http://www.rcgroups.com/forums/showthread.php?s=e7a5a4b0efd675c4542a82ff8d99df24&t=1478852
Very cool…I’d love one myself…just one problem, I suck at
flying RC planes!
AlexOn 26 September 2011 15:58, Will Jessop will@willj.net wrote:
http://www.rcgroups.com/forums/showthread.php?s=e7a5a4b0efd675c4542a82ff8d99df24&t=1478852
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If I was to do something similar I’d want to make it more automatic so
I could tell it to do stuff like:
- fly to point x
- circle clockwise with radius of y metres
- land at point z
Something like a helicopter or other hovering platform would be more
useful for that though. Something like this would be just great:
Will.On Mon, Sep 26, 2011 at 4:14 PM, Alexander Lang alexanderlang1980@googlemail.com wrote:
Very cool…I’d love one myself…just one problem, I suck at
flying RC planes!
Will,
flying a drone to point X would require very extensive knowledge and
mapping of the route. The ‘drone’ would need a nav computer from an
Aircraft! It would then also need information about all obstacles in
the way (Buildings, Hills, Trees, fences etc)
Fly clockwise with a radius of metres - SRTM Data is only accurate to
70m and GPS dataloggers are only good to 15 metres so you would need
a local mapping transceiver again with all of the ‘local’ obstacles
etc.
Land at point X - see above.
I’m not saying this can’t be done its just very difficult. Someone
would have to fly the drone manually and ‘teach’ it the obstacles,
routes, waypoints and landing zones. It could then repeat it
perfectly…this doesn’t allow for weather (winds etc)
Good luck!!
AlexOn 26 September 2011 16:35, Will Jessop will@willj.net wrote:
If I was to do something similar I’d want to make it more automatic so
I could tell it to do stuff like:
- fly to point x
- circle clockwise with radius of y metres
- land at point z
Something like a helicopter or other hovering platform would be more
useful for that though. Something like this would be just great:http://www.youtube.com/watch?v=E7X0_6o9J10
Will.
On Mon, Sep 26, 2011 at 4:14 PM, Alexander Lang alexanderlang1980@googlemail.com wrote:
Very cool…I’d love one myself…just one problem, I suck at
flying RC planes!–
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flying a drone to point X would require very extensive knowledge and
mapping of the route. The ‘drone’ would need a nav computer from an
Aircraft! It would then also need information about all obstacles in
the way (Buildings, Hills, Trees, fences etc)
Oh, yeah, you’d be telling it what to do with a knowledge of the
terrain. If you knew there was a tree between a and z you’d route the
thing accordingly. You’d just be taking the busy work out of flying.
Fly clockwise with a radius of metres - SRTM Data is only accurate to>70m and GPS dataloggers are only good to 15 metres so you would need
15m is fine for hovering somewhere when you know the terrain. You’d
not tell the aircraft to go and hover where there were nearby
obstacles. You can start to rely on other sensors too when you get
close to the ground for landing etc.
I’m not saying this can’t be done its just very difficult. Someone
would have to fly the drone manually and ‘teach’ it the obstacles,
routes, waypoints and landing zones. It could then repeat it
perfectly…this doesn’t allow for weather (winds etc)
What I’d do would be to create something not autonomous, but that took
the work out of the flying bit freeing you up to do stuff like
scrutinise any images that come back.
Just fantasising anyway, no plans to build anything like this right
now :0
Will
Fly clockwise with a radius of metres - SRTM Data is only accurate to
70m and GPS dataloggers are only good to 15 metres so you would need
a local mapping transceiver again with all of the ‘local’ obstacles
etc.Modern consumer GPS is good down to the meter assuming you’re outdoors and
not surrounded by buildings, certainly enough for a ‘go to about here, hover
and take a picture’ mode. For most obstacles, you’ll be too high to have
to worry.
I’m not saying this can’t be done its just very difficult. Someone
would have to fly the drone manually and ‘teach’ it the obstacles,
routes, waypoints and landing zones. It could then repeat it
perfectly…this doesn’t allow for weather (winds etc)
This is what your sensor package is for, with 9dof IMU (3axis Accelerometer,
3axis Gyro, 3 Axis Accelerometer), an air pressure sensor (to augment the
GPSssses Z measurement, which is less accurate then X and Y), some kind of
ground sensor (0-3m ultrasonic unit is enough, its just used for landings)
you can easily detect wind etc. Obviously this wont deal with high winds,
but flying in those situations isnt a good idea anyway!
I sit corrected…I haven’t looked into this in a while.
Thanks Bob!On 27 September 2011 09:23, Bob Clough parag0n@ivixor.net wrote:
Fly clockwise with a radius of metres - SRTM Data is only accurate to
70m and GPS dataloggers are only good to 15 metres so you would need
a local mapping transceiver again with all of the ‘local’ obstacles
etc.Modern consumer GPS is good down to the meter assuming you’re outdoors and
not surrounded by buildings, certainly enough for a ‘go to about here, hover
and take a picture’ mode. For most obstacles, you’ll be too high to have
to worry.I’m not saying this can’t be done its just very difficult. Someone
would have to fly the drone manually and ‘teach’ it the obstacles,
routes, waypoints and landing zones. It could then repeat it
perfectly…this doesn’t allow for weather (winds etc)This is what your sensor package is for, with 9dof IMU (3axis Accelerometer,
3axis Gyro, 3 Axis Accelerometer), an air pressure sensor (to augment the
GPSssses Z measurement, which is less accurate then X and Y), some kind of
ground sensor (0-3m ultrasonic unit is enough, its just used for landings)
you can easily detect wind etc. Obviously this wont deal with high winds,
but flying in those situations isnt a good idea anyway!–
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This may be of interest, the Quadshot
http://hak5.org/episodes/hak5-1002
http://hak5.org/episodes/hak5-1005On 27 September 2011 09:45, Alexander Lang <alexanderlang1980@googlemail.com wrote:
I sit corrected…I haven’t looked into this in a while.
Thanks Bob!
On 27 September 2011 09:23, Bob Clough parag0n@ivixor.net wrote:
Fly clockwise with a radius of metres - SRTM Data is only accurate to
70m and GPS dataloggers are only good to 15 metres so you would need
a local mapping transceiver again with all of the ‘local’ obstacles
etc.Modern consumer GPS is good down to the meter assuming you’re outdoors
and
not surrounded by buildings, certainly enough for a ‘go to about here,
hover
and take a picture’ mode. For most obstacles, you’ll be too high to
have
to worry.I’m not saying this can’t be done its just very difficult. Someone
would have to fly the drone manually and ‘teach’ it the obstacles,
routes, waypoints and landing zones. It could then repeat it
perfectly…this doesn’t allow for weather (winds etc)This is what your sensor package is for, with 9dof IMU (3axis
Accelerometer,
3axis Gyro, 3 Axis Accelerometer), an air pressure sensor (to augment the
GPSssses Z measurement, which is less accurate then X and Y), some kind
of
ground sensor (0-3m ultrasonic unit is enough, its just used for
landings)
you can easily detect wind etc. Obviously this wont deal with high
winds,
but flying in those situations isnt a good idea anyway!–
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