Arduino团队将设计图上传到网上，任何人都可以复制、重设计甚至出售Arduino板子，人们不用花钱购买版权，连申请许可权都不用。 但是，如果你加工出售Arduino原板，版权还是归Arduino团队所有。 如果你是在基于Arduino的设计上修改，你的设计必须也和Arduino一样开源。

Getting down to Arduino basics, PWM output is possible in an Arduino (Uno) on its digital I/O pins 3, 5, 6, 9, 10, and 11. Here the “analogWrite” function can be used to set the PWM duty cycle.

The Uno Rev3, is a great beginner board as it's included in many starter kits. It's also complemented with a host of online resources that even without the official Projects Book from Arduino, you ...

This tutorial will guide you through the process of building a tachometer around an Arduino. Tachometers are used to measure rotation rate in Revolutions Per Minute (RPM). You don’t need much… ...