You would be very hard pressed to find any sort of CPU or microcontroller in a commercial product that uses anything but ...
The firmware of the Flipper One is already publicly available, and there's a lot of interesting tech.
Raspberry Pi Pico microcontrollers come with a variety of different features for a few bucks, and a few interesting ...
Manufacturer Cologne Chip solders its GateMate A1 onto a module that fits I/O boards for the Raspberry Pi CM5.