The HUZZAH32 is ESP32-based Feather, made with the official WROOM32 module. We packed everything you love about Feathers: built in USB-to-Serial converter, automatic bootloader reset, Lithium Ion/Polymer charger, and just about all of the GPIOs brought out so you can use it with any of our Feather Wings. We have other boards in the Feather family,

That module nestled in at the end of this Feather contains a dual-core ESP32 chip, 4 MB of SPI Flash, tuned antenna, and all the passives you need to take advantage of this powerful new processor. The ESP32 has both WiFi and Bluetooth Classic/LE support. That means it's perfect for just about any wireless or Internet-connected project.

Because it's part of our Feather eco-system, you can take advantage of the 50+ Wings that we've designed to add all sorts of cool accessories.

The ESP32 is a perfect upgrade from the ESP8266 that has been so popular. In comparison, the ESP32 has way more GPIO, plenty of analog inputs, two analog outputs, multiple extra peripherals (like a spare UART), two cores so you don't have to yield to the WiFi manager, much higher-speed processor, etc. etc! We think that as the ESP32 gets traction, we'll see more people move to this chip exclusively, as it is so full-featured.

Please note: The ESP32 is still targeted to developers. Not all of the peripherals are fully documented with example code, and there are some bugs still being found and fixed. We got all of our Featherwings working under Arduino IDE, so you can expect things like I2C and SPI and analog reads to work. But other elements are still under development. For that reason, we recommend this Feather for makers who have some experience with microcontroller programming, and not as a first dev board.

Here are specifications from Espressif about the ESP32:

240 MHz dual core Tensilica LX6 microcontroller with 600 DMIPS

Integrated 520 KB SRAM

Integrated 802.11b/g/n HT40 Wi-Fi transceiver, baseband, stack and LWIP

Integrated dual mode Bluetooth (classic and BLE)

4 MByte flash include in the WROOM32 module

On-board PCB antenna

Ultra-low noise analog amplifier

Hall sensor

10x capacitive touch interface

32 kHz crystal oscillator

3 x UARTs (only two are configured by default in the Feather Arduino IDE support, one UART is used for bootloading/debug)

3 x SPI (only one is configured by default in the Feather Arduino IDE support)

2 x I2C (only one is configured by default in the Feather Arduino IDE support)

12 x ADC input channels

2 x I2S Audio

2 x DAC

Obtain your Adafruit IO Credentials from navigating to io.adafruit.com and clicking My Key. Copy and paste these credentials next to IO_USERNAME and IO_KEY . Enter your network credentials next to WIFI_SSID and WIFI_PASS . Click the Upload button to upload your sketch to the ESP32-S2.

This version of the ESP32 Feather comes with plain 0.1″ headers already soldered in so it’s ready for instant gratification and Feather fun!

That module nestled at the end of this Feather contains a dual-core ESP32 chip, 4 MB of SPI Flash, tuned antenna, and all the passives you need to take advantage of this powerful new processor. The ESP32 has both WiFi and Bluetooth Classic/LE support. That means it’s perfect for just about any wireless or Internet-connected project.

The ESP8266 started a small revolution by bringing WiFi to a small and cheap package that also had enough processing power and enough pins to get small things done. Now get ready to take your bite-sized WiFi capabilities to the next level with the ESP32 Development Board!

The development board breaks out all the module’s pins to 0.1″ headers and provides a CP2102 USB-TTL serial adapter, programming and reset buttons, and a power regulator to supply the ESP32 with a stable 3.3 V. Espressif doubled-down on the CPU resources for the ESP32 with a dual core, running at 160MHz and tons more pins and peripherals.

Please note: The ESP32 is still targeted to developers. Not all of the peripherals are fully documented with example code, and there are some bugs still being found and fixed. We got many sensors and displays working under Arduino IDE, so you can expect things like I2C and SPI and analog reads to work. But other elements are still under development. This board is designed for use with the Tensilica toolchain (ESP IDF) so we recommend that for better hardware-support coverage.

Color of PCB may vary. Note that is is exactly large enough to cover both sides of a solderless breadboard with no left-over pins, so if you want to use with a solderless breadboard, use two side-by-side!

PWM/timer input/output available on every GPIO pin

OpenOCD debug interface with 32 kB TRAX buffer

SDIO controller/peripheral 50 MHz

SD-card interface support