Can you do this with your USB Drive (Part 2)?

A short video on something you shouldn't do with just any USB drive. See it below or directly on YouTube.

Shock Testing Video

The next VIUD  video on shock, or acceleration, testing is now available! See it below or directly on YouTube.

Also look on our YouTube Channel for some hi-speed shock testing videos like this one:

Can you do this with your USB drive?

A quick demonstration of how tough the VIUD really is by holding it in my bare hand while in a 2000 °C flame for 30 seconds! See it below or directly on YouTube.

High Temperature Testing

The next VIUD testing video on high temperatures is now available! See it below or directly on YouTube.

Keep tuned for more testing videos soon!

Pressure Testing Video

My first VIUD video on pressure testing is up! See it below or directly on YouTube.

Now that I'm getting the hang of video recording and editing look for more testing related videos in the next few weeks!

Good News Everyone!

I've been busy over the last few weeks getting back up to full speed in the VIUD design and testing and there have been a few important things to note.

Most significantly, I contacted my USB circuit board supplier to check on prices and they have managed to drop by almost 50% since last year. This doesn't make too much difference on the 16/32 GB model prices but drops the final price on the expensive 256 GB by over $100! 

I've started to record some videos and figure out video editing. This is definitely outside of my comfort zone but I'm having fun learning something new. Look for some new testing videos here in the near future. 

I've also finally figured out and solved an issue with some USBs failing in the VIUDs after assembly. Look for a blog post on this subject in the next few days.

Last but not least, I've created an account on KickStarter and have been playing around with creating a project. I must say their web interface is one of the better ones I've used. I hope to launch the VIUD's KickStarter in a few weeks, after I record a few more test videos, so stay tuned!

The Finished Product!

While it took much longer than I had anticipated I'm happy to say I can hold in my hand the world's toughest USB drive!

The Completed Revision 5 VIUD Prototypes

The completed VIUDs are even better looking than the individual parts and work great. I've been carrying two in my pocket for the last two months and while they are definitely on the heavy side for a USB drive they are not excessively so. There's a bit of chipping on the corners/edges of the Aluminum model which is expected and probably mostly due to the Titanium model being next to it. The Titanium model still looks flawless.

The magnetic cap works great and is strong enough to hold the VIUD to the fridge door or other metal surface as designed. I haven't tested the lanyard attachment but my initial concern of the edges being too sharp were fortunately unfounded. I've only done a quick 3000 psi pressure test so far but both test units passed easily.

Assembly

Adding the Internal Epoxy

Assembly of the 15 prototypes went well but did reveal a few minor design and assembly flaws:

• The anodized threads were just barely too tight and required manual retapping. I'll specify a looser thread tolerance for the internal threads to compensate.
• The slots for the magnets were just barely too small and had to be made a bit larger. Slightly larger OD dimension for the slots are needed depending on how shock testing goes. I fear if I make it too loose the cap magnet will come free too easily.
• Weighing the amount of epoxy in the base worked great but the magnet caused havoc with the scale. Adding a few non-magnetic spacers fixed this easily.
• The scale used has an annoying tendency to turn off in the middle of deploying the epoxy into the base. Hopefully there's a way to disable the auto-power off feature or a different scale will be needed.
• The amount of epoxy needs to be reduced slightly as when it is cooked in the oven it expands and overflows. The overflow is actually good in a sense as it means there are no air pockets in the base but it requires more time consuming clean up afterwards.
• Oven baking to cure the epoxy worked just fine. The magnets help to keep the base secure the metal pan.

Baking at 90°C (200°F) to Cure the Epoxy

What Next? 

There will have be a small break in the VIUD development this summer due to my personal schedule...who knew getting married would keep you so busy! Sometime in the fall I'll get back into more testing of the finished revision 5 VIUD prototypes to see exactly what sort of punishment they can take.

Assuming no significant design change is required (I doubt it but you never know) I hope to be able to get a KickStarter going for the initial VIUD production run later this fall. Stay tuned to the blog for the eventual announcement.