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Microcontroller
Adafruit ESP32 Feather V2
ESP32 Feather with 8 MB flash, 2 MB PSRAM, USB-C, and STEMMA QT.
- GPIO
- I2C
- SPI
- UART
- ADC
- DAC
- PWM
- USB
- Wi-Fi
- Bluetooth
- Processor
- ESP32-PICO-V3-02 dual-core LX6
- Logic
- 3.3 V GPIONot 5 V tolerant
- Power
- USB-C, LiPo connector, 3.3 V rail
- Format
- Feather module
Before you wire
3 cautions- GPIO is 3.3 V only.
- A2, A3, A4, and I37 are input-only GPIO.
- ADC2 pins cannot be used while Wi-Fi is on.
Pin map
Connector
Feather 16+12 headers
USB at top, JST battery at top-left, component side up
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
Pin
Hover, tap, or arrow to a pad to inspect it.
- Pad order and nets come from Adafruit's ESP32 Feather V2 board file (JP1, JP3), with GPIO numbers from CircuitPython pins.c.
- GPIO is 3.3 V only and is not 5 V tolerant.
- Left header positions 1-16, right header positions 17-28.
- GPIO7 and GPIO8 are free on this PICO-V3-02 module, unlike most ESP32 boards.
All 28 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | System | |||
| 2 | Power | 3V3 | ||
| 3 | Reserved | |||
| 4 | Ground | GND | ||
| 5 | DAC | GPIO26 | ||
| 6 | DAC | GPIO25 | ||
| 7 | ADC | GPIO34 · Input only. | ||
| 8 | ADC | GPIO39 · Input only. | ||
| 9 | ADC | GPIO36 · Input only. | ||
| 10 | ADC | GPIO4 | ||
| 11 | SPI | SPI | GPIO5 | |
| 12 | SPI | SPI | GPIO19 | |
| 13 | SPI | SPI | GPIO21 | |
| 14 | UART | UART | GPIO7 | |
| 15 | UART | UART | GPIO8 | |
| 16 | GPIO | GPIO37 · Input only. | ||
| 17 | Power | BAT | ||
| 18 | System | |||
| 19 | Power | USB | ||
| 20 | GPIO | GPIO13 / LED | ||
| 21 | GPIO | GPIO12 | ||
| 22 | GPIO | GPIO27 | ||
| 23 | GPIO | GPIO33 | ||
| 24 | GPIO | GPIO15 | ||
| 25 | GPIO | GPIO32 | ||
| 26 | GPIO | GPIO14 | ||
| 27 | I2C | I2C | GPIO20 | |
| 28 | I2C | I2C | GPIO22 |
Revision notes
- GPIO7 and GPIO8 are free on this PICO-V3-02 module, unlike most ESP32 boards.
Source references
Why it matters
- Feather footprint with classic ESP32 radios.
- GPIO7 and GPIO8 are usable on this module.
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