February 2012
Beginner
100 pages
2h 6m
English
Content preview from Getting Started with NetduinoBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3. First Projects
Microcontroller boards like Netduino live in a realm that bridges software and electronic hardware. The Netduino itself is the bridge, and your Netduino app determines how software and hardware talk to each other. This means that one of the fundamental activities you’ll engage in is signaling: your app must send signals over digital outputs and receive signals on digital inputs.
These digital signals are represented in your app’s code as binary 1s and 0s. Usually, 1s are represented by a higher voltage across a wire (on Netduino, that’s 3.3 or 5 volts) and 0s are represented by a low voltage across a wire (on Netduino, 0 volts).
Using these 1s and 0s, you can send high and low voltages to electronic components like LEDs and relays (turning them on and off). You can also receive high and low voltages from components such as pushbuttons: when your app receives a 1, it means the button is pushed.
Both Netduino and Netduino Plus have an onboard LED that can be controlled from code. As a first project, you’ll learn how to send digital 1s and 0s by blinking this LED. Later in this chapter, you’ll learn how to read the state of Netduino’s onboard pushbutton.
Start Visual Studio
Start Visual C# Express 2010 (if you use the full version of Visual Studio 2010, start Visual Studio 2010 instead). The installer (see Step 1: Install Visual Studio Express) created a folder and shortcut for this program in your Start menu under All Programs (Windows Vista or Windows 7) or Programs ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.