Adafruit HUZZAH32 – ESP32 Breakout
Board
PRODUCT ID: 4172
Squeeeeze down your next ESP32 project to its bare-bones essential with
the Adafruit HUZZAH32 Breakout. This breakout is basically the 'big sister' of
our HUZZAH 8266, but instead of an ESP8266 it has the '32! We've pared down
our popular Feather ESP32, removing the battery charger and USB-serial
converter. You just get a regulator, some protection diodes, two buttons and an
LED. For some projects, where price and size are at a premium, you can program
this board over the 'FTDI cable' breakout when needed, and leave it alone
otherwise.
Note that this board doesn't come with a USB to serial converter chip and autoreset circuit. Instead, you will need to plug in a CP2104 Friend or FTDI cable.
Then, before uploading code, put it into bootloader mode by holding down the
GPIO #0 button and clicking Reset button, then releasing the #0 button.
That module in the middle of the breakout 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 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!
Comes fully assembled and tested, pre-programmed with ESP32 SPI WiFi coprocessor firmware that you can use in CircuitPython to use this into a WiFi coprocesssor over SPI + 2 pins. We also toss in some header so you can solder it
in and plug into a solderless breadboard.
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
PWM/timer input/output available on every GPIO pin
OpenOCD debug interface with 32 kB TRAX buffer
SDIO master/slave 50 MHz
SD-card interface support
TECHNICAL DETAILS
Product Dimensions: 44.0mm x 25.5mm x 4.8mm / 1.7" x 1.0" x 0.2"
Product Weight: 5.8g / 0.2oz
https://www.adafruit.com/product/4172/3‐27‐19
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