Browsing: Guide

Guide
0

Pulse-width modulation (PWM) is a technique that takes advantage an electronic device’s capability to rapidly “pulse” one of its digital pins between logic high and logic low voltage states. The idea is that the switching between the two voltage states in a desired pattern will produce an “average” voltage somewhere between the high and low voltage inputs. If, within a given period, the pin is at a high voltage level more often than a low one, an overall higher voltage (but less than the full strength input voltage) will be observed.

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
3

A while ago, we learned that one of the ways that Pmods are able to communicate with their host board is through SPI. We learned then that serial peripheral interface is a type of communication protocol where the “master” board and the “slave” device (in this case, a Pmod) are able to send bits of data to each other at the same time with the host board controlling the timing of the communication. Although this is a nice overview, it is my personal experience that theoretical overviews are not the most helpful in actually implementing what we are learning. This begs the question: how do you use SPI? Lets find out!

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
3

Who doesn’t love interactive LEDs? This project started because I wanted to make a simple circuit that I could later move on to a printed circuit board (PCB) that I designed myself. (The original goal was to learn PCB design and layout.) This idea was given to me by my manager, Larissa, and was inspired by Evil Mad Science’s Octolively. Being an analog enthusiast, I came up with my own design that doesn’t use any ICs.

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
5

Some of you may have wished at one point that there was a way to conveniently keep track of a series of inputs that you are providing to your system. Luckily, an array is an excellent way to solve this predicament, and it has the added bonus of being easy to use!

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
2

We have made a few posts showing off our 3D printers and some of the classes on 3D printing that we have done here at Digilent. Garrett Mace from macetech.com showed us some of the basics on how to use various 3D modeling software like AutoDesk Inventor, Autodesk 123D Design, OpenSCAD, MeshMixer, and SketchUp. Today, I’m going to introduce some of the basic modeling tools available in the free but robust Blender.

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
0

In 2010, I decided to go back to school and earn my degree. After a few semesters of class and a few months working part time retail at RadioShack, I had learned a few things and decided to start building. At the time, all I had were some Craftsman screwdrivers that my dad had given me for Christmas, a few pliers, some wire cutters, and a hammer. Basically the kind of stuff you would find in an all-in-one homeowner’s tool kit. Needless to say, those tools weren’t really helpful when it came to building a motion sensing AC switch, or soldering together some under-cabinet lighting. I needed to get the right tools for the job at hand.

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
0

Operational amplifiers (op-amps) are everywhere, in everything, and can do just about anything. Well, okay, maybe not quite, but there is no doubt that they are one of the most useful ICs ever to hit the market.

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
0

Are you wanting to build something that requires DC power but changing batteries would either be inconvenient or just plain annoying? Here’s a simple how-to for converting AC mains voltage to rectified and regulated DC voltage.

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
Guide
1

Earlier, I made a post on how a shift register is operated in practice. But what exactly can a shift register be used for and how does it work? As always, the answer will depend on what you are trying to do (yes, we do have to play by reality’s rules).

Share on FacebookTweet about this on TwitterShare on Google+Pin on PinterestShare on RedditShare on TumblrShare on LinkedInShare on StumbleUponEmail this to someone
1 5 6 7