Adafruit HUZZAH32 ESP32 Feather Board
Adafruit's Feather-format ESP32 board with dual-core Xtensa LX6 @ 240MHz, WiFi b/g/n, Bluetooth Classic + BLE 4.2, built-in LiPo charger, and Feather-compatible pin layout. Great all-around wireless IoT platform.
$19.95
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Specifications
Components
ESP32-WROOM-32 module with dual-core Xtensa LX6 at 240MHz, 520KB SRAM, 4MB flash, WiFi b/g/n, Bluetooth Classic + BLE 4.2
MCP73831 single-cell LiPo/Li-Ion charge management IC providing 100mA charge current with status indicator LED
Bus Interfaces
GPIO Map
The Adafruit HUZZAH32 is an ESP32-based Feather board — Adafruit's beloved form-factor standard — making it compatible with the entire ecosystem of Feather Wings (add-on boards). It packs dual-core WiFi + Bluetooth into the slim Feather shape, with the added convenience of a built-in 100mA LiPo charger.
Key Features
- ESP32 dual-core — 240MHz Xtensa LX6 with 520KB SRAM for demanding tasks
- WiFi b/g/n + Bluetooth Classic + BLE 4.2 — full wireless stack in one chip
- Built-in LiPo charger — MCP73831 charges a 3.7V LiPo via Micro-USB; run standalone on battery
- Feather-compatible — fits all Feather Wings; standard 28-pin layout
- U.FL antenna connector — optional external antenna for improved range
- 26 GPIO — including 6 ADC channels, I2C, SPI, UART, and hardware PWM on most pins
Pinout Notes
GPIO34, GPIO36, and GPIO39 are input-only (no internal pull-up/down, no output drive). A0 (GPIO26) and A1 (GPIO25) are the most capable ADC pins for general use.
Use Cases
A versatile workhorse for WiFi-connected sensors, smart home devices, data loggers, and battery-powered wireless nodes. The Feather ecosystem means you can quickly add displays, GPS, LoRa, or sensor Wings without custom PCBs.
Use Cases
4IoT
Internet of Things applications including connected sensors, actuators, and smart devices that communicate over WiFi, BLE, LoRa, or other wireless protocols.
Smart Home
Home automation devices for controlling lighting, climate, security, and appliances.
Environmental Monitoring
Monitoring environmental conditions like temperature, humidity, air quality, and weather data using remote sensors.
home-automation
Resources
Where to Buy
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