It's true: you can使用覆盆子Pito monitor and control real-world industrial devices.

Reliable Opto 22 G4 digital I/O and SNAP digital I/O now work with your Pi.

编程PI的最简单方法之一可能是Node-RED, designed by IBM Emerging Technologies.

Node-Red是一种免费的开源软件工具，可以将硬件设备，API和在线服务连接在一起。

You use pre-built nodes for the devices and software you want to connect. For example, we've built Node-RED nodes for our SNAP PAC programmable automation controllers. You can also download nodes for weather services, databases, and a whole lot more. All these nodes are free.

So, how do you get started with Node-RED on your Raspberry Pi? Opto 22's Benson Hougland explains the process with step-by-step instructions in his new blog post:如何使用节点红色和工业GPIO构建覆盆子Pi.

Take a look and get started!