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Project Hathor - 2000 Volt Test Firing
Posted by Krux on Saturday February 27, 2016 @ 11:54pm
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More fun with the ring launcher, Project Hathor.

After the catastrophic failure of the first coil plate, we made a new one out of sturdier material, which hopefully should hold up better.



After the 2000 volt firing, we had yet another hard drive platter which now lives on the roof. And had to restring the coil, since firing it at those voltages caused enough force to break most of the wire ties holding the 10 gauge wire in place. Since the backing plate stayed in tack, it was quick to repair. And the rest of the night was spent with some lower powered tests under 1200 volts.
Project Hathor - Ramping Up
Posted by Krux on Thursday February 25, 2016 @ 11:25am
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Last night I shot some video of some of the testing of Project Hathor.



As you can see the project has been a great success, and after some minor repairs, will be ready for the Las Vegas Mini Maker Faire this Sunday, February 28th.
Ring Launcher Coil Failure
Posted by Krux on Wednesday February 24, 2016 @ 11:26pm
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Failure is not bad. It's how we learn. Today I learned that there are significant forces required to launch a 3.5" hard drive platter higher than a building that has 35 foot ceilings. These forces happen to be more than can be with stood by a 1/4" piece of acrylic, such as that used to hold the coil of the ring launcher. To be fair, it did take several higher powered launches before it was well and truly pooched.



The above started as a crack, and then completely shattering. This part will be replaced with something stronger before the Mini Maker Faire this Sunday. However I did successfully test the ring launcher up to a bit over 1700 volts so far. At the show, due to ceiling height restrictions, I'll have to keep it to a little over 400 volt launches. Though I'll likely take the launcher outside at some point for a larger powered firing.
Final stretch, Ring launcher build complete
Posted by Krux on Tuesday February 23, 2016 @ 02:05am
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I've been working on Project Hathor, my 2KV ring launcher. Since my last update I've been spending a lot of time finalizing the design, ordering any critical parts, as well as 3D printing most of what I was going to need for assembly. However this past weekend was the last weekend I was going to have available to finish the project on time for the Las Vegas Mini Maker Faire, which is taking place next Sunday, so it was time to finish the build.

So this past weekend I spent assembling all the pieces and parts I have been making and otherwise collecting into a working ring launcher. I started this project ages ago, so with my four day weekend I spent the time lasering, 3D printing, machining, soldering, and wiring.

With everything designed in Sketchup, I turned this:



Into this:



The end result looks absolutely gorgeous. The case is made from 1/2 laser cut acrylic. I used my 3D printer to make all the connecting pieces, as well as the parts for the custom designed high voltage contactor.

Video of the first test is here. I ran a low power test at 400 volts, and it performed exactly as designed.

https://youtu.be/fqBPMTmn23Y

The pictures of the build are located here:

https://krux.org/gallery/index.php/electronics/Ring-Launcher

And the project details are here:

https://krux.org/article/Project_Hathor
So hey about that Ring Launcher...
Posted by Krux on Wednesday January 20, 2016 @ 01:29am
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Hooo boy, over a year since my last update. I've been bad about update my site with my project updates, so here is a step toward fixing that.

We have the Las Vegas Mini Maker Faire coming up on February 28th. Details can be found over at http://www.makerfairevegas.com . So for this I want to finally finish work on my ring launcher, Project Hathor. I had built the capacitor bank awhile ago, but the project has been gathering dust, and being moved back and forth from SYN Shop in the hopes of working on it. Though more just gathering more dust from new and interesting places. Well nothing like a deadline to motivate you, so here we go.

I even had time to make a quick video update on the project.



Details on the capacitor bank and contactor build are here:

Project Hathor - Capacitor Bank and Contactor

I'm really happy with how the contactor turned out. Next steps are to wire up the charge and fire control circuitry, and of course building the actual coil, and putting it all in a case.
Starting a Ring Launcher Project
Posted by Krux on Tuesday December 2, 2014 @ 11:43pm
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Starting on my next high voltage project, which is going to be a ring launcher. A ring launcher, if you are not aware is a device which builds up a charge in a capacitor bank and then releases it all at once into a coil producing a magnetic field. This magnetic field then creates a current in an aluminum ring, such as a hard drive platter, which then in turn produces an opposing magnetic field. As the two magnetic fields repel each other, this causes the ring to be shot up into the air in a dramatic fashion. It's science, and it's fun, and I want to build one. After some thought I decided that Project Hathor was an appropriate name for this project.

The first of the parts have been rolling in. Capacitors, HV transformer, power resistors, relays, and copper bar.


Project Icarus photos
Posted by Krux on Tuesday October 7, 2014 @ 11:07pm
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My Tesla coil, Icarus has been completed for awhile now. However in the rush to get everything finished on time for the Las Vegas Mini-Maker Faire, I didn't take the time to properly document everything. However, I finally got back to the project and uploaded some of the photos I did take while building the coil, as well as include some new ones of the finished Tesla coil.

Here are the details and glamour shots you have been waiting for.



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