the Raspberry Pi 4 has six SPI controllers, six I2C controllers, and six UARTs – all on its 40-pin header. You can’t make use of all of these at once, but with up to four different connections ...

For years, Raspberry Pi has been known for ... be connected via standard protocols like UART or I2C). It can also be used to convert some GPIO pins to existing protocols (such as extra SPI pins ...

The P42 Pico2 M.2 may look like an M.2 module, but it's actually a Raspberry Pi RP2350 development board in M.2 2230 form ...