Map Calibration using Affine techniques -Has anyone out there done any work on map calibration using 3 or more known points on a paper scanned map, or a Google Earth map? As you know, you cannot use…Continue
I posted a blog on a Ball turret Gimbal design and build It appeared in DIYDrones with only 2 of the nine photos, and the text all garbled in between!! The preview before posting it was fine .Was…Continue
Good Day all,I have been spending a lot of time analyzing many different aerofoil profiles to optimize said profiles for a very specific flight regime. If there are any experts with good knowledge on…Continue
Hi Chris, maybe Bill (P) and other sensor boffins..Is there any temperature compensation and sensor orthogonality offset ( measured on a rate table maybe) done on the APM series autopilots? Has any…Continue
Pictured above is a twin tail boom Pusher Composite UAV made by Paramount Advanced Technologies. It was fitted with our autopilot and flight control software and we spent a few weeks flight tuning the system and implementing full auto takeoff and auto landing modes.
About 4m wingspan, pusher…Continue
Seeing Andrew Tridgell's post on the SF02 LRF used for landings on APM, I thought I would post some flight logs of our landings using the same rangefinder.…Continue
This is a reasonably compact, linearly polarised and well behaved antenna, with a gain , when well made, of around 1dBD ( 1dB more than a dipole). It is smaller than the Big wheel and the Skew Planar wheel, and I have used it very successfully on 868MHz on our SurVoyeur UAV.
It is derived from a 1/2wave ring, located some distance above a large conducting ground plane. The ring is at a point on its circumference shorted to…Continue
Hugues and a few other folk have been looking at using dipoles on 433MHz, I presume this to be the telemetry or RCS radio frequencies used by them.
I have been playing with some concepts here to try come up with a repeatable implementation with reasonable performance.…Continue