(often referred to as a "sis001" type board) is a portable balance trainer designed to improve coordination, motor skills, and core stability.
# 3. Compile and upload a blink sketch arduino-cli compile --fqbn esp32:esp32:sis001 blink arduino-cli upload -p /dev/ttyUSB0 --fqbn esp32:esp32:sis001 blink sis001 board free
module often utilized in amateur radio equipment, such as transceivers from the early 1980s. World Radio History (often referred to as a "sis001" type board)