Adafruit
Adafruit HUZZAH32 – ESP32 Feather Board
Best compact controller for portable, wireless IoT and sensor projects.
The Adafruit HUZZAH32 Feather Board is a compact development platform for IoT projects, featuring Espressif's ESP32-WROOM32 module with integrated WiFi and Bluetooth. Its dual-core processor runs up to 240 MHz, supported by 520 KB SRAM and 4 MB flash memory. The board includes a LiPo battery charger and USB-C/Micro-USB power input, operating at 3.3 V logic levels. Its Feather form factor ensures compatibility with numerous add-on modules. Ideal for makers and developers needing robust wireless communication and flexible programming environments for sensor nodes, control systems, and portable devices.
$19.95
Owner Satisfaction
4.7
/ 5
Category Rank
28
/ 1541
#28 in Development Boards
Price vs Category Average
-77%
Below average
Processor
6240
/ Dual-core Tensilica LX CPU, clocked up to MHz
Who it's for
- IoT developers building complex, connected wireless projects
- Prototypers needing modular hardware and integrated battery management
- Beginners and educators requiring reliable, well-documented software support
Who should skip it
- Engineers requiring extensive pinouts for complex peripheral arrays
- Developers prioritizing long-term battery life for remote sensors
- Budget-conscious hobbyists seeking the lowest possible hardware cost
Performance breakdown
IoT Connectivity
Integrated Wi-Fi and Bluetooth handle complex wireless projects with ease.
Processing Power
Dual-core 240 MHz performance tackles demanding multitasking and rapid data processing.
Ecosystem Compatibility
Feather form factor offers unmatched modularity with a vast library of add-ons.
Programming Versatility
Seamless support for Arduino, CircuitPython, and ESP-IDF suits every developer level.
Portable Power Management
Onboard LiPo charging makes battery-powered remote sensing projects incredibly simple.
I/O Flexibility
Abundant analog and digital pins provide ample room for complex sensor arrays.
Key Specs
Processor
Dual-core Tensilica LX6 CPU, clocked up to 240 MHz
Memory
520 KB on-chip SRAM and 4 MB SPI flash memory
Wireless
Integrated 2.4 GHz WiFi (802.11 b/g/n) and Bluetooth (Classic and BLE)
Power
Built-in LiPo/Li-ion battery charger; USB-C or Micro-USB input for 5 V power
I/O
Approximately 12 ADC channels, 2 DAC outputs, PWM on most pins
Logic Level
3.3 V
Interface
USB-to-Serial converter with automatic bootloader reset
Dimensions
51.0mm x 23mm x 12mm
Features
- Integrated WiFi and Bluetooth for seamless IoT connectivity
- Dual-core processor for efficient multitasking
- Feather form factor for easy expansion with FeatherWings
- Onboard LiPo battery charger for portable applications
- Multiple analog and digital I/O pins for flexible interfacing
- USB-to-Serial converter for simplified programming and debugging
- Built-in Hall effect sensor and low-noise amplifier for analog applications
- Supports Arduino IDE, ESP-IDF, and CircuitPython for diverse development needs
- Integrated USB-to-Serial converter for easy programming
- Automatic bootloader reset for seamless uploads
- Extensive GPIO brought out for maximum connectivity
- Compatible with a wide range of Feather Wings for expandability
- Compact Feather form factor for small projects
- Integrated Wi-Fi and Bluetooth for IoT applications
- High clock speed (240 MHz) for rapid processing
- Extensive I/O and analog input capabilities
- On-board PCB antenna
- Hall sensor
- 10x capacitive touch interface
- Ultra-low noise analog amplifier
- 32 kHz crystal oscillator
What customers say
The Adafruit HUZZAH32 is highly regarded for its superior quality and seamless integration within the ESP32 market. Customers consistently value the adherence to the Feather form factor, which simplifies prototyping with FeatherWings. A major advantage is the robust power management, featuring built in LiPo charging, making it excellent for reliable portable IoT projects. Users find the dual core processing and integrated connectivity handle complex tasks easily across different programming environments. While the price is higher than generic modules, the premium is justified by the excellent build quality and Adafruit's comprehensive support ecosystem. This board is viewed as a dependable workhorse offering stability for serious connected development.
Know before you buy
The board is highly versatile and supports the Arduino IDE, Espressif's native ESP-IDF, and CircuitPython, making it suitable for both beginners and advanced developers.
Yes, the HUZZAH32 features an onboard LiPo/Li-ion battery charger. You can connect a 3.7V battery directly to the board, and it will charge automatically whenever the board is plugged into a USB power source.
Yes, it follows the standard Feather form factor. This means it is physically and electrically compatible with the vast ecosystem of FeatherWing add-on boards, allowing you to easily add displays, sensors, or motor controllers.
The board operates at 3.3V logic levels. Be sure to use level shifters if you are connecting it to 5V sensors or peripherals to avoid damaging the ESP32 chip.
No, it includes an integrated USB-to-Serial converter with an automatic bootloader reset. You can simply plug it into your computer via USB and upload code directly without needing extra hardware.
The HUZZAH32 comes with integrated 2.4 GHz Wi-Fi (802.11 b/g/n) and dual-mode Bluetooth, supporting both classic Bluetooth and Bluetooth Low Energy (BLE) for your IoT projects.
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