Gender
Male
About
Location
Stony Brook, NY
About Me:
Physicist by training, working in software now.
Please tell us a bit about your UAV interest
scratch-built quadcopters aerial platform development plane autopilots
Hometown:
Stony Brook, NY
Activity Feed
"Yet another trick is to take advantage of the fact that in most receivers (at least all the ones I have tried) the pulses on the individual channels are staggered in time (just like the original PPM signal). One can therefore get away with simple…"
"Hi Sept,
My project described here is completely unrelated to ArduPilot, but I will try answer your question.
An ideal lens with focal length f will produce an image of an object at distance o from the lens at distance i on the opposite side of the…"
My project described here is completely unrelated to ArduPilot, but I will try answer your question.
An ideal lens with focal length f will produce an image of an object at distance o from the lens at distance i on the opposite side of the…"
"@Collin: Sorry for the late reply. Sounds like an interesting project.
Regarding your hardware choices: I don't really have any experience with that particular control board; I built my own boards from scratch based on an Atmega328. I am sure the…"
Regarding your hardware choices: I don't really have any experience with that particular control board; I built my own boards from scratch based on an Atmega328. I am sure the…"
"Hi Saad,
It flies all right, I think. This was the first flying wing I have ever flown, so I don't really have much to compare it to. I have since bought a HobbyPartz PopWing, and I think my wing actually feels more like it is flying, while the…"
It flies all right, I think. This was the first flying wing I have ever flown, so I don't really have much to compare it to. I have since bought a HobbyPartz PopWing, and I think my wing actually feels more like it is flying, while the…"
"Hi Bret,
I used MH45 for my flying wing, but I cannot remember how I arrived at this choice (I did it about 3 years ago). I suspect I saw someone else using it and followed their lead...
I am using 3 degrees washout - I arrived at this number after…"
I used MH45 for my flying wing, but I cannot remember how I arrived at this choice (I did it about 3 years ago). I suspect I saw someone else using it and followed their lead...
I am using 3 degrees washout - I arrived at this number after…"
"Hi Saad,
Regarding your question about my fiber-coated flying wing:
I build the wing a little over three years ago, so I am a little fuzzy on the details. The reason for fiber coating is that the wings were hot-wire cut out of pink building…"
Regarding your question about my fiber-coated flying wing:
I build the wing a little over three years ago, so I am a little fuzzy on the details. The reason for fiber coating is that the wings were hot-wire cut out of pink building…"
"Awesome project!
I am currently working on something similar, except with a BeagleBone instead of an RPi, plus an Attiny85 for the glue logic between the Linux board and the ESCs. Have only done bunny-hops so far, PIDs are not tuned right yet. My…"
I am currently working on something similar, except with a BeagleBone instead of an RPi, plus an Attiny85 for the glue logic between the Linux board and the ESCs. Have only done bunny-hops so far, PIDs are not tuned right yet. My…"
"Very interesting! Do you interpolate between pixels, or does it detect at most 32 depth levels (i.e. number of horizontal pixels)?Marko"
"@Wagner: Sure, which source are we talking about? The actual quadcopter code or the code that runs on the Attiny13 which controls the mouse sensor? Keep in mind that I am running on hardware that has no relation or resemblance with Arducopter... …"
"Hi Phillip,
Good luck with your project, I always like to see other scratch-builders! I am sure if you stick with it you can get to something that flies nicely.
Regarding inertial navigation/dead reckoning:
I think your goals are ambitious, but will…"
Good luck with your project, I always like to see other scratch-builders! I am sure if you stick with it you can get to something that flies nicely.
Regarding inertial navigation/dead reckoning:
I think your goals are ambitious, but will…"
"@Saad: Andrew's suggestion of twisting the foam stock in the opposite direction before cutting the wing is probably the best solution for producing twist.
I used a slightly different technique: my tip template it twisted against the root template,…"
I used a slightly different technique: my tip template it twisted against the root template,…"
"Hi Trent,
As always, I enjoyed your post. I really like your systematic approach at figuring things out...
In line with some of the comments above: Clark-Y is not a good airfoil choice for a flying wing since it has a pronounced pitching moment. …"
As always, I enjoyed your post. I really like your systematic approach at figuring things out...
In line with some of the comments above: Clark-Y is not a good airfoil choice for a flying wing since it has a pronounced pitching moment. …"
"Hi Bill,
Thanks, aerodynamic effects sounds plausible.
Real time dynamic model in flight sounds exciting. I am currently retro-fitting one of my quads (I have three, all home-built with no direct relation to Arducopter) with a BeagleBone as a…"
Thanks, aerodynamic effects sounds plausible.
Real time dynamic model in flight sounds exciting. I am currently retro-fitting one of my quads (I have three, all home-built with no direct relation to Arducopter) with a BeagleBone as a…"
"Hi Bill,
Great analysis! I am looking forward to seeing where you might go with this...
Do you have any intuitive insight as to why the impulse response becomes negative after about 0.65s? Perhaps I misunderstood, but I thought your independent…"
Great analysis! I am looking forward to seeing where you might go with this...
Do you have any intuitive insight as to why the impulse response becomes negative after about 0.65s? Perhaps I misunderstood, but I thought your independent…"
"Stunning frame design! Are you planning on releasing the plans?"
"@Joseph: Don't know about MAVlink for arducopter, but I would assume it is implemented as I think the codebase is shared with arduplane?
I don't mind sharing the sources, I just don't promise fitness for any purpose ;-) Just shoot me your email via…"
I don't mind sharing the sources, I just don't promise fitness for any purpose ;-) Just shoot me your email via…"
