ST takes flight in this upcoming Feather board. The new STM32F405 Feather designed by Adafruit runs CircuitPython at a blistering 168MHz – Adafruit’s fastest CircuitPython board ever!
Equipped with a STEMMA QT / Qwiic port, you can easily plug and play I2C sensors.
With CircuitPython basics running on this board, it’s fast to get all Adafruit’s drivers working, then use the built-in plotter in Mu to instantly get sensor data displayed within 3 minutes of unboxing.
With some caveats, you can use MicroPython, CircuitPython or Arduino IDE with this board. This board and chipset are new so expect rapid developments and updates!
- CircuitPython support is under development. With digital IO, analog in/out, I2C, SPI, PWM working so far, and more. For example, the SDIO SD card is not yet supported natively. DisplayIO is also not yet supported.
- Arduino is supported through STM32duino. There’s no auto-reset bootloader support yet, so you must pull the BOOT0 pin high and manually reset it before uploading. That said, STM32 support is excellent, and Adafruit were able to run just about every sketch Adafruit tried.
- MicroPython support is very solid but Adafruit does not provide MicroPython libraries for sensors!
Tested in Arduino STM32duino with all Adafruit FeatherWings, and only the RFM69/RFM9x libraries did not work (they are very platform specific). It’s an extraordinarily fast Feather and Adafruit’s first foray into STM32 – very exciting!
- STM32F405 Cortex M4 with 1MB Flash, 168MHz speed
- 3.3V logic, but almost all pins are 5V compliant!
- USB C power and data – Adafruit’s first USB C Feather!
- LiPo connector and charger
- SD socket on the bottom, connected to SDIO port
- 2 MB SPI Flash chip
- Built-in NeoPixel indicator
- I2C, UART, GPIO, ADCs, DACs
- Qwiic/STEMMA-QT connector for fast I2C connectivity
- Adafruit uses the built-in USB DFU bootloader to load firmware. It does not come with a UF2 bootloader.
- Dimensions: 52mm x 23mm x 10mm
- Weight: 6.2g
- 1 x Adafruit Feather STM32F405 Express