We thought that connecting an Arduino to a Raspberry Pi was overkill ... [Jan] uses the PHP serial class to communicate between the RPi and Arduino (dead link; Internet Archive).

Understanding the differences between the Arduino and the Raspberry Pi is crucial ... but it has a good range of communication ports, too. You can effortlessly add internet connectivity to ...

Such is the case with the working transputer that [Amen] has built using a Raspberry Pi Pico. For a thorough ... each transputer chip has four serial communication links for connecting to other ...