Comments for Vassilis' Projects

Comment on IMU potting in gel by OpenUAS

OpenUAS — Fri, 22 Jan 2010 23:04:15 +0000

You could add microbaloons to make it lighter, and see if it still works well enough.

Comment on Direction Cosine Matrix implementation for the CHR-6d IMU by OpenUAS

OpenUAS — Fri, 22 Jan 2010 23:01:38 +0000

And again.., great work! When it gets spring over here I can perform some paparazzi tests, give you some log to improve results if needed. THX

Comment on IMU potting in gel by pkrobot

pkrobot — Sun, 17 Jan 2010 20:28:23 +0000

Vassilis,

That’s a very clever idea. I too have been investigating means of reducing vibration, but I was looking in the direction of active vibration/noise cancellation. I’ve seen something similar to what you’ve done in rockets with large g forces, to protect electronics. Also, in avionics, at times they pour epoxy on electronics circuits to protect it against vibration. Do you have any comparative results to show quantitative analysis for before and after, and how it would compare to let’s say if you only used shock mounts? Even without any comparative analysis, you can still stay that it will protect the circuit.

Again, a very clever idea.

-pk

Comment on IMU potting in gel by Vassilis

Vassilis — Sat, 09 Jan 2010 04:24:11 +0000

It is in a epoxy mixing container, the ones you get for a hobby shop, I had to cut it down a bit shorter. I will try to get a side view.

Comment on IMU potting in gel by Jamie Ahmed

Jamie Ahmed — Fri, 08 Jan 2010 13:41:20 +0000

Very cool.

What type of container is it in? Any chance of getting a side view as well

Nice work.

-Jamie

Comment on Quad-rotor demo with CHR-6D IMU and DCM algorithm by Vassilis

Vassilis — Tue, 05 Jan 2010 02:37:40 +0000

You can contact me directly through the Contact (http://vrhome.net/vassilis/contact-me/) page.

Comment on Quad-rotor demo with CHR-6D IMU and DCM algorithm by Vladimir

Vladimir — Mon, 04 Jan 2010 20:19:23 +0000

Dear Vassilis.
How to contact with you by e-mail?

Comment on Quad-rotor demo with CHR-6D IMU and DCM algorithm by Vassilis

Vassilis — Sat, 02 Jan 2010 22:13:01 +0000

The gel is the Dow Corning Sylgard 527, I used 70% part B and 30% part A. Following is a link:

http://www.amazon.com/Dow-Corning-DIELECT-SYLGARD-DIELECTRIC/dp/B001E99I7C

Comment on Quad-rotor demo with CHR-6D IMU and DCM algorithm by Jamie Ahmed

Jamie Ahmed — Fri, 01 Jan 2010 15:58:12 +0000

Looks very stable! What kind of gel did you use for the IMU board?

Congrats!

-Jamie

Comment on Direction Cosine Matrix implementation for the CHR-6d IMU by Vassilis

Vassilis — Thu, 31 Dec 2009 16:11:27 +0000

Yes, actually for fixed wing aircraft you can you the GPS heading. However for the GPS heading to work you need forward movement, this is not a problem for a fixed wing but for a VTOL it will not work.

Happy new Year to you too.