Adafruit Feather ESP32 V2

Development Board ADAFRUIT_FEATHER_ESP32_V2

ESP32 ADAFRUIT

Adafruit Feather ESP32 V2 is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 8MB flash memory.

240 MHz CPU 8MB Flash WiFi + BT 4.2

About Adafruit Feather ESP32 V2

ESP32 Xtensa dual-core 32-bit LX6 · 240 MHz

Updated Feather ESP32 with improved power handling and USB-C - great for portable IoT and CircuitPython use.

Technical Specifications

Complete technical specification details for Adafruit Feather ESP32 V2

ESP32 · Dual-Core

Arch

XTENSA

Clock

240 MHz

Flash

8MB

Connectivity

WiFi

802.11 b/g/n (2.4 GHz)

Bluetooth 4.2

Classic + BLE

Digital IO

Analog In

PWM

Interrupts

Full datasheet & reference manual

Download

Quick Setup

Copy-paste configs for Adafruit Feather ESP32 V2 - auto‑generated from this board's exact hardware specs.

ESP32 240 MHz 8MB DIO Xtensa

In Arduino IDE 2 select Adafruit Feather Esp32 V2 from the esp32 by Espressif package. In PlatformIO use board = esp32dev. ESP32 · 240 MHz · 8MB · DIO.

Tools menu settings

Board (select in Arduino IDE) Adafruit Feather Esp32 V2

CPU Frequency 240 MHz

Flash Size 8MB

Flash Mode DIO

Upload Speed 921600

Architecture Xtensa

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "Adafruit Feather Esp32 V2" for the Adafruit Feather ESP32 V2.

platformio.ini


[env:adafruit_feather_esp32_v2]
platform  = espressif32
board     = esp32dev
framework = arduino

; Exact hardware config for Adafruit Feather ESP32 V2
board_build.mcu        = esp32
board_build.f_cpu      = 240000000L
board_build.flash_size = 8MB
board_build.flash_mode = dio
board_upload.flash_size = 8MB

The board value is a close generic match - check PlatformIO board registry for an exact fit.

esp32: block (YAML)


esp32:
  board: esp32dev
  framework:
    type: arduino   # or "esp-idf"

# Adafruit Feather ESP32 V2 - 240 MHz ESP32
# Flash: 8MB | USB: N/A

Paste into your device's .yaml. See ESPHome ESP32 docs for full options.

esptool.py - flash command


esptool.py \
  --chip esp32 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 8MB \
    0x1000 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x1000

Adafruit Feather ESP32 V2 Pinout Diagram

Complete pin reference for Adafruit Feather ESP32 V2

Useful Links

Datasheets and resources for Adafruit Feather ESP32 V2

Board Datasheet

Technical specifications

ESP32 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for Adafruit Feather ESP32 V2

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Analog	Touch	PWM	Other
0		T1
2		T2	PWM	NEOPIXEL_I2C_POWER
4	A5	T0	PWM
5			PWM	SCK
7			PWM	RX
8			PWM	TX
12	A11	T5	PWM
13	A12	T4	PWM	LED_BUILTIN
14	A6	T6	PWM
15	A8	T3	PWM
19			PWM	MOSI
20			PWM	SCL
21			PWM	MISO
22			PWM	SDA
25	A1		PWM	DAC1
26	A0		PWM	DAC2
27	A10	T7	PWM
32	A7	T9	PWM
33	A9	T8	PWM	SS
34	A2
35	A13			BATT_MONITOR
36	A4
38				BUTTON
39	A3

Legend

A0 Analog input

T0 Touch sensor

PWM PWM capable

RX/TX Serial pins

LED Built-in LED

# Pin number

Default Tools & Configuration

Build and upload settings for Adafruit Feather ESP32 V2

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x1000`
Flash mode	dio
Boot mode	dio
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)

Configuration Summary

The Adafruit Feather ESP32 V2 uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x1000.

Flash mode: dio | Boot mode: dio

Max sketch size: 1280 KB | Max data size: 320 KB

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Adafruit Feather ESP32 V2

About Adafruit Feather ESP32 V2

Technical Specifications

Quick Setup

Adafruit Feather ESP32 V2 Pinout Diagram

Useful Links

Pin Mappings

Default Tools & Configuration

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Contents