====== Modules ======
Most common modules ESP-NN seem to come from AI-Thinkers vendor. Espressif Systems themselves have produced the ESP-WROOM-02 Wi-Fi Module.

All Modules by AI-Thinker : see [[http://wiki.ai-thinker.com/_media/esp8266/esp8266_module_list.png]]
  * 推荐型号 (Green) : Recommended Model
  * 停产型号 (Gray) : Discontinued Model

Product Specification : [[http://wiki.ai-thinker.com/esp8266/docs]]

User Manual : [[http://wiki.ai-thinker.com/_media/esp8266/a000um01a3.pdf]]

There are also modules from other vendors, such as :
  * Olimex, see [[https://www.olimex.com/Products/IoT/]], 
  * Wireless-tag, see [[http://www.wireless-tag.com/index.php/Product/dis/33.html]] 
  * Qilianer, see [[http://en.qilianer.com/product/28032.html]]
  * Smarttime.cn, see [[http://www.smartline.com.cn/]]

and other unknown vendors are starting to become available.

Apparently new versions of older modules are appearing with larger flash sizes. To check the flash size of your module:
  * ''# esptool.py --port /dev/ttyUSB0 --baud 115200 flash_id''
  * Connecting...
  * Manufacturer: c8
  * Device: 4013

Then check out the combo at https://code.coreboot.org/p/flashrom/source/tree/HEAD/trunk/flashchips.h:
  * manufacturer c8 is GigaDevice and device 4013 is GD25Q40, which is a 4Mbit=512KByte device
  * manufacturer ef is Winbond (ex Nexcom) and device 4016 is W25Q32, which is a 32Mbit=4MByte device
===== ESP-WROOM-02 By Espressif Systems =====

{{:wroom2-back.png?600|}}

** CE of ESP-WROOM-02 **

{{:certificate-espwroom02-ce.jpg?600|}}

** FCC of ESP-WROOM-02 **

{{:certificate-espwroom02-fcc.jpg?600|}}


===== ESP-01 =====


Note: Some batches of this module ship with LED Current limiting resistors of the wrong value (47Ohm vs 4.7KOhm). This usually results in the power LED vanishing in a puff of smoke. 

{{:01-01.jpg?200|}}{{:01-02.jpg?200|}}{{:01-03.jpg?200|}}

{{:01-04.jpg?200|}}
===== ESP-02 =====
{{:02-01.jpg?200|}}{{:02-02.jpg?200|}}{{:02-03.jpg?200|}}

{{:02-04.jpg?200|}}
===== ESP-03 =====
{{:03-01.jpg?200|}}{{:03-02.jpg?200|}}{{:03-03.jpg?200|}}

{{:03-04.jpg?200|}}

^ Pin ^ Name ^ Alternate Functions ^ Notes ^
| 1      | GND  |           | (Pin 1 is in the corner close to the crystal and away from antenna) |
| 2      | NC   |           | |
| 3      | UTXD | SPICS1, GPIO1, CLK\_RTC     | Typically used as serial uart0 TX |
| 4      | URXD | I2SO\_DATA, GPIO3, CLK\_XTAL | Typically used as serial uart0 RX |
| 5      | GPIO16 | XPD\_DCDC, RTC\_GPIO0, EXT\_WAKEUP, DEEPSLEEP | Connected to XPD\_DCDC ESP pin, can also be connected to ESP EXT\_RSTB (reset) pin by closing jumper near pin 8; Reset pin is active low and has an internal weak pull-up; Connecting jumper is required to wake-up ESP from deep-sleep: RTC produces pulse on XPD\_DCDC pin that needs to be fed into EXT\_RSTB pin |
| 6      | CH\_PD|                            | Power-down: low input powers down chip, high powers up; tie high for normal operation or module will not function |
| 7      | ANT  |                            | Wifi Antenna, do not connect |
| 8      | VCC  |                            | 3.3V input (pin 8 is between antenna and ESP chip) |
| 9      | GPIO14 | MTMS, I2SI\_WS, SP\_CLK | |
| 10     | GPIO12 | MTDI, I2SI\_DATA, MISO | |
| 11     | GPIO13 | MTCK, I2SI\_BCK, MOSI  | |
| 12     | GPIO15 | MTDO, I2SO\_BCK, SP\_CS | At boot: must be low to enter flash or normal boot (high enters special boot modes) |
| 13     | GPIO2  | I2SO\_WS, U1TXD, U0TXD | At boot: must be high to enter flash or normal boot (low enters special boot modes); Typically is used as uart1 TX for debug logging |
| 14     | GPIO0  | SPICS2, CLK\_OUT       | At boot: low causes bootloader to enter flash upload mode; high causes normal boot |


===== ESP-04 =====
{{:04-01.jpg?200|}}{{:04-02.jpg?200|}}{{:04-03.jpg?200|}}

{{:04-04.jpg?200|}}
===== ESP-05 =====
{{:05-01.jpg?200|}}{{:05-02.jpg?200|}}{{:05-03.jpg?200|}}{{:05-4-01.jpg?200|}}

{{:05-5-04.jpg?200|}}{{:05-4-04.jpg?200|}}
===== ESP-06 ===== 
{{:06-01.jpg?200|}}{{:06-02.jpg?200|}}{{:06-03.jpg?200|}}

:!: **//not// FCC approved (*) ** :!:

{{:06-04.jpg?200|}}{{:06-05.jpg?200|}}{{:06-06.jpg?200|}}
===== ESP-07 ===== 
{{:07-01.jpg?200|}}{{:07-02.jpg?200|}}{{:07-03.jpg?200|}}

Note: some versions have an error on silkscreen: GPIO4 and GPIO5 are exchanged!

:!: **//not// FCC approved (*) ** :!:

{{:06-07.jpg?200|}} under the can by Baoshi

{{:07-05.jpg?200|}} {{:07-06.jpg?200|}} pinout of current 16 pin variant

{{:07-04.jpg?200|}} :!: pinout shows early 14 pin variant

//Notable difference between 14 and 16 pins variants is that 16 pins has LEDs outside shield. Also, antenna socket is on the bottom left, whereas 14-pin has antenna on the top left.//
===== ESP-08 ===== 
{{:08-01.jpg?200|}}{{:08-02.jpg?200|}}{{:08-03.jpg?200|}}

:!: **//not// FCC approved (*) ** :!:

{{:08-04.jpg?200|}}

Two versions of ESP-08 are on the market: one with 7x2 pins (like the one in the picture) and probably a new one with 8x2+ant pins (pinout is the same like the new 8x2 ESP-07)

{{:modules:s-l500.jpg?200|}}
===== ESP-09 =====
{{:09-01.jpg?200|}}{{:09-02.jpg?200|}}{{:09-03.jpg?200|}}

{{:09-04.jpg?200|}}
===== ESP-10 =====
{{:10-01.jpg?200|}}{{:10-02.jpg?200|}}{{:10-03.jpg?200|}}

{{:10-04.jpg?200|}}
===== ESP-11 =====
{{:11-01.jpg?200|}}{{:11-02.jpg?200|}}{{:11-03.jpg?200|}}

{{:11-04.jpg?200|}} This does not appear to be the version 11 board picture . Pins are not at the right end

{{:11-05.jpg?200|}} [[http://www.esp8266.com/viewtopic.php?f=5&t=585|From here]]
===== ESP-12 ===== 

{{:12-01.jpg?200|}}{{:12-03.jpg?200|}}

{{:12-04.jpg?200|}}


<del>:!: ** //not// FCC approved(*) ** :!:</del>

<del>(*) not FCC approved, just labelled to look like they do, not a valid FCC ID on the label</del>


** FCC of ESP-12 ** 

FCC ID: 2ADUIESP-12

{{:esp-12_fcc1.jpg?300|}}
{{:esp-12_fcc2.jpg?300|}}

** CE of ESP-12 **


CE NUMBER: BCTC-141212468

{{:esp-12_ce.jpg?600|}}

Note:This is not an EU CE declaration of conformity, This is a test pass certificate from a third party test company that has no official standing. An official EU DoC must be made by the manufacturer not a third party. Also note safety standard EN60950 does not exist, and has not for many many years. The R&TTE directive quoted ceased to be valid in 2016. These comments and similar apply to a lot of the certificates on this page.

===== ESP-12F =====

{{:esp-12f.jpg?400|}}



===== ESP-12-E/Q =====
{{:esp-12-e2015-4-8_182428.jpg?300|}}

{{:esp-12_pindef.png?600|}}

{{:schematic_esp-12e.png?direct&600|}}

:!: **This reverse engineered schematic wrong in flash connection. Check table below ** :!:

**FLASH SDIO**
^ ESP Pin ^ Func ^ Alternate Functions ^ Flash pin ^ Err by bimbo385 ^
| 18 | SDIO\_DATA_2 | [SPIHD] |  pin 7 [!HOLD]  |  3(!WP [IO2])  |

| 19 | SDIO\_DATA_3 | [SPIWP] |  pin 3 [!WP]    |  7(!HOLD [IO3])  |

| 20 |  SDIO\_CMD     |  [SDIO\_CMD]  |  pin 1 [!CS]    | |    
| 21 |  SDIO\_CLK     |  [SPICLK]    |  pin 6 [CLK]    | | 
| 22 |  SDIO\_DATA_0  |  [SPIQ/MISO] |  pin 2 [DO]     |  5 (DI [IO0])  |

| 23 |  SDIO\_DATA_1  |  [SPID/MOSI] |  pin 5 [DI]     |  2 (DO [IO1])  |

FIXME Please, fix this table if it possible. FIXME 

===== ESP-12S =====
{{:esp-12s.png?300|}}

===== ESP-13 =====
{{:esp-13.jpg?300|}}

===== ESP-14 =====
{{esp8266-14_withshield.jpg?300 |The etching on the shield reads: 'STM8S003 INSIDE'}} The etching on the shield reads: 'STM8S003 INSIDE'

{{ esp8266-14_backside.jpg?300 |}}
Backside of the ESP8266-14 module.
The ESP8266-14 module has pins and connections on three sides of the board

{{ esp8266-14_shieldremoved.jpg?640 |}}
ESP8266-14 module with metal shield removed. Underneath the shield there is a 20-pin QFPN chip with the marking 'S033', which according to the STM8S003 datasheet is the proper device marking.

===== WT8266-S1 By Wireless-Tag =====
{{:wt8266-s1-1.jpg?600|}}

** CE of WT8266-S1 **

{{:wt8266_ce_certification.jpg?600|}}

** FCC of WT8266-S1 **

{{:wt8266_fcc_certification.jpg?600|}}

===== Modules Family =====
{{:esp_modules_front.jpg?600 |}}
{{:esp_modules_back.jpg?600 |}}

Modules shown here together with an external aerial, a large, cheap and poor quality development board together with a small, expensive and high quality development board.

===== Summary Table =====
^ Board ID ^ #Pins ^ Pitch ^ Form factor ^ LEDs ^ Antenna ^ Ant.Socket ^ Shielded ^ Dimensions mm ^ Flash Size in Bytes and (bits) ^
| ESP-01 | 8 | 0.1" | 2x4 DIL | Yes | Etched-on PCB | No | No | 14.3 x 24.8 | 512KB (4Mb) ×× |
| ESP-02 | 8 | 0.1" | 2x4 notch | No? | None | Yes | No | 14.2 x 14.2 | 512KB (4Mb) × |
| ESP-03 | 14 | 2mm | 2x7 notch | No | Ceramic| No | No | 17.3 x 12.1 | 512KB (4Mb) × |
| ESP-04 | 14 | 2mm | 2x4 notch | No? | None | No | No | 14.7 x 12.1 | 512KB (4Mb) × |
| ESP-05 | 5 | 0.1" | 1x5 SIL | No | None | Yes | No | 14.2 x 14.2 | 512KB (4Mb) × |
| ESP-06 | 12+GND | misc | 4x3 dice | No | None | No | Yes | 16.3 x 13.1 | 512KB (4Mb) × |
| ESP-07 | 16 | 2mm | 2x8 pinhole | Yes | Ceramic | Yes | Yes | 21.2 x 16.0 | 1MB (8Mb) ×× |
| ESP-07S | 16 | 2mm | 2x8 pinhole | No | None | Yes | Yes | 17.0 x 16.0 | 4MB (32Mb) |
| ESP-08 | 14 | 2mm | 2x7 notch | No | None | No | Yes | 17.0 x 16.0 | ?? //(please fill if you know)// |
| ESP-08 New | 16 | 2mm | 2x8 notch | No | None | No | Yes | 18.0 x 16.0 | ??  //(please fill if you know)// |
| ESP-09 | 12+GND | misc | 4x3 dice | No | None | No | No | 10.0 x 10.0 | 1MB (8Mb) |
| ESP-10 | 5 | 2mm //??// | 1x5 notch | No | None | No | No | 14.2 x 10.0 | 512KB (4Mb) * |
| ESP-11 | 8 | 1.27mm| 1x8 pinhole | No? | Ceramic | No | No | 17.3 x 12.1 | 512KB (4Mb) * |
| ESP-12 | 16 | 2mm | 2x8 notch | Yes | Etched-on PCB | No | Yes | 24.0 x 16.0 | 4MB (32Mb) //??// |
| ESP-12F | 22 | 2mm | 2x8 notch | Yes | Etched-on PCB | No | Yes | 24.0 x 16.0 | 4MB (32Mb) |
| ESP-12E | 22 | 2mm | 2x8 notch | Yes | Etched-on PCB | No | Yes | 24.0 x 16.0 | 4MB (32Mb) |
| ESP-12S | 16 | 2mm | 2x8 notch | Yes | Etched-on PCB | No | Yes | 24.0 x 16.0 | 4MB (32Mb) |
| ESP-13 | 18 | 1.5mm | 2x9 | ? | Etched-on PCB | No | Yes | 20.0 x 19.9 | 4MB (32Mb) |
| ESP-14 | 22 | 2mm | 2x8 + 6 | 1 | Etched-on PCB | No | Yes | 24.3 x 16.2  | ??  //(please fill if you know)// |
| ESP-201 | 22+4 | 0.1" | 2x11 + 4 | 2 | Etched-on PCB ××× | Yes | No | 33.5 x 25.5  | 512KB (4Mb) |
| WROOM-02 | 18 | 1.5mm | 2x9 | No | Etched on PCB | No | Yes | 20.0 x 18.0 | ??  //(please fill if you know)// |
| WT8266-S1 | 18 | 1.5mm | 3x6 | 1 | Etched on PCB | No | Yes | 15.0 x 18.6| 4MB (32Mb) |

**×   New firmwares can only be flashed on boards with at least 1MB (8Mb) flash.**
**××  May be different on different editions of the board.**
**××× Antenna connector is connected by default, to use PCB antenna switch (solder) the 0Ω resistor to the corresponding position.**

more products : [[http://wiki.ai-thinker.com/_media/esp8266/esp8266_module_list.png]]