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Vassilis commented on Vassilis's blog post Testing of the CHR-6D IMU and DCM in a quad-rotor
"I updated my blog with some details and a picture
http://vrhome.net/vassilis"
Jan 4, 2010
Vassilis commented on Vassilis's blog post Testing of the CHR-6D IMU and DCM in a quad-rotor
"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/B00..."
Jan 2, 2010
Vassilis commented on Vassilis's blog post Testing of the CHR-6D IMU and DCM in a quad-rotor
"I used a Dow Corning dielectric gel (silicon based, two part gel), I will look-up the part number and let you know."
Jan 2, 2010
Vassilis posted a blog post
For those of you that have a CHR-6D IMU, I thought that you might be interested on the testing I have done on a quad-rotor. I basically took the open source software that comes with the IMU and implemented Bill's DCM algorithm on the on-board STM32…
Dec 31, 2009
Vassilis commented on Chris Anderson's blog post T3 Contest, Round 3
"Video from the last few minutes of the flight.

YouTube Video"
Nov 8, 2009
Vassilis commented on Chris Anderson's blog post T3 Contest, Round 3
"Far from a winning entry but we got a break in the weather around here so I decided to give it a go. I used my EasyStar with a 2200mAh battery and all video equipment (pan/tilt pod, camera and transmitter), so there is no way I can compete with…"
Nov 8, 2009
Vassilis left a comment for William Premerlani
"Bill,

The only other gyro I have used is the IDG-500 and it was sensitive to vibration to the extend that at high throttle the bias would drift.

Vassilis"
Nov 7, 2009
Vassilis commented on Chris Anderson's blog post T3 Contest, Round 3
"Gary, Chris: why put the limitation of a single ascent/descent per circle? If for example my model can climb up and down twice in a single circle will that be acceptable (while not exceeding the 400ft limit)?

If a single ascent and descent is…"
Oct 28, 2009
Vassilis commented on Jano Visser's blog post Paparazzi I2C programming
"Using the i2c library in Paparazzi is very easy. I used it a few weeks ago to interface with the EagleTree airspeed and altimeter sensors. Have a look at the baro_ets and airspeed_ets files in the sw/airborne directory."
Oct 23, 2009
Vassilis commented on Chris Anderson's blog post T3 Contest, Round 2--UPDATE: Deadline extended (and new contest previewed)
"I agree, I can not think why there should be any restrictions on the pattern, number of cycles or climb per cycle. The objective should be simple: achieve the maximum possible cumulative climb without going above 400' and while staying within a…"
Oct 18, 2009
Vassilis commented on Gary Mortimer's blog post The next T3 round, that would be round three! T3 3
"Sounds like an interesting challenge, I am just not sure the weather will allow me to try it out. Will there be any restrictions on the pattern and altitude range we will be flying or we will simply look at the accumulated altitude when climbing? If…"
Oct 2, 2009
Vassilis commented on Chris Anderson's blog post T3 Contest, Round 2--UPDATE: Deadline extended (and new contest previewed)
"@steve

Yes, the flight plan is basically circles at each waypoint with conditions to proceed to the next waypoint when a certain heading is reached. The radius of each circle is configurable through the flight plan."
Sep 20, 2009
Vassilis commented on Chris Anderson's blog post T3 Contest, Round 2--UPDATE: Deadline extended (and new contest previewed)
"Here is my first entry, 236 seconds and within 5m from the altitude targets (at the waypoints). Same setup as last month (EasyStar with Paparazzi, no I did not have time to build the FunJet :-). This run was at about 60% throttle. I will probably…"
Sep 19, 2009
Vassilis commented on Chris Anderson's blog post Announcing the official DIY Drones Trust Time Trial (T3) Contest
"Thanks all it was fun! Looking forward to the next round, hopefully I will not need to run my poor EasyStar at full throttle all the time it has been abused enough :-)...

For me the main challenge was the development of the flight plan, I quickly…"
Sep 1, 2009
Vassilis commented on Chris Anderson's blog post Announcing the official DIY Drones Trust Time Trial (T3) Contest
"Following is the video from the onboard camera and the required fun element...

Link to YouTube video"
Aug 31, 2009
Vassilis commented on Chris Anderson's blog post Announcing the official DIY Drones Trust Time Trial (T3) Contest
"I will not give up without a fight :-). Decided to take a ride to the field with the family and give it one last try, I was able to complete the course in 49.5 seconds. I did a few minor changes to the flight plan and increased the maximum roll…"
Aug 31, 2009
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