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Microcontroller · Development Board
ESP32-S3-DevKitC-1
Espressif's mainstream ESP32-S3 reference board for USB, AI acceleration experiments, BLE, Wi-Fi, and embedded product prototypes.
Processor
ESP32-S3-WROOM / WROVER variants
Logic
3.3 V GPIO
Power
USB, 5 V input, 3.3 V regulator
Format
Breadboard dev kit
Check before wiring
- Module variant affects flash, PSRAM, and available pins.
- Bootstrapping pins need sane pull states at reset.
Interfaces
GPIOI2CSPIUARTADCPWMUSBWi-FiBluetoothJTAG
Source-backed connector
Interactive pin map
Pin map
Connector
ESP32-S3-DevKitC-1 J1/J3 headers
USB at the bottom, component side up, headers on both edges
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.
- Official Espressif J1/J3 header table for ESP32-S3-DevKitC-1 v1.1.
- GPIO35 through GPIO37 are unavailable on Octal flash/PSRAM module variants.
- Bootstrapping and USB pins need care when external circuits drive them at reset.
All 44 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | Power | 3V3 | ||
| 2 | Power | 3V3 | ||
| 3 | System | |||
| 4 | GPIO | |||
| 5 | GPIO | |||
| 6 | GPIO | |||
| 7 | GPIO | |||
| 8 | System | Strapping | ||
| 9 | GPIO | |||
| 10 | GPIO | |||
| 11 | GPIO | |||
| 12 | GPIO | |||
| 13 | System | Strapping | ||
| 14 | System | Strapping | ||
| 15 | GPIO | |||
| 16 | GPIO | |||
| 17 | GPIO | |||
| 18 | GPIO | |||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | Power | 5V | ||
| 22 | Ground | GND | ||
| 23 | Ground | GND | ||
| 24 | UART | UART | ||
| 25 | UART | UART | ||
| 26 | ADC | |||
| 27 | ADC | |||
| 28 | GPIO | |||
| 29 | GPIO | |||
| 30 | GPIO | |||
| 31 | GPIO | |||
| 32 | GPIO | |||
| 33 | GPIO | |||
| 34 | GPIO | |||
| 35 | GPIO | |||
| 36 | System | BOOT | ||
| 37 | System | Strapping | ||
| 38 | GPIO | |||
| 39 | GPIO | |||
| 40 | GPIO | |||
| 41 | Alt | USB_D+ | ||
| 42 | Alt | USB_D- | ||
| 43 | Ground | GND | ||
| 44 | Ground | GND |
Why it matters
- Official header tables list J1/J3 pin names and functions.
- Popular target for ESP-IDF, Arduino ESP32, and CircuitPython work.
- Native USB improves firmware and HID experiments.
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