PCB-MCU MCU-Core board Cavendish(卡文迪许) STM32 -> 3.0 & 3.14 CORE Software in here ! STM32 STM32F103RCT6/GD32 Cavendish-ARM V2.0 Cavendish-ARM V3.0 Cavendish-ARM V3.14 STM32F405RET6 Same as above ! ESP32 ESP32-S3 Cavendish-ESP V1.0 other: PCB-C51