Tag Archives: electronics

DIY LED Projects for Geeks

Do you remember these things?

Found one of these in an old trunk up at the cabin in the woods last year. Still worked.

That was the amateur geek electronics project of the 1950s and 1960s.

For younger kids, there is also the more recently developed Snap Circuits, which are pretty good and fun until you are about 8.

But today, with inexpensive microcontrollers like the Arduino and small computers like the Raspberry Pi,and significant advancements in LED technology, the game has been upped, and with the mere ability to follow instructions, you can make a plethora of projects that blink, whirr, and amaze your neighbors.

DIY 10 LED Projects for Geeks: Build Light-Up Costumes, Sci-Fi Gadgets, and Other Clever Inventions by Jon Baichtal (ed) provides instructions to get you up to speed with LEDs, to make a UFO, a dice roller, a music visualizer, an automated infrared remote control, an optical screwdriver, an LED costume, and numerous other things. Since you will want to solder many of these things (though you could get away with not for several of them) there is even a chapter on soldering.

This is not the most basic electronics book. Watch this space for a review of a recent and excellent volume that serves that niche. These projects are challenging, but they are also very adaptable. Though these are LED projects and thus light up, LEDs also admit infrared, so you learn to handle that technology as well. All project books have a couple of LED projects. This brilliant book focuses on the bright lights themselves.

The instructions are clear and VERY well illustrated. Each project comes with a very clear set of parts you’ll need. Many projects use Arduino controllers.

You will learn about available electronic components you may not have known about but will suddenly need. For example, there is a tiny card that goes on the end of a USB cable and allows serial output directly to an infrared stream. How cool is that? You can take over the world, with that!!!

I’m going to use the technology from one of these projects for a lamp for my bathroom, and I’m going to build a version of the digital dice roller. Had I gotten this book a few weeks earlier, Huxley would have gone out Trick or Treating as a light up flashing ghost in stead of a plain old ghost.

10 LED Projects for Geeks: Build Light-Up Costumes, Sci-Fi Gadgets, and Other Clever Inventions is not for the absolute beginner, but frankly, the unafraid beginner can do these project with some patience.

Just so you know, here is the list of contributors and their brief bios:

John Baichtal has written or edited over a dozen books, including the award-winning Cult of Lego (2011 No Starch Press), LEGO hacker bible Make: LEGO and Arduino Projects (2012 Maker Media) with Adam Wolf and Matthew Beckler, as well as Robot Builder (Que 2013), and Hacking Your LEGO Mindstorms EV3 Kit (Que 2015). He’s hard at work on his latest project, a compilation of Minecraft projects for Maker Media. John lives in Minneapolis with his wife and three children.

Contributors to 10 LED Projects for Geeks:

Kaas Baichtal became interested in computers and electronics around age 12, taking every available electronics class. As a technician Kaas worked mostly in the entertainment industry, doing equipment repairs and travelling system installs for theatrical dimmer manufacturers AVAB America and Electronic Theatre Controls (ETC) as well as multimedia integrator BBI Engineering. Kaas has run her own servers at home since 1998 and specializes in writing custom code to solve real life problems.

Matthew Beckler is a computer engineer who lives in Minneapolis with his wife and two cats. His day job usually consists of writing firmware for fancy microcontrollers, and he is a co-founder and engineer of a fun side-hustle called Wayne and Layne, where he and Adam Wolf design and sell electronic kits and help create interactive museum and art exhibits.

Kristina Durivage is an independent software developer by day and a hardware hacker by night—specializing in data visualization and making the world a brighter place with LEDs. Her work is collected at portfolio.gelicia.com and her opinions and cat pictures can be found on Twitter, @gelicia.

Lenore M. Edman is a co-founder of Evil Mad Scientist Laboratories, a family run company that designs, produces, and sells hobby electronics kits, drawing machines, and retrotechnological objects. She writes for the accompanying project blog on the topics of electronics, crafts, cooking, science, robotics, and anything else that catches her fancy. Many of the blog’s projects have been featured at science and art museums and in Make, Wired, and Popular Science magazines. She holds a B.A. in Interdisciplinary Studies; English and Greek.

Mike Hord has been working at SparkFun Electronics designing products and projects for makers for six years. His making skills run the gamut from metalworking, woodworking, and 3d printing to coding and circuit design. When not creating his next Big Hack, he’s raising two small children to question the veracity of everything except the need for toothbrushing.

James Floyd Kelly is a full-time technology writer in Atlanta, Georgia. He has written over 25 books on a mix of topics that includes Open Source software, LEGO Robotics, basic electronics, Arduino programming, and more. He and his wife have two young boys who are showing the early signs of Maker-ness.

Michael Krumpus has a master’s degree in computer science and 25 years of experience as a software engineer. He discovered a passion for electronics design later in life and formed a small electronics company, nootropic design, where he designs and manufactures innovative electronics for hobbyists, designers, educators and industry. Michael is based in Minneapolis, MN.

Windell H. Oskay is the co-founder of Evil Mad Scientist Laboratories, a Silicon Valley company that has designed and produced specialized electronics and robotics kits since 2007. Evil Mad Scientist Laboratories also runs a popular DIY project blog, and many of its projects have been featured at science and art museums and in Make, Wired, and Popular Science magazines. Windell was also a founding board member of OSHWA, the Open Source Hardware Association. Previously, Windell has worked as a hardware design engineer at Stanford Research Systems and as a research physicist in the Time and Frequency Division of the National Institute of Standards and Technology. He holds a B.A. in Physics and Mathematics from Lake Forest College and a Ph.D. in Physics from the University of Texas at Austin.

Adam Wolf is a cofounder of and engineer at Wayne and Layne, where he designs DIY electronics kits and interactive exhibits. He also does computer engineering and embedded systems work at an engineering design services firm in Minneapolis, MN. When he isn’t making things blink or helping computers talk to each other, he’s spending time with his wife and sons.

Recommended music player and radio for the gym

Several weeks ago I tried once again, after many prior ill fated attempts over several years, to get a device that would play music, audio books, and be a radio. The audiobook part wasn’t the most important part, but the ability to play various audio files AND act as a radio AND not be a big giant thing I had to strap to a body part AND be sturdy were all important. This latest attempt has gone very well, and I now have a device that is very nice and therefore, I figured you’d want one too.

This time I tried the AGPtEK M20S 8GB Mini MP3 Player(Expandable Up to 64GB), Lossless Sound Touch Button Metal Music Player with FM/Voice Record,Silver and I love it, enough to recommend it.

Here are some of the specs from the manufacturer:

<li>Tiny and Solid Construction: The metal body makes it sturdy with some weight. Mini and portable,only 3 x 0.3 x 1.2 inches.</li>

<li>Lossless Sound Quality: High sound quality brings crystal clear sound wherever you are. Support audio formats: MP3/WMA/OGG/APE(Normal/Fast)/FLAC/WAV/AAC-LC/ACELP.</li>

<li>Easy Operation with Touch Button: Designed with 6 touch buttons and 5 metal buttons,independent locking and volume control. Fashion and convenient operation.</li>

<li>Multi-function: With music play, FM radio, FM/voice recording, resume playback, folder view, clock screensaver, bookmarks etc.</li>

<li>Long playback time: Up to 14 hours of audio playback with 2 hours of full charge. 8 GB digital storage media capacity, supports up to 64 GB (not included). To avoid incompatibility, please use AGPTek Memory Card.</li>

Did you see that it holds a microSD? I’ve not used that feature, but that is pretty cool. It has folders you can divide the music up in, which is, essentially, a very efficient way of making a play list. I’ve also not tried to record music off the radio. I’ll probably never listen to music on this radio. I may, however, record Rachel Maddow now and then..

At this point, being fairly new, I think it goes well beyond the 2 hour charge estimate.

It is complicated, this little device, and therefore can not be operated with a single button like a Shuffle. So, it will take a little while to lerarn how to use it (perhaps a full five minutes). Just remember, the reverse U button backs you out, and that’s a great way to change modes. The menu hamburger button, while listening to a radio station, lets you make a preset or change the presets.

I’m not sure that I loved the headphones. I remember not being too impressed with how they fit, but that’s going to be true for everybody vis-a-vis various headphones. I just plugged in my favorite headphones and used them. I’d grab them and look them over one more time to give you my opinion, but it is possible that the cat ate them.

Also, I just noticed, that if you get the AGPtEK now and buy an additional item with it, like a microSD card or a wall charger, you can get a discount on something. I’m not in the market for any of those things so I didn’t look closely.