BoardEspressif

ESP32-DevKitC

Official Espressif ESP32-DevKitC board record: V2/V4 revisions, 32E/32UE/VE/VIE ordering variants, WROVER GPIO16/17 condition, complete J2/J3 header mapping and every published field with its fixed official source.

Specifications

Specifications
Flash	4 MB · SKU ESP32-DevKitC-32E

Assembly & compatibility

Main chip: ESP32
Compatible module: ESP32-WROOM-32E
Compatible module: ESP32-WROOM-32UE
Compatible module: ESP32-WROVER-E
Compatible module: ESP32-WROVER-IE

Revisions

V2 (older version) — Older board generation assembled with ESP32-WROOM-32 modules; the official guide marks it superseded and links the V4 guide. · ESP32-DevKitC V2 User Guide (older version) · docs/en/esp32-devkitc/user_guide_v2.rst#L20-L25
V4 (current) — Current board with ESP32-WROOM-32E (ordering variants also 32UE, WROVER-E, WROVER-IE). Note on C15: earlier V4 boards may boot into Download mode or show GPIO0 clock disturbance due to component C15; Espressif's documented remedy is to remove the component. · ESP32-DevKitC V4 User Guide · docs/en/esp32-devkitc/user_guide.rst#L23-L34

Order codes

SKU	Flash	PSRAM
ESP32-DevKitC-32E	4 MB	—
ESP32-DevKitC-32UE	4 MB	—
ESP32-DevKitC-VE	8 MB	8 MB
ESP32-DevKitC-VIE	8 MB	8 MB

Pinout

power · ground · GPIO / signal · restricted (internal storage) · onboard LED

J2 (19 pins)

Name, Type and Function columns are transcribed from the official V4 header-block table. Type legend: P = power supply, I = input, O = output, G = ground. · Source: ESP32-DevKitC V4 User Guide · docs/en/esp32-devkitc/user_guide.rst#L94-L292

No.	Name	Type	GPIO	Function
1	3V3	P		3.3 V power supply
2	EN	I		CHIP_PU, Reset
3	VP	I	36	GPIO36, ADC1_CH0, S_VP
4	VN	I	39	GPIO39, ADC1_CH3, S_VN
5	IO34	I	34	GPIO34, ADC1_CH6, VDET_1
6	IO35	I	35	GPIO35, ADC1_CH7, VDET_2
7	IO32	I/O	32	GPIO32, ADC1_CH4, TOUCH_CH9, XTAL_32K_P
8	IO33	I/O	33	GPIO33, ADC1_CH5, TOUCH_CH8, XTAL_32K_N
9	IO25	I/O	25	GPIO25, ADC2_CH8, DAC_1
10	IO26	I/O	26	GPIO26, ADC2_CH9, DAC_2
11	IO27	I/O	27	GPIO27, ADC2_CH7, TOUCH_CH7
12	IO14	I/O	14	GPIO14, ADC2_CH6, TOUCH_CH6, MTMS
13	IO12	I/O	12	GPIO12, ADC2_CH5, TOUCH_CH5, MTDI
14	GND	G		Ground
15	IO13	I/O	13	GPIO13, ADC2_CH4, TOUCH_CH4, MTCK
16	D2	I/O	9	GPIO9, D2 (used internally for SPI flash communication)
17	D3	I/O	10	GPIO10, D3 (used internally for SPI flash communication)
18	CMD	I/O	11	GPIO11, CMD (used internally for SPI flash communication)
19	5V	P		5 V power supply

J3 (19 pins)

Same table as J2. IO16/IO17 (contacts 11-12) are usable only on boards assembled with ESP32-WROOM or ESP32-SOLO-1 modules; boards with ESP32-WROVER modules have the pins reserved for internal use (PSRAM) - see the gpio.occupied_by_internal_storage claim on the WROVER module entries. · Source: ESP32-DevKitC V4 User Guide · docs/en/esp32-devkitc/user_guide.rst#L94-L292

No.	Name	Type	GPIO	Function
1	GND	G		Ground
2	IO23	I/O	23	GPIO23
3	IO22	I/O	22	GPIO22
4	TX	I/O	1	GPIO1, U0TXD
5	RX	I/O	3	GPIO3, U0RXD
6	IO21	I/O	21	GPIO21
7	GND	G		Ground
8	IO19	I/O	19	GPIO19
9	IO18	I/O	18	GPIO18
10	IO5	I/O	5	GPIO5
11	IO17	I/O	17	GPIO17 (WROOM/SOLO-1 assemblies only; reserved for internal use on WROVER boards)
12	IO16	I/O	16	GPIO16 (WROOM/SOLO-1 assemblies only; reserved for internal use on WROVER boards)
13	IO4	I/O	4	GPIO4, ADC2_CH0, TOUCH_CH0
14	IO0	I/O	0	GPIO0, ADC2_CH1, TOUCH_CH1, Boot
15	IO2	I/O	2	GPIO2, ADC2_CH2, TOUCH_CH2
16	IO15	I/O	15	GPIO15, ADC2_CH3, TOUCH_CH3, MTDO
17	D1	I/O	8	GPIO8, D1 (used internally for SPI flash communication)
18	D0	I/O	7	GPIO7, D0 (used internally for SPI flash communication)
19	CLK	I/O	6	GPIO6, CLK (used internally for SPI flash communication)

The ESP32-DevKitC is Espressif's classic ESP32 evaluation board. The current V4 assembles an ESP32-WROOM-32E, -32UE, -WROVER-E or -WROVER-IE module on dual 19-pin headers (J2/J3), with a single micro-USB port through a USB-to-UART bridge (up to 3 Mbps), EN/Boot buttons and a 5 V power-on LED. This page renders the MCUID data record: revisions, ordering variants, the complete header mapping and every published field tied to a fixed official source.

Start developing

Bring-up — the first-flash guide covers ports, cables and the first blink step by step.
Chip capabilities and limits — the ESP32 chip page separates what the chip provides from what this board wires up.

Common questions this site answers

Also known as: esp32 devkitc, esp32-devkitc, esp32-devkitc-v4

No user-programmable onboard LED

Unlike the ESP32-S3-DevKitC-1 with its addressable RGB LED, the DevKitC V4 component list contains no user LED of any kind — only the 5 V power-on LED, which is not programmable. If you need a blink LED, wire one to a spare GPIO. There is also only one USB port (the UART bridge); the classic ESP32 has no native-USB connector on this board.

Pins to avoid

Two separate restrictions apply, both from the official header-block footnotes:

GPIO6-11 (D0, D1, D2, D3, CMD, CLK) — used internally for communication between the ESP32 and the SPI flash on every variant. Using them can disrupt flash/SPI RAM access. They render purple in the pinout above.
GPIO16/17 (J3 contacts 11/12) — usable only on boards assembled with ESP32-WROOM (or ESP32-SOLO-1) modules. On boards with ESP32-WROVER modules the pins are reserved for internal use: the WROVER's PSRAM wiring occupies them. Check your board's ordering variant before using them.

Boot mode and power

Hold BOOT, then press EN, to enter Firmware Download mode. Power comes from exactly one of three mutually exclusive paths — micro-USB (default), 5V+GND pins, or 3V3+GND pins; the official guide warns that back-powering through two paths at once can damage the board and/or the supply.

Note on C15 (early V4 boards)

On earlier V4 boards, component C15 can cause spurious boots into Download mode and clock disturbance on GPIO0. Espressif's documented remedy is to remove the component — see the V4 revision summary above for the fixed source.

Ordering variants at a glance

The V4 ordering variants in official notation: ESP32-DevKitC-32E and ESP32-DevKitC-32UE (WROOM-32E/-32UE, 4 MB flash, no PSRAM), ESP32-DevKitC-VE (WROVER-E, 8 MB flash + 8 MB PSRAM) and ESP32-DevKitC-VIE (WROVER-IE, 8 MB + 8 MB, external antenna connector). The variant decides whether GPIO16/17 are usable — see Pins to avoid above. The full variant table sits under ordering variants.

ESP32-S3 sibling

Looking for the S3 generation instead? See ESP32-S3-DevKitC-1 — it has a native USB OTG port in addition to the UART bridge, and a revision-dependent RGB LED (GPIO48 on v1.0, GPIO38 on v1.1).