an ESP32, and an STM32F103. The STM32 appears to be dedicated to providing the board with USB to UART translation, something the first RISC-V compatible Arduino solved with an FTDI chip.

The Arduino UNO R4 Minima comes equipped with the ... the UNO R4 WiFi further merges it with the ESP32-S3 from Espressif, offering both Wi-Fi and Bluetooth capabilities. On top of providing ...