Board pinout

ESP32-S3-DevKitC-1 Pinout

An ESP32 with more GPIO, native USB, and AI acceleration for camera, audio, and edge-ML projects. It runs at 3.3V logic with 36 usable GPIO pins. Every value below is verified against the pin map Banana Board uses to check real designs.

MCU

ESP32S3

Logic

3.3V

GPIO

PWM

Analog

Ground pins

Interfaces

PWM pins36 pins

Analog inputs20 pins

Watch out for

Strapping: GPIO0, GPIO3, GPIO45, GPIO46. These set the boot mode at reset, so pulling them the wrong way can stop the board from booting.

3.3V logic: pins are not 5V tolerant, so level-shift or divide any 5V signal into an input.

Pins by capability

A quick map of which pins do what. Colours match the pin table below.

Power

3V33V35V

Ground

GNDGNDGND

PWM

GPIO0GPIO1GPIO2GPIO3GPIO4GPIO5GPIO6GPIO7GPIO8GPIO9GPIO10GPIO11GPIO12GPIO13GPIO14GPIO15GPIO16GPIO17GPIO18GPIO19GPIO20GPIO21GPIO33GPIO34GPIO35GPIO36GPIO37GPIO38GPIO39GPIO40GPIO41GPIO42GPIO45GPIO46GPIO47GPIO48

Analog / ADC

GPIO1GPIO2GPIO3GPIO4GPIO5GPIO6GPIO7GPIO8GPIO9GPIO10GPIO11GPIO12GPIO13GPIO14GPIO15GPIO16GPIO17GPIO18GPIO19GPIO20

Touch

GPIO1GPIO2GPIO3GPIO4GPIO5GPIO6GPIO7GPIO8GPIO9GPIO10GPIO11GPIO12GPIO13GPIO14

Strapping

GPIO0GPIO3GPIO45GPIO46

Starter circuits to learn with

Beginner projects for the ESP32-S3-DevKitC-1. The pins below come straight from its real pin map, so they are safe to wire as shown.

Blink an LED

GPIO1

Drive an LED (through a ~220Ω resistor) from GPIO1 and toggle it in loop(). The classic first sketch.

digitalWrite()

Fade an LED (PWM)

GPIO0

Use GPIO0 with analogWrite() to smoothly ramp an LED from off to full brightness.

analogWrite()

Read a potentiometer

GPIO1

Wire a potentiometer's wiper to GPIO1 and read its position with analogRead().

analogRead()

Read a button

GPIO2

Connect a push button between GPIO2 and GND, set the pin to INPUT_PULLUP, and skip the external resistor.

digitalRead() + INPUT_PULLUP

Try it without the hardware

Describe one of these circuits in the Studio and Banana Board wires it to these exact ESP32-S3-DevKitC-1 pins, validates it, and lets you simulate before you build.

Build & simulate in the Studio

Full ESP32-S3-DevKitC-1 pin map

Pin	GPIO	Capabilities	Voltage	Notes
3V33.3V	—	Power	3.3V	3.3 V regulated output / MCU supply.
3V33.3V	—	Power	3.3V	Second 3.3 V header pin.
5VVBUS VIN	—	Power	5V	5 V from USB / external supply (pre-regulator).
GNDG	—	GND	—	—
GNDG	—	GND	—	—
GNDG	—	GND	—	—
GPIO00 BOOTstrapping	0	DigitalPWMI2CSPI	—	Strapping pin (boot mode select); wired to the BOOT button on the DevKitC-1.
GPIO11	1	DigitalPWMI2CSPIADCTouch	ADC1_CH0	—
GPIO22	2	DigitalPWMI2CSPIADCTouch	ADC1_CH1	—
GPIO33strapping	3	DigitalPWMI2CSPIADCTouch	ADC1_CH2	Strapping pin (JTAG signal source select).
GPIO44	4	DigitalPWMI2CSPIADCTouch	ADC1_CH3	—
GPIO55	5	DigitalPWMI2CSPIADCTouch	ADC1_CH4	—
GPIO66	6	DigitalPWMI2CSPIADCTouch	ADC1_CH5	—
GPIO77	7	DigitalPWMI2CSPIADCTouch	ADC1_CH6	—
GPIO88 SDA	8	sdaDigitalPWMSPIADCTouch	ADC1_CH7	Default I2C SDA (Wire).
GPIO99 SCL	9	sclDigitalPWMSPIADCTouch	ADC1_CH8	Default I2C SCL (Wire).
GPIO1010 SS CS	10	csDigitalPWMI2CADCTouch	ADC1_CH9	Default SPI CS/SS (FSPI).
GPIO1111 MOSI	11	mosiDigitalPWMI2CADCTouch	ADC2_CH0	Default SPI MOSI (FSPI). ADC2 is unavailable while Wi-Fi is active.
GPIO1212 SCK	12	sckDigitalPWMI2CADCTouch	ADC2_CH1	Default SPI SCK (FSPI). ADC2 is unavailable while Wi-Fi is active.
GPIO1313 MISO	13	misoDigitalPWMI2CADCTouch	ADC2_CH2	Default SPI MISO (FSPI). ADC2 is unavailable while Wi-Fi is active.
GPIO1414	14	DigitalPWMI2CSPIADCTouch	ADC2_CH3	ADC2 is unavailable while Wi-Fi is active.
GPIO1515	15	DigitalPWMI2CSPIADC	ADC2_CH4	ADC2 is unavailable while Wi-Fi is active.
GPIO1616	16	DigitalPWMI2CSPIADC	ADC2_CH5	ADC2 is unavailable while Wi-Fi is active.
GPIO1717	17	DigitalPWMI2CSPIADC	ADC2_CH6	ADC2 is unavailable while Wi-Fi is active.
GPIO1818	18	DigitalPWMI2CSPIADC	ADC2_CH7	ADC2 is unavailable while Wi-Fi is active.
GPIO1919 D- USB_D-	19	DigitalPWMI2CSPIADC	ADC2_CH8	USB-OTG D- / JTAG; shared with the native USB port. ADC2 is unavailable while Wi-Fi is active.
GPIO2020 D+ USB_D+	20	DigitalPWMI2CSPIADC	ADC2_CH9	USB-OTG D+ / JTAG; shared with the native USB port. ADC2 is unavailable while Wi-Fi is active.
GPIO2121	21	DigitalPWMI2CSPI	—	—
GPIO3333	33	DigitalPWMI2CSPI	—	Reserved when the module is fitted with octal SPI PSRAM (e.g. ESP32-S3-WROOM-1 N8R8); avoid unless your module uses quad PSRAM.
GPIO3434	34	DigitalPWMI2CSPI	—	Reserved when the module is fitted with octal SPI PSRAM (e.g. ESP32-S3-WROOM-1 N8R8); avoid unless your module uses quad PSRAM.
GPIO3535	35	DigitalPWMI2CSPI	—	Reserved when the module is fitted with octal SPI PSRAM (e.g. ESP32-S3-WROOM-1 N8R8); avoid unless your module uses quad PSRAM.
GPIO3636	36	DigitalPWMI2CSPI	—	Reserved when the module is fitted with octal SPI PSRAM (e.g. ESP32-S3-WROOM-1 N8R8); avoid unless your module uses quad PSRAM.
GPIO3737	37	DigitalPWMI2CSPI	—	Reserved when the module is fitted with octal SPI PSRAM (e.g. ESP32-S3-WROOM-1 N8R8); avoid unless your module uses quad PSRAM.
GPIO3838 RGB_LED	38	DigitalPWMI2CSPI	—	On DevKitC-1 v1.0 this drives the onboard addressable RGB LED (WS2812).
GPIO3939	39	DigitalPWMI2CSPI	—	—
GPIO4040	40	DigitalPWMI2CSPI	—	—
GPIO4141	41	DigitalPWMI2CSPI	—	—
GPIO4242	42	DigitalPWMI2CSPI	—	—
GPIO4545strapping	45	DigitalPWMI2CSPI	—	Strapping pin (VDD_SPI voltage select).
GPIO4646strapping	46	DigitalPWMI2CSPI	—	Strapping pin (ROM boot-log printing / boot mode).
GPIO4747	47	DigitalPWMI2CSPI	—	—
GPIO4848 RGB_LED NEOPIXEL	48	DigitalPWMI2CSPI	—	Drives the onboard addressable RGB LED (WS2812) on DevKitC-1 v1.1.

42 of 42 pins shown. Data verified against the board pin map Banana Board uses to check every design.

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Frequently asked questions

Is the ESP32-S3-DevKitC-1 3.3V or 5V logic?

The ESP32-S3-DevKitC-1 runs at 3.3V logic. Its GPIO pins are not 5V tolerant, so use a level shifter or divider when connecting 5V signals to an input.

How many GPIO pins does the ESP32-S3-DevKitC-1 have?

The ESP32-S3-DevKitC-1 exposes 36 usable GPIO pins, plus 3 power and 3 ground pins.

Which pins are PWM-capable on the ESP32-S3-DevKitC-1?

Most GPIO pins on the ESP32-S3-DevKitC-1 can output PWM (36 pins in total).

How many analog (ADC) inputs does the ESP32-S3-DevKitC-1 have?

The ESP32-S3-DevKitC-1 has 20 ADC-capable pins: 20 pins (GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6, GPIO7, GPIO8, GPIO9, GPIO10, GPIO11, GPIO12, GPIO13, GPIO14, and more).

Which pins on the ESP32-S3-DevKitC-1 are strapping pins to avoid?

GPIO0, GPIO3, GPIO45, GPIO46 are strapping pins that set the boot mode at reset. Using them for peripherals can stop the board from booting, so prefer other GPIOs or make sure your circuit does not pull them the wrong way at power-up.

Other board pinouts

Arduino Uno R3 Arduino Nano Arduino Mega 2560 Arduino Leonardo ESP32 DevKit V1 (DOIT, 30-pin) ESP32-C3-DevKitM-1 NodeMCU ESP8266 (ESP-12E) Raspberry Pi Pico Raspberry Pi Pico W Arduino Nano RP2040 Connect

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