Designed by Granz Scientific LLC, the SN1 Solar Node is an ESP32-C3-based IoT node/development board designed specifically for off-grid IoT projects. …
… It’s released as open hardware under the CERN-OHL-S v2 license, with complete design files available, making it suitable for privacy-focused smart-home automation, DIY voice assistants, and hardware-reuse projects. …
… The ESP32-S3 version is designed mainly for Home Assistant integration via ESPHome, whereas the ESP32 version is designed for standalone audio streaming software such as Squeezelite-ESP32 and Snapclient. Both versions use the same hardware design and audio components. …