ESP32

ESP32 is a series of low-cost, low-power system-on-chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. The ESP32 series employs either a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations, an Xtensa LX7 dual-core microprocessor, or a single-core RISC-V microprocessor and includes built-in antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power-management modules. Commonly found either on device specific PCBs or on a range of development boards with GPIO pins and various connectors depending on the model and manufacturer of the board.

ESP32

ESP-WROOM-32 module with ESP32-D0WDQ6 chip
Manufacturer	Espressif Systems
Type	Microcontroller
Release date	September 6, 2016 (2016-09-06)[1]
CPU	Tensilica Xtensa LX6 microprocessor @ 160 or 240 MHz
Memory	520 KiB SRAM
Power	3.3 V DC
Predecessor	ESP8266

ESP32 is created and developed by Espressif Systems, a Chinese company based in Shanghai, and is manufactured by TSMC using their 40 nm process.^[2] It is a successor to the ESP8266 microcontroller.

Features

ESP32 function block diagram.

ESP32 Die shot. Most of the chip is used by a power distribution network

Features of the ESP32 include the following:^[3]

• Processors:
  • CPU: Xtensa dual-core (or single-core) 32-bit LX6 microprocessor, operating at 160 or 240 MHz and performing at up to 600 DMIPS
  • Ultra low power (ULP) co-processor
• Memory: 520 KiB RAM, 448 KiB ROM
• Wireless connectivity:
  • Wi-Fi: 802.11 b/g/n
  • Bluetooth: v4.2 BR/EDR and BLE (shares the radio with Wi-Fi)
• Peripheral interfaces:
  • 34 × programmable GPIOs
  • 12-bit SAR ADC up to 18 channels
  • 2 × 8-bit DACs
  • 10 × touch sensors (capacitive sensing GPIOs)
  • 4 × SPI
  • 2 × I²S interfaces
  • 2 × I²C interfaces
  • 3 × UART
  • SD/SDIO/CE-ATA/MMC/eMMC host controller
  • SDIO/SPI slave controller
  • Ethernet MAC interface with dedicated DMA and planned IEEE 1588 Precision Time Protocol support^[4]
  • CAN bus 2.0
  • Infrared remote controller (TX/RX, up to 8 channels)
  • Pulse counter (capable of full quadrature decoding)
  • Motor PWM
  • LED PWM (up to 16 channels)
  • Ultra low power analog pre-amplifier
• Security:
  • IEEE 802.11 standard security features all supported, including WPA, WPA2, WPA3 (depending on version)^[5] and WLAN Authentication and Privacy Infrastructure (WAPI)
  • Secure boot
  • Flash encryption
  • 1024-bit OTP, up to 768-bit for customers
  • Cryptographic hardware acceleration: AES, SHA-2, RSA, elliptic curve cryptography (ECC), random number generator (RNG)
• Power management:
  • Internal low-dropout regulator
  • Individual power domain for RTC
  • 5 μA deep sleep current
  • Wake up from GPIO interrupt, timer, ADC measurements, capacitive touch sensor interrupt

ESP32-xx family

Since the release of the original ESP32, a number of variants have been introduced and announced. They form the ESP32 family of microcontrollers. These chips have different CPUs and capabilities, but all share the same SDK and are largely code-compatible. Additionally, the original ESP32 was revised (see ESP32 ECO V3, for example). See also https://gist.github.com/sekcompsci/2bf39e715d5fe47579fa184fa819f421

ESP32

• Xtensa single-/dual-core 32-bit LX6 microprocessor(s)
• Supports single-precision Floating Point Unit (FPU)
• Wi-Fi: 802.11 b/g/n
• Bluetooth: v4.2 BR/EDR and BLE (shares the radio with Wi-Fi)
• 34 × programmable GPIOs
• 12-bit SAR ADC up to 18 channels
• 2 x 8-bit DAC

ESP32-S2

• Single-core Xtensa LX7 CPU, up to 240 MHz (With ULP Co-Processor Running at 20Mhz)
• NO Floating Point Unit (no FPU)^[6]
• 320 KiB SRAM, 128 KiB ROM, and 16 KiB RTC SRAM
• Wi-Fi 2.4 GHz (IEEE 802.11b/g/n)^[7]
• No Bluetooth
• 43 programmable GPIOs^[7]
• 2 × 13-bit SAR ADCs, up to 20 channels
• USB OTG

ESP32-S3

• Dual-core Xtensa LX7 CPU, up to 240 MHz,^[8] and supporting single-precision FPU
  • Added instructions to accelerate machine learning applications
• 512 KiB SRAM, 384 KiB ROM, and 16 KiB RTC SRAM
• Capable of connecting to external PSRAM and Flash via Quad SPI or Octal SPI, and share the same 32 MiB address space
• Ultra-low power RISC-V (RV32IMC) coprocessor clocked at 17.5 MHz approximately
• Ultra-low power FSM coprocessor similar to previous ESP32 and ESP32-S2
• Wi-Fi 2.4 GHz (IEEE 802.11 b/g/n)^[9]
• Bluetooth 5 (LE)
• 45 programmable GPIOs
• No integrated Ethernet MAC
• 2 × 12-bit SAR ADCs, up to 20 channels
• USB OTG

ESP32-C2

• 32-bit RISC-V single-core processor that operates at up to 120 MHz, implementing RV32IMC ISA ^[10]
• State-of-the-art power and RF performance
• 576 KB ROM, 272 KB SRAM (16 KB for cache) on the chip
• 14 programmable GPIOs: SPI, UART, I2C, LED PWM controller, General DMA controller (GDMA), SAR ADC, Temperature sensor

ESP32-C3

NodeMCU board with an ESP32-C3-32S

• Single-core 32-bit RISC-V CPU, up to 160 MHz^[11]
• 400 KiB SRAM, 384 KiB ROM, and 8 KiB RTC SRAM
• Wi-Fi 2.4 GHz (IEEE 802.11b/g/n)^[12]
• Bluetooth 5 (LE)^[12]
• 22 / 16 programmable GPIOs
• 2 ADC-12bit
• Pin compatible with ESP8266

ESP32-C6

• High performance 32-bit RISC-V CPU, up to 160 MHz,^[13] implementing RV32IMAC
• Low power 32-bit RISC-V CPU, up to 20 MHz, implementing RV32IMAC
• 512 KiB SRAM and 320 KiB ROM
• IEEE 802.11ax (Wi-Fi 6) on 2.4 GHz, supporting 20 MHz bandwidth in 11ax mode, 20 or 40 MHz bandwidth in 11b/g/n mode
• IEEE 802.15.4 (Thread + Zigbee)
• Bluetooth 5.3 (LE)
• 30 (QFN40) / 22 (QFN32) programmable GPIOs

ESP32-H2

• Single-core 32-bit RISC-V CPU, up to 96 MHz
• 256 KB SRAM
• IEEE 802.15.4 (Thread + Zigbee)
• Bluetooth 5.3 (LE)
• No Wi-Fi support.
• 19 programmable GPIOs^[14]

Announced

ESP32-C5

• Single-core 32-bit RISC-V CPU, up to 240 MHz^[15]
• 384 KB SRAM and 320 KB ROM
• IEEE 802.11ax (Wi-Fi 6) on 2.4 and 5 GHz, supporting 20 MHz bandwidth in 11ax mode, 20 or 40 MHz bandwidth in 11b/g/n mode
• IEEE 802.15.4 (Thread + Zigbee)^[16]
• Bluetooth 5 (LE)
• > 20 programmable GPIOs

ESP32-P4

• High performance dual-core 32-bit RISC-V CPU, up to 400 MHz
  • Implementing RV32IMAFC_Zicsr_Zifencei and custom AI/vector instructions.
  • Supports single-precision Floating Point Unit (FPU).
• Low performance single-core 32-bit RISC-V CPU, up to 40 MHz
  • Implementing RV32IMAC_Zicsr_Zifencei ISA extensions.
• 768 KiB SRAM on high-performance core system.
• 8 KiB TCM on high-performance core system.
• 32 KiB SRAM on low-power subsystem.
• Support PSRAM.
• Integrated hardware accelerators for various media encoding protocols, including H.264.
• Wi-Fi and Bluetooth are not implemented.
  • If a wireless connection is required, it can be easily connected to the ESP32-C/S/H series.
• More than 50 programmable GPIOs^[17]

QFN packaged chip and module

ESP32 is housed in quad-flat no-leads (QFN) packages of varying sizes with 49 pads. Specifically, 48 connection pads along the sides and one large thermal pad (connected to ground) on the bottom.

Chips

The ESP32 system on a chip integrated circuit is packaged in both 6 mm × 6 mm and 5 mm × 5 mm sized QFN packages.

Series	Identifier	Processor cores	Processor speed (MHz)	Embedded flash memory (MiB)	Embedded PSRAM memory (MiB)	GPIOs	Package size	Description
ESP32
	ESP31B	2	240	0	0	34	6 mm×6 mm	Pre-release SoC used for beta testing; no longer available.
	ESP32-D0WDQ6	2	240	0	0	34	6 mm×6 mm	Initial production release chip of the ESP32 series. Not Recommended for New Designs (NRND).
	ESP32-D0WD	2	240	0	0	34	5 mm×5 mm	Smaller physical package variation similar to ESP32-D0WDQ6. Not Recommended for New Designs (NRND).
	ESP32-D0WDQ6-V3	2	240	0	0	34	6 mm×6 mm	Introduces some fixes to ESP32-D0WDQ6. Not Recommended for New Designs (NRND).
	ESP32-D2WD	2	160	2	0	34	5 mm×5 mm	2 MiB (16 Mibit) embedded flash memory variation. Removed. Not Recommended for New Designs (NRND).
	ESP32-S0WD	1	160	0	0	34	5 mm×5 mm	Single-core processor variation. Not Recommended for New Designs (NRND).
	ESP32-D0WD-V3	2	240	0	0	34	5 mm×5 mm	Introduces some fixes to ESP32-D0WD.
	ESP32-D0WDR2-V3	2	240	0	2	34	5 mm×5 mm
	ESP32-U4WDH	2	240	4	0	34	5 mm×5 mm	Single-core processor and 4 MiB (32 Mibit) embedded flash memory variation. Also 1 CPU 160MHz variant existed.
ESP32-S2
	ESP32-S2	1	240	0	0	43	7 mm×7 mm	With USB OTG.
	ESP32-S2R2	1	240	0	2	43	7 mm×7 mm	With USB OTG.
	ESP32-S2FH2	1	240	2	0	43	7 mm×7 mm	With USB OTG.
	ESP32-S2FH4	1	240	4	0	43	7 mm×7 mm	With USB OTG.
	ESP32-S2FN4R2	1	240	4	2	43	7 mm×7 mm	With USB OTG.
ESP32-S3
	ESP32-S3	2	240	0	0	45	7 mm×7 mm	With USB OTG. With 3.3V and 1.8V VDD_SPI voltage.
	ESP32-S3R2	2	240	0	2	45	7 mm×7 mm	With USB OTG.
	ESP32-S3R8	2	240	0	8	45	7 mm×7 mm	With USB OTG.
	ESP32-S3R8V	2	240	0	8	45	7 mm×7 mm	With USB OTG. With 1.8V VDD_SPI voltage.
	ESP32-S3FN8	2	240	8	0	45	7 mm×7 mm	With USB OTG.
	ESP32-S3FH4R2	2	240	4	2	45	7 mm×7 mm	With USB OTG.
ESP32-C2
	ESP8684H1	1	120	1	0	14	4 mm×4 mm	With Bluetooth 5.
	ESP8684H2	1	120	2	0	14	4 mm×4 mm	With Bluetooth 5.
	ESP8684H4	1	120	4	0	14	4 mm×4 mm	With Bluetooth 5.
ESP32-C3
	ESP32-C3	1	160	0	0	22	5 mm×5 mm	With Bluetooth 5.
	ESP32-C3FN4	1	160	4	0	22	5 mm×5 mm	Not Recommended for New Designs (NRND).
	ESP32-C3FH4	1	160	4	0	22	5 mm×5 mm	With Bluetooth 5.
	ESP32-C3FH4AZ	1	160	4	0	16	5 mm×5 mm	With Bluetooth 5. SPI0/SPI1 pins for flash connection are not bonded.
	ESP8686H4	1	-	4	0	-	4 mm×4 mm	Not released.
	ESP8685H2	1	160	2	0	15	4 mm×4 mm	With Bluetooth 5.
	ESP8685H4	1	160	4	0	15	4 mm×4 mm	With Bluetooth 5.
ESP32-C6
	ESP32-C6	1	160	0	0	30	5 mm×5 mm	With Wi-Fi 6 and Bluetooth 5.
	ESP32-C6FH4	1	160	4	0	22	5 mm×5 mm	With Wi-Fi 6 and Bluetooth 5.
ESP32-H2
	ESP32-H2FH2	1	96	2	0	19	4 mm×4 mm	With Bluetooth 5 and Bluetooth Mesh.
	ESP32-H2FH4	1	96	4	0	19	4 mm×4 mm	With Bluetooth 5 and Bluetooth Mesh.

In 2020, chips ESP32-D0WDQ6 and ESP32-D0WD also got a V3 version (ESP32 ECO V3), which fixes some of the bugs^[18] and introduces improvements over the previous versions.

Modules

The ESP32 PICO system in package modules combine an ESP32 silicon chip, crystal oscillator, flash memory chip, filter capacitors, and RF matching links into a single 7 mm × 7 mm sized QFN package.

The first released PICO was the ESP32-PICO-D4 with 2 CPUs at 240MHz, 4MiB internal flash, a 40MHz oscillator and 34 GPIOs.^[19]

Later, in 2020, the ESP32-PICO-V3 and ESP32-PICO-V3-02 modules were introduced both based on the ESP32 ECO V3 wafer.^{[20] [21]}

In 2022 the ESP32-S3-PICO-1 module was introduced with USB OTG and internal PSRAM.^[22]

Identifier	Processor cores	Processor speed (MHz)	Embedded flash memory (MiB)	Embedded PSRAM memory (MiB)	GPIOs	Package size	Description
ESP32-PICO-D4	2	240	4	0	34	7 mm×7 mm	Includes ESP32 chip, crystal oscillator, flash memory, filter capacitors, and RF matching links.[23]
ESP32-PICO-V3	2	240	4	0	31	7 mm×7 mm	Based on ESP32 with ECO V3 wafer.
ESP32-PICO-V3-02	2	240	8	2	29	7 mm×7 mm	Based on ESP32 with ECO V3 wafer.
ESP32-S3-PICO-1-N8R2	2	240	8	2	39	7 mm×7 mm	Includes USB OTG.
ESP32-S3-PICO-1-N8R8	2	240	8	8	39	7 mm×7 mm	Includes USB OTG.

Printed circuit boards

Surface-mount module boards

ESP32 based surface-mount printed circuit board modules directly contain the ESP32 SoC and are designed to be easily integrated onto other circuit boards. Meandered inverted-F antenna designs are used for the PCB trace antennas on the modules listed below. In addition to flash memory, some modules include pseudostatic RAM (pSRAM).

Vendor	Name	Antenna	Flash memory (MiB)	PSRAM (MiB)	Description
Espressif	ESP-WROOM-03	PCB trace	4	0	Discontinued. Limited distribution, pre-production module created by Espressif for beta testing purposes; this module used the ESP31B, the beta testing chip for the ESP32 series.[24][25][26][27][28] FCC Part 15.247 tested (FCC ID: 2AC7Z-ESP32).[29]
	ESP32-WROOM-32	PCB trace	4	0	First publicly available ESP32 module board created by Espressif.[30] FCC Part 15.247 tested (FCC ID: 2AC7Z-ESPWROOM32).[31] Based on ESP32-D0WDQ6 chip. Originally named "ESP-WROOM-32".
	ESP32-WROOM-32E	PCB trace	4,8,16	0	Same as ESP32-WROOM-32 but with the Eco V3 processor revisions[32]
	ESP32-WROOM-32D	PCB trace	4	0	Revision of the ESP-WROOM-32 module which uses an ESP32-D0WD chip instead of an ESP32-D0WDQ6 chip.[33] Originally named "ESP-WROOM-32D".
	ESP32-SOLO-1	PCB trace	4	0	Similar to the ESP32-WROOM-32D module, but uses the single-core ESP32-S0WD chip instead of the dual-core ESP32-D0WD.
	ESP32-WROOM-32U	U.FL socket	4	0	Alternative to the ESP-WROOM-32D module which has a U.FL connector for external antenna in lieu of a PCB trace antenna.[33]
	ESP32-WROVER	PCB trace	4	4	ESP32 module board with 4 MiB pSRAM created by Espressif. FCC part 15.247 tested (FCC ID 2AC7Z-ESP32WROVER). Uses 40 MHz crystal oscillator. Does not include U.FL connector. Based on ESP32-D0WDQ6 chip. Since June 2018, new modules have been upgraded to 8 MiB pSRAM.
	ESP32-WROVER-I	U.FL socket, PCB trace	4	4	Variation of ESP32-WROVER module configured to use an on-board U.FL compatible connector. PCB trace antenna not connected by default.
	ESP32-WROVER-B	PCB trace	4	8	Revision of ESP32-WROVER module with 8 MiB pSRAM (instead of 4 MiB pSRAM) operating at 3.3V (instead of 1.8V in previous versions) and ESP32-D0WD (instead of ESP32-D0WDQ6). FCC part 15.247 tested (FCC ID 2AC7Z-ESP32WROVERB). Does not include U.FL connector. (Custom order option for flash capacity of 8 MiB or 16 MiB also available.)
	ESP32-WROVER-IB	U.FL socket, PCB trace	4	8	Variation of ESP32-WROVER-B module configured to use an on-board U.FL compatible connector. PCB trace antenna not connected by default.
	ESP32-WROVER-E	PCB trace	4,8,16	2,8	Revision of ESP32-WROVER module with 2 or 8 MiB pSRAM (instead of 4 MiB pSRAM) operating at 3.3V (instead of 1.8V in previous versions) and ESP32-D0WD-V3, or in 2MB pSRAM models, ESP32-D0WDR2-V3. FCC part 15.247 tested (FCC ID 2AC7Z-ESP32WROVERE). Does not include U.FL connector. (Custom order option for flash capacity of 2 MiB, 8 MiB, or 16 MiB also available.)[34]
	ESP32-WROVER-IE	U.FL socket, PCB trace	4,8,16	2,8	Variation of ESP32-WROVER-E module configured to use an on-board U.FL compatible connector. PCB trace antenna not connected by default.
	ESP32-PICO-V3-ZERO	PCB trace	4	0	Based on ESP32-PICO-V3 SiP. It is designed as a module for Alexa Connect Kit (ACK) and connecting with Amazon Alexa.
Ai-Thinker	ESP32-S	PCB trace	4	0	Ai-Thinker's equivalent to Espressif's ESP-WROOM-32 module. (Same form factor and general specifications.)[35] Previously branded as "ESP-32S" with the hyphen before "32S", the initial release of the ESP-32S module replaced the previously announced, but never released, ESP3212 module.
	ESP32-A1S	U.FL socket, PCB trace	8	4	Contains an extra AC101 audio codec IC whose IO-pins (line, mic, etc.) are led to the board pins. Comes separately or soldered onto a corresponding audio development board ("ESP32-Audio-Kit").[36][37][38]
AnalogLamb	ESP-32S-ALB	PCB trace	4	0	Clone of the ESP-32S module (ESP-WROOM-32 compatible footprint). Seen with a green solder mask coating.[39]
	ALB-WROOM	PCB trace	16	0	Variation of ESP-32S-ALB with 16 MiB of flash memory.[39]
	ALB32-WROVER	PCB trace	4	4	ESP32 module board with 4 MiB pSRAM with the same footprint as the ESP-WROOM-32 module.[40]
DFRobot	ESP-WROOM-32	PCB trace	4	0	Module board similar to Espressif Systems's ESP-WROOM-32, but is not FCC certified, and uses 26 MHz or 32 kHz crystal oscillator.[41]
eBox & Widora	ESP32-Bit	Ceramic, U.FL socket	4	0	Module has a ceramic antenna and an U.FL antenna connector. This module has a different footprint than the ESP-WROOM-32/ESP-32S modules.
Goouuu Tech	ESP-32F	PCB trace	4	0	Module board similar to Espressif Systems's ESP-WROOM-32. FCC certified (ID 2AM77-ESP-32F).
IntoRobot	W32	PCB trace	4	0	Module similar in appearance to Espressif's ESP-WROOM-32, but footprint pinout differs.[42]
	W33	Ceramic, U.FL socket	4	0	Differs from IntoRobot W32 module in its antenna configuration.
ITEAD	PSH-C32	PCB trace	1[43]	0	Module has unusually small flash memory on board. Also, footprint is unique and differs from all other ESP32 modules.[44]
Pycom[45]	W01	(Not included.)	8	4	OEM module version of the WiPy 2.0. Supports Wi-Fi and Bluetooth. FCC ID 2AJMTWIPY01R.
	L01	(Not included.)	8	4	OEM module version of the LoPy. Supports Wi-Fi, Bluetooth, and LoRa. FCC ID 2AJMTLOPY01R.
	L04	(Not included.)	8	4	OEM module version of the LoPy4. Supports Wi-Fi, Bluetooth, LoRa, and Sigfox.
	S01	(Not included.)	8	4	Discontinued. OEM module version of the SiPy. Supports Wi-Fi, Bluetooth, and Sigfox (14 dBm and 22 dBm).
	G01	(Not included.)	8	4	OEM module version of the GPy. Supports Cellular LTE-CAT M1/NB1, Wi-Fi and Bluetooth.
u-blox	NINA-W131	(Not included.)	2	0	Belongs to the u-blox NINA-W13 series of Wi-Fi modules.[46]
	NINA-W132	PIFA	2	0	Belongs to the u-blox NINA-W13 series of Wi-Fi modules.[46] On board planar inverted-F antenna (PIFA) is shaped (cut & bent) metal, not a PCB trace.

Development and other boards

SparkFun Thing Plus - ESP32 WROOM

Development and break-out boards extend wiring and may add functionality, often building upon ESP32 module boards and making them easier to use for development purposes, especially with breadboards.

Vendor	Name	Surface-mount module used	Description
Espressif	ESP_Module_Testboard	ESP-WROOM-03	Break-out board included with ESP-WROOM-03 beta modules.[24][25]
	ESP32_Demo Board_V2	ESP-WROOM-32	Development & demonstration board created by Espressif.[47][48]
	ESP32-DevKitC	ESP32-WROOM-32, v4 comes with ESP32-WROOM-DA(Dual Antenna), ESP32-WROVER or ESP32-Solo (Single core variant)	Compact development board created by Espressif.[49] Silkscreen labeling on PCB reads "Core Board".
	ESP-WROVER-KIT	ESP-WROOM-32 or ESP32-WROVER	Large development board created by Espressif.[50] Previously named ESP32-DevKitJ.[51]
	ESP32-PICO-KIT	ESP32-PICO-D4	Small development board with micro usb and two header rows of 17 pins. FCC ID 2AC7Z-ESP32PICOKIT.
Adafruit	HUZZAH32	ESP-WROOM-32	Also referred to as the "ESP32 Feather Board", the HUZZAH32 is a compact development board/module that is compatible with the Adafruit Feather family of products.
Ai-Thinker	NodeMCU-32S	ESP-32S	NodeMCU-like development board.[52]
	ESP32-CAM	ESP32-S	Compact (27 mm x 40.5 mm) board with ribbon cable Camera Serial Interface with support for 1600 x 1200 pixel OV2640 or 640 x 480 OV7670 camera. Has 9 usable IO pins and microSD card slot.[53]
AnalogLamb	ESP32 Development Board	ESP-32S-ALB or ALB-WROOM	Development board similar to Espressif's ESP32-DevKitC with on board a CP2102 USB/serial bridge. 4 MiB variation uses ESP-32S-ALB; 16 MiB variation uses ALB-WROOM module.[54]
	Maple ESP32	ESP-32S-ALB	Development board with Arduino-style connections and CP2104 USB/serial interface.[55]
April Brother	ESPea32	†	Development board with perfboard area that may be optionally cut-off.
ArduCAM	ESP32 UNO	ESP-32S	Arduino Uno-like development board based on ESP32 IoT UNO framework with support for SPI ArduCAM, battery pins and uSD card slot.[56]
Arduino	Arduino Nano ESP32	U-Blox NORA-W106-10B (based on ESP32-S3 IC)	Arduino Nano footprint
Banana pi	BPI:bit	ESP-32S	a development for Webduino and Arduino
	BPI-UNO32	ESP32-S	a development board for Arduino
DoIT	ESPduino32	ESP-WROOM-32	Full-featured Arduino Uno-like development board compatible with Arduino Shields. It also adds additional SPI & IO pins. The board is a clone of WeMos D1 R32 with a USB Type B socket.
	ESP32 DEVKIT V1	ESP-WROOM-32	The ESP32 DevKit V1 is probably the most popular among hobbyists and educators for its ease of use and versatility in various electronic projects. The pinout[57] It's one of the most copied.
EzSBC	ESP32-01 Breakout and Development Board	ESP-WROOM-32	Full-featured development board with two tri-color LEDs and fits on a breadboard.
Gravitech & MakerAsia	Nano32	†	Development board that directly incorporates the ESP32 chip.
HydraBus	HydraESP32	ESP-WROOM-32 or ESP-32S	HydraESP32 HydraBus v1.1 Rev1 shield/breakout board for ESP-WROOM-32 or ESP-32S. This shield can be used with or without a HydraBus board.
Noduino	Quantum	†	Arduino-style development board that directly incorporates the ESP32 chip.
Olimex	ESP32-Gateway	ESP32-WROOM32	Wi-Fi/Bluetooth/Ethernet
	ESP32-DevKit-LiPo	ESP32-WROOM-32	pin compatible with ESP32-CoreBoard, but adds Lipo charger and ability to work on LiPo.
	ESP32-POE-ISO	ESP32-WROOM-32/UE	Wi-Fi/Bluetooth/Ethernet development board with Power over Ethernet and 2W of isolated DC power
	ESP32-POE	ESP32-WROOM-32	Wi-Fi/Bluetooth/Ethernet development board with Power over Ethernet
	ESP32-PRO	†	Wi-Fi/Bluetooth and PIC32MX270F256DT microcontroller and 32 Mb SPI flash and 32 Mb PSRAM. ESP32-PRO-C includes external crypto engine with ATECC508A
	ESP32-EVB	ESP32-WROOM32	Wi-Fi/Bluetooth/Ethernet development board with MicroSD, CAN, IR, LiPo, and two relays.
	ESP32-ADF	ESP32-WROVER-B	audio development framework board with stereo microphones, speakers, audio output jack.
Pycom	WiPy	†	MicroPython programmable Wi-Fi & Bluetooth IoT development platform with a 1 km Wi-Fi range. WiPy versions 2.0 and 3.0 use ESP32.
	LoPy	†	Triple network Pycom board featuring LoRa, Wi-Fi (1 km range), and BLE.
	LoPy4	?	Quadruple network Pycom board featuring LoRa, Sigfox, Wi-Fi (1 km range), and BLE.
	SiPy	†	Triple network Pycom board featuring Sigfox, Wi-Fi (1 km range), and BLE.
	GPy	†	Triple network Pycom board featuring LTE-M, Wi-Fi (1 km range), and BLE.
	FiPy	†	Quintuple network Pycom board featuring LTE-M, LoRa, Sigfox, Wi-Fi (1 km range), and BLE.
SparkFun	ESP32 Thing	†	Compact development board with FTDI FT231x USB/serial interface and LiPo charger built-in.
SunDUINO	ESP32 MiniBoard	ESP-WROOM-32	Breakout compatible with the Espressif ESP32-DevKitC. Lacks on-board USB-UART.
	ESP32 MiniBoard v2	ESP32-Wrover-B/IB	Breakout board with Silabs CP2102, battery charger. Compatible with Espressif DEVkit.
	ESP32 SunDUINO	ESP-WROOM-32 or ESP-32S	Arduino-style development board. Lacks on-board USB-UART.
SwitchDoc Labs	BC24	ESP-WROOM-32	ESP32 Breakout with 24 SK6812RGBW LEDs with Grove Connectors for easy prototyping. Comes with USB-UART and Feather compatible pinout.[58]
Watterott	ESP-WROOM32-Breakout	ESP-WROOM-32	Breakout which is compatible with the Espressif ESP32-DevKitC.
WEMOS[59]	LOLIN32 [Retired][60]	ESP-WROOM-32
	LOLIN32 Lite [Retired][61]	†	ESP32-D0WDQ6
	LOLIN32 Pro [Retired][62]	ESP32-WROVER	MicroSD card slot (supports SD and SPI mode)
	LOLIN D32[63]	ESP-WROOM-32
	LOLIN D32 Pro[64]	ESP32-WROVER	I2C port, TFT port and Micro SD Card slot (support SPI mode)
Widora	Air	†	Compact ESP32 development board.
MagicBit	Magic Bit Core	ESP-WROOM-32	Compact ESP32 development board with displays and several sensors onboard to make learning embedded development convenient.

† ESP32 SoC incorporated directly onto development board; no module board used.

Programming

Programming languages, frameworks, platforms, and environments used for ESP32 programming:

• ESP-IDF^[65][66] – Espressif’s official IoT Development Framework for the ESP32, ESP32-S, ESP32-C and ESP32-H series of SoCs.
• Arduino-ESP32^[67] – Arduino core for the ESP32, ESP32-S2, ESP32-S3 and ESP32-C3.
• Espruino – JavaScript SDK and firmware closely emulating Node.js
• MicroPython (and CircuitPython) – lean implementation of Python 3 for microcontrollers
• Mongoose OS – an operating system for connected products on microcontrollers; programmable with JavaScript or C. A recommended platform by Espressif Systems,^[68] AWS IoT,^[69] and Google Cloud IoT.^[70]
• mruby for the ESP32
• NodeMCU – Lua-based firmware
• Rust^[71][72]
• Swift^[73][74]
• Visual Studio Code with the officially supported Espressif Integrated Development Framework (ESP-IDF) Extension^[75]
• Zerynth – Python for IoT and microcontrollers, including the ESP32
• Matlab Simulink

Reception and use

Commercial, industrial and academic uses of ESP32:

Use in commercial devices

• Alibaba Group's IoT LED wristband, used by participants at the group's 2017 annual gathering. Each wristband operated as a "pixel", receiving commands for coordinated LED light control, allowing formation of a "live and wireless" screen.^[76]
• DingTalk's M1, a biometric attendance-tracking system.^[77]
• LIFX Mini, a series of remotely controllable, LED based light bulbs.^[78]
• Pium, a home fragrance and aromatherapy device.^[79]
• HardKernel's Odroid Go, an ESP32 based handheld gaming device kit made to commemorate Odroid's 10th anniversary.^[80]
• Playdate, a handheld video game console jointly developed by Panic Inc. and Teenage Engineering.
• Octopus Energy Mini, an ESP32-C6 based real-time energy monitor.^[81]

Use in industrial devices

• TECHBASE's Moduino X series X1 and X2 modules are ESP32-WROVER / ESP32-WROVER-B based computers for industrial automation and monitoring, supporting digital inputs/outputs, analog inputs, and various computer networking interfaces.^[82]
• NORVI IIOT Industrial Devices with ESP32-WROVER / ESP32-WROVER-B SOC for industrial automation and monitoring with digital inputs, analog inputs, relay outputs and multiple communications interfaces. Supports LoRa and Nb-IoT as expansion modules.^[83]

Academic uses

• ESP32 devices are utilized in educational settings ^[84] and academic research projects. For example, these devices have been used to develop a smart home system designed to monitor and control the charging of electric vehicles, considering the current consumption of other electrical appliances and the contracted power capacity. ^[85]

See also

• Internet of things

References

1. "Espressif Announces the Launch of ESP32 Cloud on Chip and Funding by Fosun Group". Espressif Systems. 2016-09-07. Retrieved 2021-03-29.
2. "ESP32 Overview". Espressif Systems. Retrieved 2016-09-01.
3. "ESP32 Datasheet" (PDF). Espressif Systems. 2017-03-06. Retrieved 2017-03-14.
4. "IEEE 1588 (PTP) Support (IDFGH-110) #1223". Espressif. 7 November 2021.
5. "Certificates | Espressif Systems". www.espressif.com. Retrieved 2021-08-07.
6. Landsmeer, Lennart (2021-04-08). "No, the ESP32-S2 is not faster at floating point operations (and how do you actually speed up division on the ESP32?)". The Weekend Writeup.
7. "ESP32-S2_datasheet" (PDF). Espressif. 2021-06-02.
8. Lewis, James (2021-01-01). "Espressif's New ESP32-S3 Adds AI Features for IoT Devices".
9. "ESP32-S3".
10. https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf ^{[bare URL PDF]}
11. List, Jenny (2020-11-22). "Espressif Leaks ESP32-C3: A WiFi SOC That's RISC-V and is ESP8266 Pin-Compatible". Hackaday.
12. "ESP32-C3 Datasheet" (PDF).
13. "Announcing ESP32-C6, a Wi-Fi 6 + Bluetooth 5 (LE) SoC" (Press release). Espressif. 2021-04-09. Retrieved 2021-04-22.
14. "Announcing ESP32-H2, an IEEE 802.15.4 + Bluetooth 5 (LE) RISC-V SoC | Espressif Systems". www.espressif.com. Retrieved 2022-01-27.
15. "Introducing ESP32-C5: Espressif's first Dual-Band Wi-Fi 6 MCU" (Press release). Espressif. 2022-06-20.
16. "ESP32-C5 2.4 and 5 GHz Dual-band Wi-Fi 6 MCU". www.espressif.com. Retrieved 12 September 2024.
17. "Espressif Reveals ESP32-P4: A High-Performance MCU with Numerous IO-Connectivity and Security Features | Espressif Systems". www.espressif.com. Retrieved 2023-01-08.
18. Espressif (2020-09-25). "Eco workarounds and bugs in ESP32" (PDF). Retrieved 2022-04-06.
19. "ESP32-PICO-D4 Datasheet (v.2.0)" (PDF). Espressif. April 2022.
20. "ESP32-PICO-V3 Datasheet (v.1.3)" (PDF). Espressif. 29 March 2022.
21. "ESP32-PICO-V3-02 Datasheet (v.1.0)" (PDF). Espressif. 1 September 2021.
22. "ESP32-S3-PICO-1 (v.1.0)" (PDF). Espressif. 21 August 2023.
23. Espressif Systems (2017-08-21). "ESP32-PICO-D4 Datasheet" (PDF). Retrieved 2017-07-21.
24. Jim Lindblom (2016-01-21). "Enginursday: First Impressions of the ESP32". Sparkfun Electronics. Retrieved 2016-09-01.
25. Limor Fried (2015-12-22). Playing With New ESP32 Beta Module. Adafruit Industries. Retrieved 2016-09-02.
26. Martin Harizanov (2015-12-18). "ESP32". Retrieved 2016-09-02.
27. Brian Benchoff (2015-12-23). "The ESP32 Beta Units Arrive". Hackaday. Retrieved 2016-09-02.
28. Markus Ulsass (2015-12-25). "ESP32 beta module HiRes pictures". Retrieved 2016-09-02.
29. "FCC Part 15.247 Test Report for Espressif Systems (Shanghai) Pte. Ltd". Bay Area Compliance Laboratories Corp. 2016-02-17. Retrieved 2016-09-02.
30. "ESP-WROOM-32 Datasheet" (PDF). Espressif Systems. 2016-08-22. Archived from the original (PDF) on 2016-09-13. Retrieved 2016-09-02.
31. "FCC Part 15.247 Test Report for Espressif Systems (Shanghai) Pte. Ltd". Bay Area Compliance Laboratories Corp. 2016-11-10. Retrieved 2016-12-15.
32. "ESP32 modules". Espressif Systems. Retrieved 2022-04-06.
33. "ESP-WROOM-32D/ESP32-WROOM-32U Datasheet" (PDF). Espressif Systems. Archived from the original (PDF) on 2017-12-03. Retrieved 2017-11-28.
34. "ESP32-WROVER-E & ESP32-WORVER-IE Datasheet" (PDF). Espressif Systems. 2023-02-19. Retrieved 2023-03-18.
35. Baoshi (2016-10-11). "Ai-Thinker ESP-32S Decap Photos". Retrieved 2016-10-22.
36. "ESP32-A1S Product Specification" (PDF). Retrieved 2021-03-24.
37. "ESP32 series module topic". Retrieved 2021-03-24.
38. "Seeed Drops New ESP32-Audio Development Kit for Audio-Related IoT Projects". Retrieved 2021-03-24.
39. "ESP-32S-ALB/ALB-WROOM". AnalogLamb. Archived from the original on 2017-07-20. Retrieved 2017-10-08.
40. "ALB32-WROVER is an ESP-WROOM-32 Compatible Module with 32 Mbit PSRAM, up to 128 Mbit Flash". CNXSoft. 9 March 2018.
41. "(SKU:TEL0111)ESP32 WiFi&Bluetooth Module/ESP-WROOM-32". DFRobot.
42. "硬件功能 (Hardware Function)". IntoRobot. Archived from the original on 2018-05-30. Retrieved 2017-10-02.
43. ITEAD (2017-02-15). "PSH-C32 Schematic" (PDF). Retrieved 2017-02-23.
44. ITEAD. "PSH-C32". Retrieved 2017-02-23.
45. Pycom. "Pycom OEM Products". Retrieved 2017-03-14.
46. "NINA-W13 series". u-blox.
47. William Hooi (2016-09-01). "So looking forward…". Retrieved 2016-09-02.
48. Aditya Tannu (2016-09-02). "Look what I just got!". Retrieved 2016-09-02.
49. "ESP32-DevKitC Getting Started Guide". Espressif Systems. 2016-09-21. Retrieved 2016-09-21.
50. "ESP-WROVER-KIT". Espressif Systems. Retrieved 2017-02-19.
51. "ESP32 Camera Demo". Ivan Grokhotkov. 2016-11-28. Retrieved 2016-12-02.
52. ESP32.net (2016-10-28). "Ai-Thinker NodeMCU-32S Development Board Appears on AliExpress". Retrieved 2016-10-28.{{cite web}}: CS1 maint: numeric names: authors list (link)
53. "ESP32-CAM camera development board | 安信可科技". docs.ai-thinker.com. Retrieved 2022-07-05.
54. "ESP32 Development Board – Developer Edition". AnalogLamb. Archived from the original on 2020-09-20. Retrieved 2017-10-08.
55. "Maple ESP32 – ESP32 Board with Micro SD Interface, USB to USART & Compatible with Arduino Interface". AnalogLamb. Archived from the original on 2020-09-18. Retrieved 2017-10-08.
56. ESP32 UNO by ArduCam (9 August 2019). "Arduino Uno-like development board".{{cite web}}: CS1 maint: numeric names: authors list (link)
57. "DOIT ESP32 DEV KIT v1 high-resolution pinout and specs". Mischianti. 17 February 2021.
58. "BC24 / ESP32 Development Board – Big Circle 24". SwitchDoc Labs. Archived from the original on 2021-05-08. Retrieved 2018-06-26.
59. "Products [WEMOS Electronics]". Archived from the original on 2018-01-25. Retrieved 2018-01-25.
60. "LOLIN32 (Retired) [WEMOS Electronics]". wiki.wemos.cc. Archived from the original on 2018-11-14. Retrieved 2018-11-13.
61. "LOLIN32 Lite (Retired) [WEMOS Electronics]". wiki.wemos.cc. Archived from the original on 2018-11-14. Retrieved 2018-11-13.
62. "LOLIN32 Pro (Retired) [WEMOS Electronics]". wiki.wemos.cc. Archived from the original on 2018-11-14. Retrieved 2018-11-13.
63. "D32 [WEMOS Electronics]". wiki.wemos.cc. Archived from the original on 2018-11-14. Retrieved 2018-11-13.
64. "D32 Pro [WEMOS Electronics]". wiki.wemos.cc. Archived from the original on 2018-11-14. Retrieved 2018-11-13.
65. "IoT Development Framework I Espressif Systems". www.espressif.com. Retrieved 2023-08-29.
66. Espressif IoT Development Framework, Espressif Systems, 2023-08-29, retrieved 2023-08-29
67. Arduino core for the ESP32, ESP32-S2, ESP32-S3 and ESP32-C3, Espressif Systems, 2023-08-28, retrieved 2023-08-29
68. "Third-Party Platforms That Support Espressif Hardware". Espressif Systems. Retrieved 2017-10-20.
69. Tim Mattison (2017-04-13). "AWS IoT on Mongoose OS, Part 1".
70. "Google Cloud IoT Partners". Retrieved 2017-10-20.
71. Hiari, Omar (29 June 2023). "ESP32 and Rust Make a Winning Combination". Apollo Labs Tech Blog. Apollo Labs. Retrieved 29 June 2023.
72. "The Rust on ESP Book". Rust on ESP Community (Github). Retrieved 29 June 2023.
73. "Get Started with Embedded Swift on ARM and RISC-V Microcontrollers". Swift.Org. Retrieved 10 October 2024.
74. "A Vision for Embedded Swift". GitHub. Retrieved 10 October 2024.
75. "Getting Started with VS Code IDE - ESP32 - — ESP-IDF Programming Guide latest documentation". docs.espressif.com. Retrieved 2021-10-29.
76. "Alibaba's IoT Wrist Bands Based on ESP32". 2017-09-30. Archived from the original on 29 March 2019.
77. "DingTalk's New Biometric Attendance Monitor Based on ESP32". Espressif Systems. 2017-06-02.
78. @ESP32net (2017-11-07). "FCC internal photos exhibit for the LIFX Mini Wi-Fi LED light (FCC ID 2AA53-MINI) show inclusion of ESP32…" (Tweet) – via Twitter.
79. "New ESP32-based Aromatherapy Device". Espressif Systems. 2017-07-31.
80. "ODROID | Hardkernel". 2018-07-06. Archived from the original on 2018-07-06. Retrieved 2018-07-06.
81. "Octopus Home Mini FAQ". Octopus Energy. Retrieved 2023-07-29.
82. "Moduino X Series - Industrial IoT module based on ESP32". TECHBASE Group.
83. "NORVI IIoT - Industrial Controllers based on ESP32". ICONIC DEVICES Ltd.
84. "ME 100: Electronics for the Internet of Things". Retrieved 2024-04-23.
85. Ruben E. Figueiredo; Vitor Monteiro; Joao C. Ferreira; Joao L. Afonso; Jose A. Afonso (2021). "Smart home power management system for electric vehicle battery charger and electrical appliance control". International Transactions on Electrical Energy Systems. 31 (4). doi:10.1002/2050-7038.12812. hdl:1822/82969.

External links

• Espressif ESP32 Overview
• Espressif ESP32 Resources
• Espressif ESP-IDF Programming Guide
• Espressif ESP32 Forums