The Raspberry Pi is a credit card sized single-board computer developed in the UK by the Raspberry Pi Foundation with the intention of stimulating the teaching of basic computer science in schools.
In short, Pi is an ARM-based mini computer which has a credit card size.
Before reading this article, please make sure that you've read some other articles of mine on Pi, because this article is more or less based on them.
【1】实验目的 / Experiment purpose
Write a C program to control the direction & speed of rotation of a stepper motor through the GPIO on Raspberry Pi.