"Not *only* useless to non-military users, also useless to the vast majority of military users, who have always had the option of using encrypted codes technically, but bureaucratically, distribution of the codes was such a secret that it was limited…"
Squalish's Discussions
Two Questions on Better Precision GPS
Started this discussion. Last reply by swordfishBob Dec 24, 2011. 13 Replies 0 Likes
Firstly, Real Time Kinematic correction involves a stationary base station unit and a moving rover unit for differential correction. The drift in the base station's satellite timings is used to…Continue
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Squalish commented on Chris Anderson's blog post New stamp-sized GPS module claims to be spoof-proofSqualish commented on ronald mallett's blog post UAV for inside Nuclear Power Stations"They determined that they would use 'Robots' to clean it up, but the radiation destroyed their electronic circuits. The robot team didn't want to admit failure. So the project used what are euphemistically termed 'Bio…"
Squalish replied to dhrowe99's discussion dronepedia new user creation broken"Deadbeat admin here.
What happened was a combination of an overwhelmingly large amount of captcha-defeating spam, and efforts to fight it which took up increasingly large amounts of my time... right up until one extension broke Mediawiki for…"
Squalish commented on Azam Shahani's blog post Incredible Flight Endurance!"Here's how you do an endurance 'record' run, in order of importance:
1) Saturate payload capacity with battery, sacrificing maneuverability, useful gear, and wind compensation
2) Tune. Test combinations of prop, motor, and battery…"
Squalish commented on Max Levine's blog post The easiest way to mount APM2 on ArduCopter."Something like this."
Squalish commented on Max Levine's blog post The easiest way to mount APM2 on ArduCopter."So my impression is that an ideal mount would be something along the lines of: four LIPOs mounted at the ends of a rigid cross for a large moment arm, with the PCB at the center, attached to the rest of the frame by tight rubber bands which have a…"
Squalish commented on Jiri Pistek's blog post 40mm retractable camera turret"There is another turret product that may be of more use for aerial photography, rather than flexible FPV.
A truncated spheroid that covered perhaps 45-60 degrees forward, back, and to each side would allow you enough play to maintain a nadir-looking…"
Squalish commented on Chris Anderson's blog post Great lecture on the Outback Challenge by APM developer Andrew Tridgell"Can you guarantee there won't be any reflective shirts on the field?
If you can get the photogrammetry down pat, a few oblique, high-resolution camera shots from a DSLR at 120m would give you the equivalent of the 500m scout mode, without…"
Squalish commented on Chris Anderson's blog post Great lecture on the Outback Challenge by APM developer Andrew Tridgell"It may be time that Ardupilot addresses better altitude sensing. We could be using a barometer / GPS fusion approach that would:A) Detect altitude from GPS at launch, use that to calibrate pressure sensor for baseline air density gradient, in…"
Squalish commented on Chris Anderson's blog post Great lecture on the Outback Challenge by APM developer Andrew Tridgell"3 questions-
Why do they need 1/15000s exposures?
How is altitude determined for geofencing?
How are images geotagged and photogrammetrically referenced accurately enough for a precision drop?
Very cool stuff."
Squalish commented on Gary Mortimer's blog post New colour night vision camera"Color night vision? What is that supposed to mean?"
Squalish commented on Radoslaw Kornicki's blog post Android based UAV controller is coming!!!"If you used one of the new color epaper displays, that would solve a major problem with autopilot groundstations - the awkwardness of a laptop in full sun on rough terrain. You would need to make sure it's comfortable in the hands, though."
Squalish commented on Farooq Niaz's blog post Ideal Motors for Quadcopters:"Items 1-4 are not objectively good: it is entirely possible to have those numbers go *too far* for a given AUW, number of motors, prop, and voltage. Finding the optimal solution involves varying these numbers along with props.
In the end, the…"
Squalish commented on iangl's blog post Found cheapest-ever LIDAR! Seems great for UAV use!"The expense and weight of an Aerial Laser Scanning system (ALS) is not just a rangefinder. It is the mount, the rotating mirror, the optical encoders that track this mirror, the memory and data processing chips, the equipment pod for the unit…"
Squalish commented on Radoslaw Kornicki's blog post Finally one of my project comes to an end !!! All in one UAV controller !!!!"Nice work!
Does it have a name?
Will you be producing these commercially? Is this open hardware?
How do you think it compares to ACM 2.0?"
Squalish replied to Julian's discussion Inexpensive GPS Position Logger"The default entry point is presently the $60 Holux M-241."
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Squalish's Blog
Announcing... Dronepedia.com Wiki
Posted on February 3, 2011 at 4:30pm 7 Comments 4 Likes
For me, one of the things that always seems to be missing in many hobbies is a solid wiki. Oh, they try their damnedest to consolidate data from ever larger comment threats and FAQ stickies, but lots of useful advice is only found after a user has been browsing a site for weeks.
A month ago a user requested a DIYDrones wiki, and the admin here welcomed the users to put one together, since Ning proved incapable of doing it. Then I realized - I can do that! …
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Season Two of the Trust Time Trial (T3) Contest has now begun. The fourth round is an accuracy round for multicopters, which requires contestants to fly a cube. The deadline is April 14th.A list of all T3 contests is here.
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