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