSK encryption
● Support switchover of Work and PROG modes, and support WiFi programming
● White area of module is the reference area to contact metal beams
● Anti-reverse protection – connecting the power supply inversely will not damage IC
● Adopt RJ25 port for easy connection
● Provide pins to support most Arduino Baseboards

Pin definition

The port of Me WiFi Module has four pins, and their functions are as follows:微信截图_20160129114521

Wiring mode

● Connecting with RJ25
Since the port of Me WiFi Module has blue/gray ID, you need to connect the port with blue or gray ID on Makeblock Orion when using RJ25 port. Taking Makeblock Orion as example, you can connect to ports No. 3, 4, 5, and 6 as follows:微信截图_20160129114619

● Connecting with Dupont wire
When the Dupont wire is used to connect the module to the Arduino UNO Baseboard, its TX and RX pins should be connected to RX and TX pins on the UNO board respectively as follows:

微信截图_20160129114705

Guide to programming

● Arduino programming
If you use Arduino to write a program, the library Makeblock-Library-master should be invoked to control the Me WiFi Module. This program serves to receive data by Me WiFi Module through Arduino programming.微信截图_20160129114840

微信截图_20160129114904

Principle analysis

This module supports three operating modes: STA/AP/STA+AP.
● STA mode: The module is connected to the Internet through a router. The mobile phone or computer implements remote control of devices by Internet.
● AP mode: The module is taken as the access point to implement direct communication between the mobile phone or computer and the module, that is, the LAN wireless control.
● STA+AP mode: the coexistence of two modes, that is, you can perform seamless switching via the Internet control conveniently.
When the power is supplied to the module, its WiFi signal in configuration mode is “ESP (+ chip ID)” without password. Input the address of WiFi extension board: 192.168.4.1 in the browser to open the configuration page, and then you can configure this module. When the module is connected, its red power indicator lights on. After about one second its blue Link indicator is flashing, which means it is started normally but not connected. When the device is connected successfully and performs the first data transmission, the indicator lights on. When the module receives data, the blue receiving indicator is flashing. The toggle switch is used to select a working mode from Work and PROG. Work is the normal working state (usually in this state), and PROG is a programming mode. It should be restarted when mode is switched.
Note: Since the usage of this module is complex, refer to the website for details.

Schematic

Me wifi

20 thoughts on “Me Wifi”

  1. Please point to more WiFI cde examples how to set IP and so on.
    Thank you

    1. Hi Karen, do you ask how to connect the me wifi module to the home Wi-Fi network?
      If yes, you can connect under Join Setup option on the me wifi module’s setup page

  2. please also send me one copy of more WiFI code examples or how to set IP and so on. Thanks.

  3. Can you also send me this information (or least put it somewhere in the forum), thanks.

    1. Hi lgor,

      Have sent you some instructions for reference which may help. Kindly check it.

  4. Would you please be so kind in sending me all the data and examples noted below to me too.

    Thank you very much.

    1. Hi Lucio,

      You need program for the robot with Arduino software by yourself if you use the Me wifi module.

  5. Hi, Please point to more WiFI cde examples how to set IP and so on. i used 192.168.4.1 to connect to Me wifi but don’t work
    Thank you

    1. Hi Angelo,

      Thanks for your advice.
      I will send a Me wifi design report from one of the enthusiast to you for reference.
      Please check your email later.

  6. Hi
    please send me an easy sequence of what I’ve to do for setting .
    Is possible to change the scratch program during the connection?

    1. Hi Luciano,

      The me wifi module doesn’t work with Scrath program.
      I will send you a design report from a enthusiasts to you for reference.

  7. Hi,

    Please also send me an example code how to send data from pc/mobile phone to this module.
    What’s the ip and port ?

    1. Hi Howard,

      Our Me Wifi module has its special firmware. It only has the function to communicate between the PC and the Arduino uno board with serial port transparent transmission.
      I am afraid it doesn’t have the function you mentioned. Anyway, I will send a design report from an enthusiasts to you for reference.

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