Swan

Swan is a low-cost, embeddable STM32L4-based microcontroller designed to accelerate the development and deployment of battery-powered IoT solutions. It is especially useful for applications requiring a large amount of 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, we designed Swan to satisfy developers’ needs spanning from early prototyping to high-volume deployment. Developers can 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 enti