sbc Google Coral Dev Board Google (Coral) NXP i.MX 8M (quad Cortex-A53 + Cortex-M4F) + Edge TPU coprocessor 2019
mcu STM32 "Blue Pill" (STM32F103C8T6) various (generic/clone boards) STM32F103C8T6 (ARM Cortex-M3) 2016