One of our standout Feathers is the Adafruit HUZZAH32 ESP32 Feather. It features the exceptional ESP32 WROOM module, streamlining WiFi and Bluetooth projects that utilize Espressif's renowned chipset. Recently, we redesigned this Feather, transitioning from the outdated CP2104 to the accessible CH9102F. This change sparked a series of improvements, culminating in a brand-new design: the Adafruit ESP32 Feather V2.
This product version comes with pre-soldered pin headers for immediate use. However, it does not allow for the soldering of stacking headers.
The V2 represents a major overhaul, to the extent that it's regarded as an entirely new product. It retains the ESP32 chip but incorporates numerous enhancements and upgrades.:
Compared to the original Feather with 4 MB Flash and no PSRAM, the V2 has 8 MB Flash and 2 MB PSRAM
Additional user button tactile switch on input pin 38
Additional NeoPixel mini RGB LED with controllable power pin
Additional STEMMA QT port for plug-and-play I2C connections
USB Type C port instead of Micro B
Separate controllable 3.3V power supply for STEMMA QT to allow for ultra-low power consumption even with sensors attached
Designed for low power usage: verified with a PPK to draw 70uA from the Lipoly battery in deep sleep and 1.2mA in light sleep.
ESP32 Pico module is much smaller, allowing for clear marking of all breakout pads and additional mounting holes!
Upgrade the USB to serial converter from CP2102 to CH9102F which is available for purchase! The CH9102F has no issues uploading at 921600 bps for speedy firmware loading.
However, to incorporate the PSRAM and utilize the new Pico module, which was compact enough to accommodate various additional features, some of the breakout pads have been altered. Here's what you need to know:
The pin numbers for the I2C port (SDA, SCL), hardware UART (RX, TX), and SPI (SCK, MOSI, MISO) have changed. If your code has hardcoded use for those pins, you'll want to replace them either by the new numbers or change the code to use the 'pretty' names like SDA or SCK.
The correct numbers will be substituted when selecting the new Feather ESP32 V2 board in the Espressif board support package.
Note the names are in the same spots, we haven't changed where the I2C/UART/SPI pins are located on the board, just which ESP32 pin numbers they are connected to in the module.
The 'corner' pin next to TX has changed from pin 21 to 37. This pin is not used in any FeatherWings because its considered an 'extra pin'. It's also changed from a GPIO to input-only
The remaining numbered pins and A0-A5 pins have not changed pin numbers.
The module located at the end of this Feather features a dual-core ESP32 chip, 8 MB of SPI Flash, 2 MB of PSRAM, a finely-tuned PCB antenna, and all the necessary passives to harness the power of this advanced processor. With support for both WiFi and Bluetooth Classic/LE, the ESP32 is ideal for a wide range of wireless or Internet-connected projects.
As a component of our Feather ecosystem, you have access to over 50 Wings designed to enhance your experience with a variety of cool accessories. Additionally, the beloved built-in battery charging and monitoring feature of the ESP32 Feather remains intact in this latest upgrade.
Features:
ESP32 Dual core 240MHz Xtensa® processor - the classic dual-core ESP32 you know and love!
Mini module has FCC/CE certification and comes with 8 MByte of Flash and 2 MByte of PSRAM - you can have huge data buffers
Power options - USB type C or Lipoly battery
Built-in battery charging when powered over USB-C
LiPoly battery monitor with two 200K resistor dividers
Reset and User (I38) buttons to reset the board and as a separate input
High-speed upload with auto-reset and serial debug with ultra-reliable CP2102N chipset.
STEMMA QT connector for I2C devices, with switchable power, so you can go into low power mode.
Charge/User LEDs + status NeoPixel with pin-controlled power for low power usage
Low Power friendly! In deep sleep mode, we can get down to 80~100uA of current draw from the Lipoly connection. Quiescent current is from the power regulator, ESP32 chip, and Lipoly monitor. Turn off the NeoPixel and external I2C power for the lowest quiescent current draw.
Works with Arduino or MicroPython
Lipoly battery and USB cable not included.