An Arduino is a much better choice than a Raspberry Pi for tasks that require real-time input and responses. While a Pi can ...

The little computer project uses a real Z80 chip and uses an ATMega32A for almost all the support functions. It generates the clock, acts like a serial port, acts like a disk drive, and so on.

For beginners learning to program Arduinos, a web-based, fully networked developer environment called Codebender could drastically reduce the learning curve.