Arduino now has an officially supported command-line interface. The project, called arduino-cli, is the first time that the official toolchain has departed from the Java-based editor known as the A… ...

Also, this project will allow you to send messages to your phone using the serial monitor when the Arduino is plugged into a computer. The presentation material and the code can be downloaded at ...

In the middle are options like this, which handle the CAN interface and are controlled via SPI (such as from an Arduino or Raspberry Pi).

Once the HIDUINO is loaded your Arduino can show up as any HID compliant device you wish, no extra drivers necessary.

Yes,we learned that we can take mobile phone camera modules from almost all mobile phones to inteface them with our advanced hobby electronics projects just as with any other standard add-on modules.

An Arduino can interface with them but the code is a bit tricky and to get a webpage of it starts costing alot. You can get a standalone server here but I have no idea how well they work.

While a Raspberry Pi is a full-fledged computer that can do more complex things than an Arduino microcontroller, it's not the best choice for every project.

The Arduino shield interface is designed for low cost, low pin count microcontrollers, which can potentially be an issue for professional embedded systems developers needing more.