Then there are the pins that double as communication pins ... one of the most significant differences between the Arduino Nano and Raspberry Pi Pico is the price. The official Nano board is ...

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).

[Tech2077] is one of the lucky ones who already got his hands on a Raspberry Pi. He’s been ... the logic level gap between the devices. If you’ve been working with Arduino, your add-ons ...