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ESP-8266 By Espressif Systems

CE of ESP-WROOM-02

FCC of ESP-WROOM-02

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.

ESP-02

ESP-03

PinNameAlternate FunctionsNotes

1	GND
2	NC
3	UTXD	SPICS1, GPIO1, CLKRTC | Typically used as serial uart0 TX | | 4 | URXD | I2SODATA, GPIO3, CLKXTAL | Typically used as serial uart0 RX | | 5 | GPIO16 | XPDDCDC, RTCGPIO0, EXTWAKEUP, DEEPSLEEP	Connected to XPDDCDC ESP pin, can also be connected to ESP EXTRSTB (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 XPDDCDC pin that needs to be fed into EXTRSTB pin
6	CHPD| | 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, I2SIWS, SPCLK | | | 10 | GPIO12 | MTDI, I2SIDATA, MISO
11	GPIO13	MTCK, I2SIBCK, MOSI | | | 12 | GPIO15 | MTDO, I2SOBCK, SPCS | At boot: must be low to enter flash or normal boot (high enters special boot modes) | | 13 | GPIO2 | I2SOWS, 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

ESP-05

ESP-06

 not FCC approved (*) 

ESP-07

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

 not FCC approved (*) 

 under the can by Baoshi

  pinout of current 16 pin variant

  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

 not FCC approved (*) 

Two version of ESP-08 are on market one whit 7×2 pins (like one on picture) and probably new one with 8×2+ant pins (pinout is same like new 8×2 ESP-07)

ESP-09

ESP-10

ESP-11

 This does not appear to be the version 11 board picture . Pins are not at the right end

 

ESP-12

 not FCC approved(*) 

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

FCC of ESP-12

FCC ID: 2ADUIESP-12

 

CE of ESP-12

CE NUMBER: BCTC-141212468

ESP-12-E/Q

ESP-13

ESP-14

The etching on the shield reads: 'STM8S003 INSIDE'

Backside of the ESP8266-14 module. The ESP8266-14 module has pins and connection on three sides of the board

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

CE of WT8266-S1

FCC of WT8266-S1

Modules Family

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 IDpinspitchform factorLEDsAntennaAnt.SocketShieldeddimensions mm

ESP-01	8	.1“	2×4 DIL	Yes	Etched-on PCB	No	No	14.3 x 24.8
ESP-02	8	.1”	2×4 notch	No?	None	Yes	No	14.2 x 14.2
ESP-03	14	2mm	2×7 notch	No	Ceramic	No	No	17.3 x 12.1
ESP-04	14	2mm	2×4 notch	No?	None	No	No	14.7 x 12.1
ESP-05	5	.1“	1×5 SIL	No	None	Yes	No	14.2 x 14.2
ESP-06	12+GND	misc	4×3 dice	No	None	No	Yes	?
ESP-07	16	2mm	2×8 pinhole	Yes	Ceramic	Yes	Yes	20.0 x 16.0
ESP-08	14	2mm	2×7 notch	No	None	No	Yes	17.0 x 16.0
ESP-08 New	16	2mm	2×8 notch	No	None	No	Yes	18.0 x 16.0
ESP-09	12+GND	misc	4×3 dice	No	None	No	No	10.0 x 10.0
ESP-10	5	2mmm?	1×5 notch	No	None	No	No	14.2 x 10.0
ESP-11	8	1.27mm	1×8 pinhole	No?	Ceramic	No	No	17.3 x 12.1
ESP-12	16	2mm	2×8 notch	Yes	Etched-on PCB	No	Yes	24.0 x 16.0
ESP-12-E	22	2mm	2×8 notch	Yes	Etched-on PCB	No	Yes	24.0 x 16.0
ESP-13	18	1.5mm	2×9	?	Etched-on PCB	No	Yes	? x ?
ESP-14	22	2mm	2×8 + 6	1	Etched-on PCB	No	Yes	24.3 x 16.2
WROOM-02	18	1.5mm	2×9	No	Etched on PCB	No	Yes	20.0 x 18.0
WT8266-S1	18	1.5mm	3×6	1	Etched on PCB	No	Yes	15.0 x 18.6

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