Archive for the ‘Engineering’ Category

Check out the live stream as we go about making our game! Watch our video last night to see what we are doing!

Follow us on here, on Twitter @KK4LWR or on Youtube!

Makeathon 0.0 Team MakEARs

Posted: September 14, 2019 in Engineering, News
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20190913_230304370_iOSSo the Makeathon has started. A few of my friends from work are teaming up for this fundraiser for The Maker Effect Foundation. You can follow us live on this blog, or on my twitter @kk4lwr or at youtube.com/08milluz.

Below is the intro video from our first day! Check it out!

New Test Equipment

Posted: February 7, 2018 in Engineering, News

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I recently got a brand new oscilloscope and DC power supply for my home maker lab. These two tools enable me to analyze signals and power prototype circuits. These are also great instruments for any maker. Let me explain why after the break!

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I love watching Battlebots. As an engineer I really enjoy seeing the design and strategy of each bot. I was delighted to find a box from VEX at my front door recently. Luckily I opened it right away (I thought it might be parts for a FIRST team) and found a Minotaur set. Minotaur is one of my favorite bots in the show. This bot from Brazil and is a joy to watch. Its spinning drum eats through other bots. Follow me past the break to see what I thought of this building set.

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This year I ventured up to Dayton Hamvention and had my sights set on getting a new radio. I was able to purchase a Connect Systems CS800D dual band FM/DMR radio. I naturally removed the cover to get a peak under the hood as seen in the photo above. Once I was done understanding the basic layout of the PCB (note the UHF PA mounted to the back of the case, top of the image, and VHF PA at the front of the case, bottom of the image). I found it interesting how they fit so much radio into such a tiny package.

After some bench testing, I decided it was time to figure out how to mount it in my car. With a remote control head, I can simply mount it with the same setup as my Yaesu 7900R control head (which has since been sold). One problem, the remote control head mounter supplied with the radio does not match the mounting plate I have in my car. To fix this, I need to create a new mounting plate (or at least an interface plate). I started up Autodesk Inventor. Follow me after the break for more details or check out the part on Thingiverse!

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20161201_212909539_iOSBack in November, I got a Phantom 3 Standard drone. The stock drone is a lot of fun, but it could use a couple upgrades. The first upgrade wanted was to replace the stock phone mount with a tablet mount. The larger screen on the table makes it easier to track objects. I got some really cool photos of an RC DC-3 flying around my drone at the local flying field, but following the small plane was difficult on the tablet, likely impossible on my phone.

The original phone mount is not very durable and after using it a few times, the plastic broke as you can see in the photo. DJI did send a replacement that was metal, but it would still limit me to my cell phone.

I found a tutorial on Phantom Help that used the DJI Inspire 1’s tablet mount. I initially decided to just screw the tablet mount into the plastic. I used some glue to add support. The upgrade was well worth it and it functioned well when out at the field flying.

However, within a week the mount broke. The plastic shell was fine, but the metal support broke. You can see the damage in the photo below. To be fair, this was after shipping my drone to my parent’s house for the holidays. While I packed the controller well, it appears some of the packing air bags broke in transit. I am still not quite sure how the plastic shell escaped damage (especially since it looks like the metal was crushed ).
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Once I was home, I decided to order the metal insert. The threaded insert would allow me to remove the mount for shipping. To accommodate the new insert, I had to make the hole larger. I screwed the insert into the plastic and attached the nut. To make sure it stays secure, I used some hot glue. I also used hot glue to hold down wires that I had to reroute after the install.

The picture of the final install is below. I highly recommend this upgrade to anyone that got a DJI Phantom 3 Standard for the holidays! I also picked up a hard shell case for the drone and the accessories. For return shipping to Florida, I did remove the tablet mount and used the case. Both the controller and drone returned in perfect condition. I can’t wait to start flying again! 20170112_013145784_iOS

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One of the awesome projects at Maker Faire 2016 was creating a drone. Radio Shack had a free workshop using their DIY Drone Kits. Naturally I got a kit and quickly assembled it. However, my drone piloting skills are still developing and this quad has had more than a few rough landings. It wasn’t long before the original airframe needed to be replaced. A couple weeks of work later, I was successful and the replacement airframe can be found on Thingiverse! Follow me after the break and I’ll share all the details on my latest project! (more…)

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If you have launched EV3-G recently, you probably discovered that there is a new update! LEGO has released version 1.2.2 to address the “VM Program Instruction Break” bug. Be sure to update your software to the latest version. The bug did not affect the firmware on your EV3, just the compiler in EV3-G.

The Seshan Brothers, over at EV3Lessons.com, have an excellent overview of the bug.

You can download the latest versions of the LEGO MINDSTORMS programming software here!

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As I mentioned last week, I want to share a really fun robot. Sorry for the delay in this post, but I needed to make a quick video of the footage for Youtube. The Maker movement is all about fusing different mediums to create something unique. For this ROBOT MAK3R, that means mixing 3D Printing, LEGO MINDSTORMS, Spider Wire, and a GoPro action camera.

Capturing events is always a challenge for me. While I am displaying, I am typically very busy answering questions and meeting everyone. I really wanted a way to document these awesome events that still allowed me to be social. Sounds like a robot to me! With some on-site programming I was able to achieve this goal! While the bot needed a bit of tuning, movement along its wire was smooth and pan and tilt controls worked as designed! Not bad for a quick build! Check out the footage from World Maker Faire 2016 and learn about this awesome bot after the break!

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This week I want to share a video of a presentation I made back in July on Digital Mobile Radio or DMR. DMR is a cool technology for commercial and amateur radio. It uses TDMA technology to enable two independent conversations on one frenquency at any given moment. Check out the video above for an overview of multiple digital voice options in amateur radio, as well as some in-depth discussion on DMR. Sorry the lighting on me is dim in the video. It was lowered to help the contrast for people attending live.

If you enjoyed this video, I will be hosting a live Introduction to Amateur Radio next week on Thursday! Stay tuned for more details and links to the live stream in a bonus blog post next week!