Adafruit QT Py ESP32-S2 WiFi Dev Board with STEMMA QT

What has your favorite Espressif WiFi microcontroller, comes with our favorite connector - the STEMMA QT, a chainable I2C port, and has lots of Flash and RAM memory for your next IoT project? What will make your next IoT project flyyyyy? What a cutie pie! Or is it... a QT Py? This diminutive dev board comes with one of our new favorite lil chips, the ESP32-S2! 

The ESP32-S2 is a highly-integrated, low-power, 2.4 GHz Wi-Fi System-on-Chip (SoC) solution that now has built-in native USB as well as some other interesting new technologies like Time of Flight distance measurements. With its state-of-the-art power and RF performance, this SoC is an ideal choice for a wide variety of application scenarios relating to the Internet of Things (IoT), wearable electronics, and smart homes.

Please note the QT Py ESP32-S2 has a single-core 240 MHz chip, so it won't be as fast as ESP32's with dual-core. Also, there is no Bluetooth® support. However, we are super excited about the ESP32-S2's native USB which unlocks a lot of capabilities for advanced interfacing! This ESP32-S2 mini-module we are using on the QT Py comes with 4 MB flash and 2 MB PSRAM so you can buffer massive JSON files for parsing!

Pinout and shape are Seeed Xiao compatible, with castellated pads so you can solder it flat to a PCB. In addition to the QT connector, we also added an RGB NeoPixel (with controllable power pin to allow for ultra-low-power usage), a reset button (great for restarting your program or entering the bootloader) and a button on GPIO 0 for entering the ROM bootloader or for user input

Runs Arduino like a dream, and CircuitPython projects are fantastically fun.

• Same size, form-factor, and pin-out as Seeed Xiao
• USB Type C connector - If you have only Micro B cables, this adapter will come in handy!
• ESP32-S2 240MHz Tensilica processor - the next generation of ESP32, now with native USB so it can act like a keyboard/mouse, MIDI device, disk drive, etc!
• 4 MB Flash & 2 MB PSRAM
• Native USB supported by every OS - can be used in Arduino or CircuitPython as USB serial console, MIDI, Keyboard/Mouse HID, even a little disk drive for storing Python scripts.
• Can be used with Arduino IDE or CircuitPython
• Built-in RGB NeoPixel LED with power control to reduce quiescent power in deep sleep
• Battery input pads on underside with diode protection for external battery packs up to 6V input
• 13 GPIO pins:
  • 11 on breakout pads, 2 more on QT connector
  • 10 x 12-bit analog inputs (SPI high speed pads do not have analog inputs)
  • 8-bit analog output DAC
  • PWM outputs on any pin
  • Two I2C ports, one on the breakout pads, and another with STEMMA QT plug-n-play connector
  • Hardware UART
  • Hardware SPI on the high speed SPI peripheral pins
  • Hardware I2S on any pins
  • 5 x Capacitive Touch with no additional components required
• 3.3V regulator with 600mA peak output
• Light sleep at 2~4mA, deep sleep at ~70uA
• Reset switch for starting your project code over, boot 0 button for entering bootloader mode
• Really really small

Revision History:

• Before Feb 28, 2022 - Please note there is a hardware bug in the current revision of the PCB that causes deep sleep to draw ~6mA, these are marked hardware rev (B) on the back
• As of Monday, February 28th, 2022 - the onboard antenna has been rotated to give a better response. We've also fixed low power sleep mode, so deep sleep can get down to 70uA. These are marked hardware rev (C) on the back

Product Dimensions: 21.8mm x 17.9mm x 5.7mm / 0.9" x 0.7" x 0.2"

Product Weight: 2.1g / 0.1oz

Resources

• Detailed Guide to ESP32: Exploring Popular Models, Features, and Applications
• Installing and Configuring Arduino IDE for ESP32
• Arduino, ESP32, & Raspberry Pi Pinout Reference for I2C, SPI, and UART

This product can be found here:

• Adafruit
• Boards
• Development Boards
• ESP32 Development Boards
• Espressif
• Wireless Development Boards