Adafruit HUZZAH32 – ESP32 Feather Board

Board
by Adafruitadafruit-huzzah32-esp32-feather≈ cheap (under ~$15)

Also known as: featheresp32

Verify my boardCompareEdit on GitHub
Flash this board — 1 firmware option · Unverified
Adafruit HUZZAH32 – ESP32 Feather Board board
Board
Adafruit HUZZAH32 – ESP32 Feather Board pinout
Pinout

Specifications

Radiosinherited from ESP32

Wi-Fi
Wi-Fi 4 · 2.4 GHz
Bluetooth LE
BLE 4.2
Bluetooth Classic
yes
802.15.4
no

USB

Native USB
no
Connector
micro-usb

Board

Form factor
feather
Dimensions
50 × 23 mm
Battery connector
yes
Charging
yes

Display & extras

Extras
pcb-antenna
Built onAdafruit HUZZAH32 – ESP32 Feather Board BoardESP32 SoC

Feather-form ESP32 board with Micro USB, integrated LiPoly charging via JST connector, and 4 MB flash.

Firmware for this board

Unverified

  • OpenMQTTGatewayUnverifiedhome
    Flash OpenMQTTGatewayguided

    Unverified esp-atlas asserts this board↔firmware link at the shown trust tier — it does not guarantee your specific unit or the current firmware version. Flashing can erase keys/config and can brick the device. At your own risk.

Notes

  • 4 MB flash; no PSRAM
  • Integrated LiPoly charger with JST 2-PH battery connector; battery and cable sold separately
  • Built-in USB-to-Serial converter over Micro USB; bridge chip model not named on the product page (omitted)
  • io.gpio_free=9 DERIVED, not quoted (SPEC-io-power.md §5.3). Pinouts page states explicit GPIO numbers for 14 header pins (bottom row A0-A5 = GPIO26/25/34/39/36/4 plus GPIO21; top row = GPIO13/12/27/33/15/32/14); RX/TX/SCL/SDA are also broken out on the header but the page never restates their GPIO numbers, so they are excluded from this count rather than guessed. Subtracting esp32's soc.reserved_pins that are exposed among those 14 -- strapping {12,15} (2), input_only {34,36,39} (3) -- gives 14 - 5 = 9. Math not vendor-stated; verify before treating as exact.
  • io.power_out QUOTED: vendor page states "The regulator can supply 500mA peak but half of that is drawn by the ESP32"

Verify my board

Reads the connected chip over USB and checks it against what esp-atlas cites for Adafruit HUZZAH32 – ESP32 Feather Board — over Web Serial, no backend, nothing leaves your browser.

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Serial monitor

Not connected.