Ai-thinker wifi modules manufacturer tell you How to Choose Your ESP8266 Module

    How to choose Your ESP8266 Module      From :Ai-thinker 
The ESP8266 is an amazing chip for all your home automation & Internet of Things projects. This chip costs less than $5, has WiFi connectivity, an onboard processor, and is compatible with the Arduino IDE. I already wrote a guide on how to get started with the ESP8266, but I wanted to dive deeper and answer a fundamental question: how to choose your ESP8266 module?
Indeed, there are many choices available on the market, and it is easy to get lost between all of them. This is why I wrote this guide to help you out choosing your ESP8266 module for your next project. This list is of course non-exhaustive, but these all are modules I tested myself and I was satisfied with. Let’s dive in!

PAD Size(Bottom):0.9*1.7mm
Pin Pitch:2.54mm
The first module of this guide, which is one of the first ESP8266 modules that came out on the market, is the ESP-01 module. It is the cheapest and nearly the smallest module available. It is perfectly usable with the Arduino IDE for example.
However, it comes with serious disadvantages. First, you can’t plug it into a breadboard without an adapter. Then, you don’t have access to all the input/output pins of the ESP8266 chip, which is a problem if you have complex projects that you want to build. However, for simple projects, this is a good module to start with.

The next one I wanted to mention in this list is the ESP-07, which is the one you see on the right on the picture. This module can’t be used alone on a breadboard, as you need an adapter board (usually sold with the module) to use it in your breadboard projects. It is actually the base of several other ESP8266 modules, as we will see later in this guide.
The advantage of this module is that it’s quite easy to integrate on a PCB later on, so if you plan to develop your own ESP8266 home automation projects in the future, that might be the ideal solution for you.


Add Internet to your next project with an adorable, bite-sized WiFi microcontroller, at a price you like! The ESP8266 processor from Espressif is an 80 MHz microcontroller with a full WiFi front-end (both as client and access point) and TCP/IP stack with DNS support as well.  We do sell these on a breakout, but maybe you wanna just put this in your own project PCB.

As of Sept 3rd, we are shipping the AI-thinker ESP-12E version which has the SPI flash pads brought out on the bottom row. Note that you cannot use them for GPIOs or anything, they're there so you can program the FLASH chip only.

These modules are very easy to hand solder, with big pads! We have this part in the Adafruit Eagle library (Ai-thinker ESP12) - the extra pads don't appear but they are not usable anyways.

Comes with 4MB flash chip, ESP processory, and onboard antenna. These come pre-progammed with the NodeMCU Lua firmware, so you are ready to rock. Some extra parts will be needed to get this going, check out the HUZZAH schematic for the extra components we recommend

For advanced users only! This product is just the module - which can be difficult to use.  Click here if you're looking for the Huzzah ESP8266 Breakout!

Product Feature:
• 802.11 b/g/n
• Integrated low power 32-bit MCU
• Integrated 10-bit ADC
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLL, regulators, and power management units
• Supports antenna diversity
• Wi-Fi 2.4 GHz, support WPA/WPA2
• Support STA/AP/STA+AP operation modes
• Support Smart Link Function for both Android and iOS devices
• Support Smart Link Function for both Android and iOS devices
• STBC, 1x1 MIMO, 2x1 MIMO
• A-MPDU & A-MSDU aggregation and 0.4s guard interval
• Deep sleep power <10uA, Power down leakage current < 5uA
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)
• +20dBm output power in 802.11b mode
• Operating temperature range -40C ~ 125C
PAD Size(Bottom):0.9*1.7mm
Pin Pitch:2mm
So Which Module Should You Get?
Of course, the answer depends on what you want to do with your ESP8266 module. If your goal is to experiment with your ESP8266 on a breadboard, then I really recommend the the AI-thinker ESP8266 module.
If your plan is to integrate your ESP8266 on your own PCB in the future, then I can only recommend to use the ESP-07 module + an adapter breakout board.

more info: nicole@aithinker.com 


NodeMCU connect Things Easy

NodeMCU connect Things Easy

An open-source firmware and development kit that helps you to prototype your IOT product within a few Lua script lines .
Features:Open-source, Interactive, Programmable, Low cost, Simple, Smart, WI-FI enabled

1)Arduino-like hardware IO
Advanced API for hardware IO, which can dramatically reduce the redundant work for configuring and manipulating hardware. Code like arduino, but interactively in Lua script.

2)Nodejs style network API
Event-driven API for network applicaitons, which faciliates developers writing code running on a 5mm*5mm sized MCU in Nodejs style. Greatly speed up your IOT application developing process.

3)Lowest cost WI-FI
Less than $2 WI-FI MCU ESP8266 integrated and esay to prototyping development kit. We provide the best platform for IOT application development at the lowest cost.

Development Kit:
The Development Kit based on ESP8266, integates GPIO, PWM, IIC, 1-Wire and ADC all in one board. Power your developement in the fastest way combinating with NodeMCU Firmware!

10 GPIO, every GPIO can be PWM, I2C, 1-wire

FCC CERTIFIED WI-FI module, PCB antenna

more information :nicole@aithinker.com 


Update the Firmware in Your ESP8266 Wi-Fi Module

Update the Firmware in Your ESP8266 Wi-Fi Module  by 
Objective and Rationale
This is the author's second article about the ESP8266 integrated circuit, a relatively new chip comprising a full-featured 32-bit RISC µC and a built-in 802.11 b/g/n Wi-Fi circuit. The first article described using the Arduino IDE to program the ESP8266, and contains some important background information that will not be repeated here. If you haven't read it, please do.

There is no shortage of information on the Web about the 8266; in fact, there may be too much...of the wrong type. The developers of the IC, Espressif, have apparently chosen to not only outsource manufacturing, but also to avoid being directly involved in the line of ESP modules that utilize the ESP8266 chip. Instead, they offer information and support services via a forum for those with the patience and persistence to search the maze. Adding to the confusion is the existence of another forum that, despite being named esp8266.com, doesn't seem to be operated by Espressif. In addition, there is a plethora of resellers, video bloggers, and writers that also offer information that runs the gamut from good to confusing to totally wrong.

ESP modules are available from a variety of sources, and the firmware contained in the ESP8266 chips on the modules is almost always outdated and often of questionable origin. The firmware "updates" and tools that are available from these same sources are also sometimes suspect. Consequently, it is the aim of this article to document a procedure for downloading the latest available firmware directly from Espressif and installing it on an ESP8266 using the flash tool provided by Espressif.

 Hardware Setup
In order to update the firmware on any ESP8266, it is necessary to have it properly powered and connected to a PC. In addition, a means of resetting the IC and putting it in the download mode must be provided. The schematic diagram and photograph below show the recommended setup; note that the wire colors in the schematic correspond to the wire colors in the photograph. As you see, it is based on an ESP-01 module, but the same connections will work with other modules so long as the same ESP8266 I/Os are used as shown in the schematic diagram. For additional details, see this article.
PuTTY Terminal Program
Once the hardware setup is complete, the next step is to power up the ESP8266 and attempt to communicate with it. A simple terminal program is required and the following procedure uses PuTTY, a free program available here. You can use another terminal program, but you will have to make allowances for any differences between it and PuTTY.
Open PuTTY, and click the Serial radio button. Enter the COM port number (which must be less than 10) and the baud rate (which will most likely be 115200 or 9600.)
In the small Saved Sessions window, enter ESP8266, and click the Save button. The PuTTY window should be similar to the picture below.
Click the Open button, and a PuTTY terminal session window should open.
Enable Caps Lock on your PC, and type AT, but don't press Enter. You should see AT in the PuTTY terminal window. If you don't, you may have selected the wrong COM port or the wrong baud rate. Close PuTTY and start again at the top of this section. The permissible baud rates are: 9600, 19200, 38400, 74880, 115200, 230400, 460800, and 921600; try each one in turn until you find the one that works.
When you see AT in the PuTTY terminal window, while holding the Ctrl key down, press the M key followed by the J key. Release the Ctrl key. You should see OK in the PuTTY terminal window as shown in the picture below.
Note that if you make a typing mistake while in the terminal session window, it may not be possible to successfully correct the mistake. Rather than try to edit out your mistake, it is often better to simply hold down the Ctrl key, and press the M key followed by the J key, which will generate an Error message. Then, you can start again and type the correct input.

When you see that first OK message, you have cleared a big hurdle. Then you know that your hardware setup is correct, the ESP module is functional, you have selected the correct COM port, and you have chosen the correct baud rate. Close the PuTTY terminal session window, and click OK when PuTTY asks if you are sure.

Now, reopen PuTTY, select the ESP8266 saved session, and click the Load button. This should place your previously determined COM port and baud rate settings in the appropriate windows. Click the Open button, and a new PuTTY terminal session window will open.

Enable Caps Lock on your PC, and type AT, but don't press Enter. You should see AT in the PuTTY terminal window. Type a + sign followed by GMR. When you see AT+GMR in the PuTTY terminal window, while holding the Ctrl key down, press the M key followed by the J key. Release the Ctrl key. You should see the ESP8266 firmware information in the PuTTY terminal window similar to that shown in the picture below.
In the first line above, you see the AT+GMR command that you typed. As you may know or have guessed, the command scheme that you are using to communicate with the ESP8266 is called an "AT command set" because all the commands begin with the letters "AT."

Unfortunately, there are many different versions of AT command sets; they all contain some of the same commands, but there are many AT commands that are not standard among all AT command sets. Even within the ESP8266 community, there are a number of versions. The second line above indicates that this particular 8266 device is programmed with firmware that uses version of the AT commands. Somewhere there is a document that defines the commands that are included in version, but without that document you must use trial and error to determine the AT commands that work. That is a very tedious process at best, but fortunately there is a solution to the dilemma that will be explained shortly.

Line three identifies the Software Development Kit (SDK) version that was used for this particular ESP8266 as version 1.1.1. Each SDK also includes an AT command set that is part of the firmware, and that is suited for controlling that firmware. Ostensibly, AT version works with SDK version 1.1.1. But still one needs the document that describes AT version in order to know what commands are included. There is a better way as described in the next section of this article, but before you go there, try another AT command to see what happens.

Enable Caps Lock on your PC, and type AT+CWLAP. When you see AT+CWLAP in the PuTTY terminal window, while holding the Ctrl key down, press the M key followed by the J key. Release the Ctrl key. After a few seconds, the terminal window should look similar to the photo below.
AT+CWLAP has commanded the ESP8266 to list all the Wi-Fi access points within its range. In the case above, two access points were found: one is called "ATT936" and the other is called "tracecom 2.4." Your results will, of course, be different and should include your own Wi-Fi network plus those of any of your very close neighbors.

Close the PuTTY terminal session window, and click OK when PuTTY asks if you are sure.

ESP Flash Download Tool
Although it's rarely mentioned on the Web, Espressif, the designers of the ESP8266 integrated circuit, have created a specific piece of software to update the firmware in their chips. It's the ESP Flash Download Tool, and it's available here. Download, extract, and install the latest version on your PC; as of this writing it's FLASH_DOWNLOAD_TOOLS_v2.4_150924.rar.

Start the tool, and you should see two windows open: a GUI window with places for you to enter information, and a terminal-like window that logs the actions taken.
A few things are worth noting, but are not reasons for concern.

The GUI window is identified as V2.3 while the log window is identified as V2.4. Apparently the GUI window is mislabeled.
The GUI window COM port and baud rate may contain data.
The GUI window address boxes may contain data.
The log window may contain data.

Getting the Latest Firmware
Espressif has a page where they post the latest firmware available. Go to bbs.espressif.com, click on the SDKs entry under Downloads, and then click on "latest release" under Announcements. As of today, 28 Oct 2015, you will see a page that includes the following.

The latest release of the Non-OS SDK (Software Development Kit) is what you want, and it would seem that you could click just under "Latest Version: 1.4.0" and get the latest version. But that's not quite right; notice that there is a patch available identified as esp_iot_sdk_v1.4.1_15_10_22. It's not really a patch; it's a corrected version of version 1.4.0, and was released on 22 Oct 2015. You want that and the AT_v0.50 bin files. Click on each of those in turn and download the files; you can save them wherever you want, but they are fine in the Downloads folder.

Of course, by the time you read this, there may be later SDK releases and their locations may be altered, but at least you know where to look. Just be sure that you read carefully to be sure you are getting the very latest version. As you have seen from the preceding, it's not always obvious.

You may have noticed that there is a section for downloading documents. They all contain good information, but sometimes there is a substantial loss in the translation from Chinese to English. For now, be sure to get the latest versions of ESP8266 AT Instruction Set and Espressif IOT SDK User Manual; both are currently at version 1.4.

Installing the Firmware
Start the ESP flash download tool and make sure that none of the boxes at the top left of the GUI window are checked. Enter the COM port you are using, and a baud rate of 115200 in the boxes near the bottom of the window. Note that as you enter data, it is recorded in the log window.

Power up your ESP programming setup, and connect it to your PC. Press and hold the Reset button, and then press and hold the Flash button. Release the Reset button, and then release the Flash button. Click the START button in the flash download tool GUI window. The flash download tool should check the ESP8266 in your setup, and produce a report similar to the pictures shown below. Press and release the Reset button on you programming setup to exit the ESP8266 download mode and resume normal operation.

Notice that the GUI window now contains information about the ESP8266 including the size of the flash memory (8Mbit in the example,) the crystal frequency (26MHz in the example,) and two MAC addresses for the chip. The same information is contained in the log window.

Next, click the box in the GUI window labeled "SpiAutoSet," which will cause the download tool to automatically select the correct flash size and crystal frequency.

Now, you need to select the files to be installed in the ESP8266 and set the starting memory address for each file. There are four files that must be correctly installed in order to update your ESP chip. Open the Espressif IOT SDK User Manual and find the section on writing images into flash. In version 1.4 of the manual, it begins on page 20. Next, locate the part that describes the version that supports Cloud Update (FOTA,) and within that part, find the table that pertains to the flash size in your ESP8266. In the example, the flash size is 8Mbits which is equal to 1024KB, so table 2 on page 25 of the manual provides the information needed for the example. See the picture below.

The four files needed are: esp_init_data_default.bin, blank.bin, boot.bin, and a user1.bin file. The address at which each file is to be installed is shown next to the file name. The first three of the required files are located in the esp_iot_sdk_v1.4.1_15_10_22 folder you previously downloaded from bbs.espressif.com, and the fourth is located in the AT_v0.50 bin files. Navigate to where those downloaded files are, and copy each one into one of the blanks at the top of the Flash Download Tool GUI window; enter the correct address for each file in the blank next to the file name. Follow these steps for each file.

*Click inside a file "set firmware path" space.
*Click the ... button to the right of the space.
*Navigate to the location of the desired file and click the file. The GUI will automatically enter the file name in the space.
*Enter the correct address (from the table) for each file.

Note that the files to be flashed may not be exactly the same as those listed in the table, but will be a close variant. With a little examination and applied logic, the correct files should be readily apparent.

Now, click the four check boxes to the left of each file name. The Flash Download Tool GUI window should be similar to the picture below. Double check the addresses against the table.
On your ESP programming setup, press and hold the Reset button, and then press and hold the Flash button. Release the Reset button, and then release the Flash button. Click the START button in the Flash Download Tool GUI window. The download should begin, and its progress should be shown in the Flash Download Tool GUI window and the log window, as depicted below.
As shown above, a successful flash operation will result in all the files being sent to the ESP8266, and the COM port closed.

Checking for a Successful Flash
When the flash operation is complete, close the Flash Download Tool. Remove power from the ESP programming setup, and then reconnect the power.

Reopen PuTTY, select the ESP8266 saved session, and click the Load button. This should place your previously determined COM port and baud rate settings in the appropriate windows. Click the Open button, and a new PuTTY terminal session window will open.

Enable Caps Lock on your PC, and type AT, but don't press Enter. You should see AT in the PuTTY terminal window. Type a + sign followed by GMR. When you see AT+GMR in the PuTTY terminal window, while holding the Ctrl key down, press the M key followed by the J key. Release the Ctrl key. You should see the ESP8266 firmware information in the PuTTY terminal window similar to that shown in the picture below.

As you can see, new firmware is evident in the ESP8266. It has been updated from SDK version 1.1.1 to SDK version 1.4.0. In addition, the corresponding version of the AT command set has also been installed, and is documented in ESP8266 AT Instruction Set, Version 1.4.

Close the PuTTY terminal session window, and click OK when PuTTY asks if you are sure.

Last Words
With a couple of practice sessions, the entire firmware flash process can be completed in much less time than it takes to read this article. Once it's done, you can be confident of what is inside your 8266, and can focus on your Wi-Fi project instead of "guessing and hoping" about the ESP firmware and the necessary AT command set.

As the biggest agent of espressif 8266 chip in China ,AI-thinker provide All ESP8266 wireless modules .In order to explore the global market ,Ai-thinker all products as EX price support Wholesale. MOQ>800pcs share VIP service .
support : nicole@ai-thinker.com.

Breadboard and Program an ESP-01 Circuit with the Arduino IDE

Breadboard and Program an ESP-01 Circuit with the Arduino IDE     by 

ESP8266 Microcontroller/Wi-Fi Integrated Circuit
A new microcontroller has captured the attention of professional designers and hobbyists alike, and it has the potential to be a force majeur in the internet of things. Bearing the nondescriptive name "ESP8266," this highly integrated circuit consists of a 32-bit RISC processor with all the bells and whistles you would expect in a full-featured µC, but that's not all. The ESP8266 also includes a built-in 802.11 b/g/n Wi-Fi circuit that is ready to be directly connected to an antenna.

The ESP8266 is currently available only in a 32-pin QFN package, and there is just one IC in the family. The developer, Espressif, in Shanghai, China, has chosen to take full advantage of manufacturing efficiencies of scale and offer a single IC that is suitable for use on a variety of PCB assemblies. Presently, there are more than a dozen ESP PCB modules that differ primarily in antenna styles and the number of I/Os available. Because of the ESP8266's QFN package, most hobbyists will be pleased with that decision, especially since market prices start at less than US$5 for the low-end model, dubbed the ESP-01, and pictured below. Click the photo for a larger image.

A very active community support forum exists for the ESP8266, and is an excellent source for ideas and information. Originally, documentation was only available in Chinese, and firm application information can still be hard to come by. Currently, many DIY projects are operating in the "trial and error" mode, but there are many aftermarket suppliers who are selling development platforms and accessories. However, as you will see later in this article, it's not difficult to get an ESP8266 up and running on a solderless breadboard.

Programming Options
From the supplier, many (maybe all) of the ESP8266 modules are loaded with "AT" firmware, and can be programmed via a simple terminal program. If you are using the module primarily to exploit its Wi-Fi capabilities and controlling it with another µC, this could be all you need.

A more sophisticated option is available from NodeLua, which offers open source firmware based on the Lua programming language. NodeLua is still in development, but already contains extensive capabilities. Other choices include Python, BASIC, and the Arduino IDE, which is featured in this article.

ESP-01 Ins and Outs
The ESP-01 module contains the ESP8266 MCU and a flash memory chip. There are two LED's: a red one which indicates power is connected to the module, and a blue one which indicates data flow, and can also be controlled by user programming. The Wi-Fi antenna is the PCB trace that covers the top of the module; it's called a Meandered Inverted-F Antenna (MIFA,) is surprisingly efficient, and only mildly directional.
There are eight connection pads near the bottom of the module; the figure above identifies their functions. Usually, two 4-pin male headers are inserted in the rear of the module and soldered on the front. This makes the I/Os accessible, but is not breadboard friendly, and requires flywires from the ESP-01 to a solderless breadboard. This technique works, but it is messy. There is an alternative way as shown below.
The header on the front of the PCB uses standard right angle pins with no modifications required. The header on the rear uses extra long pins that have been bent in a right angle configuration to accomplish .3" of separation between the rows. This method allows the ESP-01 to be inserted in a solderless breadboard in the vertical orientation straddling the center gap, and makes all eight pins independently accessible.

Connecting Things Together

The schematic diagram below shows the connections required to the ESP-01, and the photographs show the completed solderless breadboard assembly. The wire colors on the schematic correspond to the wire colors in the photographs.
Construct the assembly as shown, but do not connect the cable from the USB to TTL converter to the PC until you have set the shunt on the converter PCB to the 3.3V position, and double checked all wiring. Using 5V to power the ESP-01 could damage it beyond repair.

Between the schematic diagram and the photographs, you should have most of the information needed to assemble the solderless breadboard setup. The notes below will also help.
  • The USB to TTL converter shown in the photographs utilizes an FTDI 232 UART chip and works well with Windows, Mac, and Linux operating systems. It also provides a 3.3VDC power source for the ESP-01. Be certain that the shunt on the converter PCB is set to output 3.3V; that will ensure that both the supply voltage and the TxD signal will be at the correct voltage. Using a higher voltage could damage the ESP-01.
  • Whatever USB to TTL converter you decide on should be installed and tested prior to using it with the ESP-01 breadboard setup. Drivers for FTDI devices are located at the FTDI web site.
  • Estimates of the current required for the ESP-01 during Wi-Fi operation vary from 250mA to 750mA. The current supplied by the USB to TTL converter should suffice for programming the ESP-01, but may prove to be inadequate for long term use. A better choice is a filtered regulated 3.3VDC supply capable of 1A or more.
  • The DTR and CTS leads from the USB to TTL converter are not required and are not connected.
  • The two switches shown are normally open (NO) single pole momentary contact pushbuttons.
  • One of the discrepancies in the information available for the ESP-01 is whether CH_PD should be connected directly to +3.3V, or should be connected through a 10k pull-up resistor. The author has tested both methods, and has found both to work. After you build and test the circuit as shown here (with CH_PD tied directly to +3.3V,) try using a 10k resistor instead of the direct connection. If the circuit works with the 10k pull-up resistor, leave it in the circuit.
As you see in the photographs above, the use of fly wires from the USB to TTL converter is not optimum. A better option is to replace the six right angle pins on the converter with six straight pins on the bottom of the PCB. The modification will allow the USB to TTL converter to be plugged into the solderless breadboard and will result in a much neater and less fragile assembly, as shown in the following photo.

Powering Up

Before connecting the USB to TTL converter to your PC, check to be sure that the voltage selection shunt is in the 3.3V position, and that all the wiring on the ESP-01 breadboard setup is correct and secure. Then, plug the USB cable in; the red LED on the ESP-01 should light and stay on, and the blue LED should flicker whenever there is signalling between the EXP-01 and the PC. Next, test the reset switch by pressing and and holding it down. Look at the ESP-01; when you release the reset switch, the blue LED should flash twice. If all is well at this point, disconnect the circuit from the PC and proceed to the next section.

Arduino IDE

The recommended Arduino IDE version for use with the ESP8266 modules is Version 1.6.5. If you have an earlier version, you can try it and see if it works, or you can upgrade to 1.6.5.
  • Once the proper Arduino IDE is installed, start the program and click File, Preferences, and look for the entry box for Additional Board Manager URLs. Enter the following URL exactly as it is written and then click OK.
    • http://arduino.esp8266.com/stable/package_esp8266com_index.json
  • Next, click Tools, Board Manager, and scroll down the list to find "esp8266 by ESP8266 Community." Select this entry and click the Install button; downloading and installation will begin and continue for a few minutes. While it is installing, take a look at the different platforms supported. In addition to the generic ESP8266 Module, support is provided for the NodeMCU, the Huzzah, and the SweetPea. By the time you read this, probably more will have been added.
  • When the installation is finished, click the Close button.
  • Now, click Tools, highlight the Board selector, and choose "Generic ESP8266 Module."
  • Click Tools again, and visually confirm that the board selected is Generic ESP8266 Module.
  • Click File, Examples, and scroll down the list until you come to ESP8266WiFi, and then click WiFiScan. A new IDE window should open containing the WiFiScan sketch.
Reconnect the circuit to the PC and confirm that the red LED on the ESP-01 is lit. Click Tools, Port, and select the port where the Ai-thinker ESP-01 is connected. Finally, you are ready to program the ESP-01.
Press and hold the Reset button, and then press and hold the Flash button. Release the Reset button, and while holding the Flash button pressed, click the Upload arrow in the Arduino IDE. The sketch should compile in a minute or so, and when it is complete, release the Flash button. The compiled code will be sent to the ESP-01; as it is sent, the blue LED on ESP-01 will flicker.
To see the results of all this clicking and choosing, click Tools, Serial Monitor, and set the baud rate in the lower right corner of the Serial Monitor window to 115200. If you have an earlier version of the ESP-01 (probably built on a blue PCB,) the baud rate is most likely 9600.
The ESP-01 should be scanning for Wi-Fi networks and reporting the results in the Serial Monitor window, as shown in the example below.
You should see your own network in the report, and all other networks that are within range of the ESP-01. The numbers in parentheses show each network's signal strength, and because the numbers are negative, lower numbers represent stronger signals.
The Door is Open
The ability to program an ESP8266 using the Arduino IDE hugely expands the user base for these Wi-Fi enabled chips. The ESP-01 and its larger cousins provide an extremely capable hardware platform at a low cost. Add the ease of use of the Arduino IDE, and designing applications for the internet of things is within the reach of almost anyone.
All products can be provide free sample in Ai-thinker.
Any more question please contact with nicole@aithinker.com.


Ai-thinker ESP8266 serial port Wifi Remote wireless module ESP-12F

Ai-thinker Hot sale esp12F wifi module esp8266

Product Feature:
• 802.11 b/g/n
• Integrated low power 32-bit MCU
• Integrated 10-bit ADC
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLL, regulators, and power management units
• Supports antenna diversity
• Wi-Fi 2.4 GHz, support WPA/WPA2
• Support STA/AP/STA+AP operation modes
• Support Smart Link Function for both Android and iOS devices
• Support Smart Link Function for both Android and iOS devices
• STBC, 1x1 MIMO, 2x1 MIMO
• A-MPDU & A-MSDU aggregation and 0.4s guard interval
• Deep sleep power <10uA, Power down leakage current < 5uA
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)
• +20dBm output power in 802.11b mode
• Operating temperature range -40C ~ 125C
PAD Size(Bottom):0.9*1.7mm
Pin Pitch:2mm

Technical Specification

Item Type

Wireless parameter
Wlan Standard
Hw Param

Date Interface
UART/HSPI/I2C/Ir Remote Contorl
Operating Voltage
3.0-3.6V(suggest 3.3V)
Operating Current
Operating Temperature
Storage Temperature
Normal Temperature
Perpheral Interface

Software Parameters
Wlan Network Mode
Security Mechanism
Encryption Type
Upgrade Firmware
Local serial burn
Networking Protocol

General Description

ESP8266 UART is an ultra-low power consumption - WiFi passthrough module, highly competitive in the industry of packaging size and low power consumption technology, designed for mobile devices and Internet application, the user's physical devices can be connected to a wi-fi, to carry on the Internet or LAN communications, realize networking.

♦ESP8266 encapsulation mode is diversiform, antenna can support board PCB, IPEX interfaces and stamp hole three forms;

♦ESP8266 can be widely used in smart grid, smart transportation, intelligent furniture, handheld devices, industrial control, etc

Antenna Form
Extraposition:Stamps hole interface
Extraposition:I-PEX connector,SMA connector
Built-in:PCB antenna

Application area 
-- latest version
--serial CH340 turn wi-fi;
--industrial passthrough DTU;
--wi-fi remote monitor/control;
--toys field;
--color LED control;
--fire control, security intelligent integration management;
--Smart card terminals, wireless POS machine, wi-fi camera, handheld devices, etc

 Functional Description
ESP8266 can realize the main functions including:SerialApp,PWM adjust and control,GPIO control.
SerialApp:Date transmission,the reliability of the transmission is good,the biggest transfer rate of:460800bps.
PWM adjust and control:lighting adjust,rgb led adjust,speed of motor etc.
GPIO control:Control the medallion and relay.

ESP8266 series features
1, ESP-01: PCB antenna, after matching the distance to do about the open 400 meters,  easy to use.
2, ESP-02: SMD package for submission limit, the antenna  can be drawn with the  IPX header  casing.
3, ESP-03: SMD package, the built-in ceramic antenna technology, all available IO leads.
4, ESP-04: SMD package, customers can customize the antenna types, flexible design,  all the IO leads.
5, ESP-05: SMD package, only leads to serial and RST pin, small external antenna.
6, ESP-06: bottom mount technology, leads all the IO ports, with metal shielding shell,  can be had  FCC CE certification, recommended. 
7, ESP-07: Semi-hole chip technology,all the IO leads, with metal shielding shell, can be had  FCC CE  certified IPX  external antenna, can also be built-in ceramic antenna.
8, ESP-08: with the ESP-07, except that the antenna is in the form of customers can  define their own.
9, ESP-09: Ultra-small size package, only 10 * 10 mm, four layer board technology  1M bytes!.
10, ESP-10: SMD interface, narrow body design, 10 mm wide, suitable for light  with controller.
11, ESP-11: SMD interface, ceramic antenna, small volume.
12,ESP-12F:FCC CE certification,PCB antenna

Ai-thinker wifi modules (ESP8266  ESP-01---ESP-14) and A6 GPRS /GSM modules to global market with good quality and EX price,We are one of the main supplier of TCL and lenovo . we have full of confidence to get the FCC ,CE certificate.
email :nicole@aithinker.com