Swan From Blues Wireless: a STM32L4 Feather-Compatible Board #FeatherFriday #Feather @blueswireless
Swan is a low-cost embeddable STM32L4-based microcontroller designed to accelerate the development and deployment of battery-powered solutions. It is especially useful for applications requiring large memory or a high degree of I/O expandability at an affordable cost, such as edge inferencing and remote monitoring.
Uniquely for Feather-compatible boards, Swan is designed to satisfy developers’ needs that span from early prototyping through high-volume deployment. Developers may begin to use Swan in conjunction with Adafruit’s myriad sensors and FeatherWing-compatible carriers. Due to its novel design, for high-volume deployment the low-cost Swan can also be soldered directly to a parent PCB integrating those sensors, utilizing the full range of Swan’s I/O capabilities.
The board has three independent power options – USB, Battery, or Line power – and provides a software-switchable 2 Amp regulator for powering external sensors. When operating in its low-power operating mode, the entire Swan board commonly draws only about 8uA while retaining all of its memory, making it quite suitable for battery-powered devices.
Specs:
Feather-compatible dev board, powered by an STM32L4+ @ 120 MHz with 2MB of Flash and 640KB of RAM
Castellated-edge access to 55 GPIO ports including:
8 analog
16 digital
4x I2C, 3x SPI
USB OTG full speed
1x 14-channel DMA
tRNG
12-bit ADC, 2 x 12-bit DAC
low-power RTC, and CRC calculation peripherals
Plenty of Flash and RAM for edge ML workloads or complex applications
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