ESP32 DevKit v1

ESP32 DevKit v1 development board for Wi-Fi/Bluetooth microcontroller projects. Exposes ESP32-WROOM GPIO through breadboard-friendly headers, supports USB serial programming, 3.3V logic, common I2C/SPI/UART peripherals, and is the default ESP32-style board for many Schematik…

Logical pinout · physical placement not verified

VINleft-1
Input to the onboard 3.3V regulator. Do not drive VIN and 3V3 simultaneously.
Type · PowerVoltage · 5V nominal (4-12V)
GNDleft-2
Ground return.
Type · GroundVoltage · 0V
GPIO13left-3
GPIO13, ADC2_CH4, Touch T4, HSPI MOSI, JTAG MTCK.
Type · GPIO
GPIO12left-4
GPIO12, ADC2_CH5, Touch T5, HSPI MISO, JTAG MTDI.
Type · GPIO
GPIO14left-5
GPIO14, ADC2_CH6, Touch T6, HSPI CLK, JTAG MTMS.
Type · GPIO
GPIO27left-6
GPIO27, ADC2_CH7, Touch T7.
Type · GPIO
GPIO26left-7
GPIO26, ADC2_CH9, DAC2.
Type · GPIO
GPIO25left-8
GPIO25, ADC2_CH8, DAC1.
Type · GPIO
GPIO33left-9
GPIO33, ADC1_CH5, Touch T8, 32K_XN.
Type · GPIO
GPIO32left-10
GPIO32, ADC1_CH4, Touch T9, 32K_XP.
Type · GPIO
GPIO35left-11
GPIO35, ADC1_CH7, VDET_2. Input only.
Type · GPIO
GPIO34left-12
GPIO34, ADC1_CH6, VDET_1. Input only.
Type · GPIO
GPIO39left-13
GPIO39, ADC1_CH3, SENSOR_VN. Input only.
Type · GPIO
GPIO36left-14
GPIO36, ADC1_CH0, SENSOR_VP. Input only.
Type · GPIO
ENleft-15
Active-high chip enable. Pulling LOW resets the ESP32. Internally pulled up; the EN button drives it LOW.
Type · Control
3V3right-1
Output of the onboard regulator; may be used as a 3.3V input instead of VIN, but never both.
Type · PowerVoltage · 3.3V
GNDright-2
Ground return.
Type · GroundVoltage · 0V
GPIO15right-3
GPIO15, ADC2_CH3, Touch T3, HSPI CS, JTAG MTDO.
Type · GPIO
GPIO2right-4
GPIO2, ADC2_CH2, Touch T2, onboard LED on this board.
Type · GPIO
GPIO4right-5
GPIO4, ADC2_CH0, Touch T0.
Type · GPIO
GPIO16right-6
GPIO16, UART2 RX (Serial2 default).
Type · GPIO
GPIO17right-7
GPIO17, UART2 TX (Serial2 default).
Type · GPIO
GPIO5right-8
GPIO5, VSPI CS0 (SPI default SS).
Type · GPIO
GPIO18right-9
GPIO18, VSPI CLK (SPI default SCK).
Type · GPIO
GPIO19right-10
GPIO19, VSPI Q (SPI default MISO / CIPO).
Type · GPIO
GPIO21right-11
GPIO21, default Arduino Wire I2C SDA.
Type · GPIO
GPIO3right-12
GPIO3, UART0 RX. Wired to the onboard CP2102 USB-UART.
Type · GPIO
GPIO1right-13
GPIO1, UART0 TX. Wired to the onboard CP2102 USB-UART.
Type · GPIO
GPIO22right-14
GPIO22, default Arduino Wire I2C SCL.
Type · GPIO
GPIO23right-15
GPIO23, VSPI D (SPI default MOSI / COPI).
Type · GPIO

Pin	Position	Type	Function	Voltage
VIN	left-1	Power	Input to the onboard 3.3V regulator. Do not drive VIN and 3V3 simultaneously.	5V nominal (4-12V)
GND	left-2	Ground	Ground return.	0V
GPIO13	left-3	GPIO	GPIO13, ADC2_CH4, Touch T4, HSPI MOSI, JTAG MTCK.
GPIO12	left-4	GPIO	GPIO12, ADC2_CH5, Touch T5, HSPI MISO, JTAG MTDI.
GPIO14	left-5	GPIO	GPIO14, ADC2_CH6, Touch T6, HSPI CLK, JTAG MTMS.
GPIO27	left-6	GPIO	GPIO27, ADC2_CH7, Touch T7.
GPIO26	left-7	GPIO	GPIO26, ADC2_CH9, DAC2.
GPIO25	left-8	GPIO	GPIO25, ADC2_CH8, DAC1.
GPIO33	left-9	GPIO	GPIO33, ADC1_CH5, Touch T8, 32K_XN.
GPIO32	left-10	GPIO	GPIO32, ADC1_CH4, Touch T9, 32K_XP.
GPIO35	left-11	GPIO	GPIO35, ADC1_CH7, VDET_2. Input only.
GPIO34	left-12	GPIO	GPIO34, ADC1_CH6, VDET_1. Input only.
GPIO39	left-13	GPIO	GPIO39, ADC1_CH3, SENSOR_VN. Input only.
GPIO36	left-14	GPIO	GPIO36, ADC1_CH0, SENSOR_VP. Input only.
EN	left-15	Control	Active-high chip enable. Pulling LOW resets the ESP32. Internally pulled up; the EN button drives it LOW.
3V3	right-1	Power	Output of the onboard regulator; may be used as a 3.3V input instead of VIN, but never both.	3.3V
GND	right-2	Ground	Ground return.	0V
GPIO15	right-3	GPIO	GPIO15, ADC2_CH3, Touch T3, HSPI CS, JTAG MTDO.
GPIO2	right-4	GPIO	GPIO2, ADC2_CH2, Touch T2, onboard LED on this board.
GPIO4	right-5	GPIO	GPIO4, ADC2_CH0, Touch T0.
GPIO16	right-6	GPIO	GPIO16, UART2 RX (Serial2 default).
GPIO17	right-7	GPIO	GPIO17, UART2 TX (Serial2 default).
GPIO5	right-8	GPIO	GPIO5, VSPI CS0 (SPI default SS).
GPIO18	right-9	GPIO	GPIO18, VSPI CLK (SPI default SCK).
GPIO19	right-10	GPIO	GPIO19, VSPI Q (SPI default MISO / CIPO).
GPIO21	right-11	GPIO	GPIO21, default Arduino Wire I2C SDA.
GPIO3	right-12	GPIO	GPIO3, UART0 RX. Wired to the onboard CP2102 USB-UART.
GPIO1	right-13	GPIO	GPIO1, UART0 TX. Wired to the onboard CP2102 USB-UART.
GPIO22	right-14	GPIO	GPIO22, default Arduino Wire I2C SCL.
GPIO23	right-15	GPIO	GPIO23, VSPI D (SPI default MOSI / COPI).

Logical pinout · physical placement not verified

Pin details

30 connections

VIN
Input to the onboard 3.3V regulator. Do not drive VIN and 3V3 simultaneously.
PowerVoltage · 5V nominal (4-12V)
left-1
GND
Ground return.
GroundVoltage · 0V
left-2
GPIO13
GPIO13, ADC2_CH4, Touch T4, HSPI MOSI, JTAG MTCK.
GPIO
left-3
GPIO12
GPIO12, ADC2_CH5, Touch T5, HSPI MISO, JTAG MTDI.
GPIO
left-4
GPIO14
GPIO14, ADC2_CH6, Touch T6, HSPI CLK, JTAG MTMS.
GPIO
left-5
GPIO27
GPIO27, ADC2_CH7, Touch T7.
GPIO
left-6
GPIO26
GPIO26, ADC2_CH9, DAC2.
GPIO
left-7
GPIO25
GPIO25, ADC2_CH8, DAC1.
GPIO
left-8
GPIO33
GPIO33, ADC1_CH5, Touch T8, 32K_XN.
GPIO
left-9
GPIO32
GPIO32, ADC1_CH4, Touch T9, 32K_XP.
GPIO
left-10
GPIO35
GPIO35, ADC1_CH7, VDET_2. Input only.
GPIO
left-11
GPIO34
GPIO34, ADC1_CH6, VDET_1. Input only.
GPIO
left-12
GPIO39
GPIO39, ADC1_CH3, SENSOR_VN. Input only.
GPIO
left-13
GPIO36
GPIO36, ADC1_CH0, SENSOR_VP. Input only.
GPIO
left-14
EN
Active-high chip enable. Pulling LOW resets the ESP32. Internally pulled up; the EN button drives it LOW.
Control
left-15
3V3
Output of the onboard regulator; may be used as a 3.3V input instead of VIN, but never both.
PowerVoltage · 3.3V
right-1
GND
Ground return.
GroundVoltage · 0V
right-2
GPIO15
GPIO15, ADC2_CH3, Touch T3, HSPI CS, JTAG MTDO.
GPIO
right-3
GPIO2
GPIO2, ADC2_CH2, Touch T2, onboard LED on this board.
GPIO
right-4
GPIO4
GPIO4, ADC2_CH0, Touch T0.
GPIO
right-5
GPIO16
GPIO16, UART2 RX (Serial2 default).
GPIO
right-6
GPIO17
GPIO17, UART2 TX (Serial2 default).
GPIO
right-7
GPIO5
GPIO5, VSPI CS0 (SPI default SS).
GPIO
right-8
GPIO18
GPIO18, VSPI CLK (SPI default SCK).
GPIO
right-9
GPIO19
GPIO19, VSPI Q (SPI default MISO / CIPO).
GPIO
right-10
GPIO21
GPIO21, default Arduino Wire I2C SDA.
GPIO
right-11
GPIO3
GPIO3, UART0 RX. Wired to the onboard CP2102 USB-UART.
GPIO
right-12
GPIO1
GPIO1, UART0 TX. Wired to the onboard CP2102 USB-UART.
GPIO
right-13
GPIO22
GPIO22, default Arduino Wire I2C SCL.
GPIO
right-14
GPIO23
GPIO23, VSPI D (SPI default MOSI / COPI).
GPIO
right-15

ESP32

158 other options

Wi-Fi and Bluetooth on a single chip, in every shape from Espressif DevKitC to Adafruit Feathers with STEMMA QT, DFRobot FireBeetles tuned for battery life, and Seeed XIAOs under a thumbnail.

View all 158

Related groups

4 groups

Arduino

About 75 boards across every Arduino generation: 5V Uno/Mega/GIGA, 3.3V MKR and Portenta, plus DFRduino and Bluno compatibles. Confirm the voltage rail before stacking any shield.

Boards · Arduino boards · 77 parts

Add-ons

About 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.

Boards · HATs, Shields & add-ons · 270 parts

Other MCUs

Specialists: Teensy for high-clock audio and USB, Adafruit SAMD boards running CircuitPython or the Arduino IDE, proper STM32 eval kits, and the micro:bit classroom ecosystem. Schematik builds target ESP32, Arduino Uno, and Pico; come here when you have a specific reason to.

Boards · Other MCU boards · 229 parts

Pi Pico

The Raspberry Pi MCU line — Pico, Pico 2, and third-party boards on the same silicon — plus a deep bench of Pico-pinout displays, loggers, and radio modules that do nothing without a Pico plugged in.

Boards · Pico & RP2040 boards · 43 parts

Pinout

Pin details

Arduino

Add-ons

Other MCUs

Pi Pico