TL;DR
The SN1 Solar Node is a new development board from Granz Scientific LLC that utilizes the ESP32-C3 microcontroller, designed specifically for off-grid Internet of Things (IoT) applications. This board stands out due to its IP67-rated enclosure, which provides dust and water resistance, along with an integrated solar panel that allows for efficient solar charging. The SN1 also supports 18650 lithium-ion batteries, making it a flexible option for powering various projects.