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by Vertigo72
Mon Oct 02, 2017 7:06 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Parallel interfacing with NewHaven 2.4" Display?
Replies: 2
Views: 1242

Re: Parallel interfacing with NewHaven 2.4" Display?

Did you ever manage this? Im also desperate to control a NH sunlight readable TFT from a Pi or arduino.
by Vertigo72
Tue Oct 06, 2015 2:54 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

I used the trial version of pix4dmapper for that. It copes better with the less than perfect images than visualfsm or photoscan, but its quite unaffordable for individuals. At least it doesnt make much sense to try and get by using a $25 camera then having to use software that costs €6500 ;) The tri...
by Vertigo72
Tue Oct 06, 2015 10:22 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

I still havent quite resolved the jello problem, despite trying without gimbal and using some foam and velcro to isolate any vibrations there might be. I think its the airflow. Anyway, this shouldnt be a problem in my next build, and meanwhile, I did get some results despite the jello. Here is a 3D ...
by Vertigo72
Mon Sep 28, 2015 2:42 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

And just did another flight test, with the gimbal stabilization turned off, so the servo's werent moving:

Image

There is still a hint of some jello I have to admit, probably from the wind and the frequency may match what we saw earlier.
by Vertigo72
Mon Sep 28, 2015 1:20 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

okay, so it takes ~60ms to grab a frame. My servo's have a refresh rate of 50Hz, that is 20ms between movements. Its surprising then that we count so many jello waves when theoretically, the servo could only move 3x per frame. I replaced the bad servo and stiffened up the bracket with some carbon an...
by Vertigo72
Mon Sep 28, 2015 9:58 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

Im not entirely sure, but even on the ground, with no motor running, there is very obvious jello in the video if the servo's are on. Here is a clip while the motor isnt even running: https://www.youtube.com/watch?v=H5AmdxpTGK0&feature=youtu.be (youtube pixelator makes it hard to see at times, but yo...
by Vertigo72
Mon Sep 28, 2015 7:18 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

Im thinking off another way: disable the servo's right before the camera is triggered. I dont see an easy way to accomplish this in the pixhawk, but maybe I can use the RPI. If I 'cut' the PWM signal wire between the flight controller and servo's, the servo's will just maintain their position. Is th...
by Vertigo72
Sun Sep 27, 2015 3:24 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

ultimately, Ill need a brushless gimbal, they dont cost that much anymore, but on my current test plane I have neither the room nor lifting capacity (its already way over its intended weight and so full Im carrying the pi outside the fuse) so while next plane is being designed/built, I carry on test...
by Vertigo72
Sun Sep 27, 2015 1:19 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

Meh. Now my camera stays level, that actually works very well but this is the result on a windy day: http://i.imgur.com/tqtmU3G.jpg Pretty severe jello, look at the roof or the side walls of that whatever it is. Have to think if this could be due to the one not so good servo or if this is something ...
by Vertigo72
Sat Sep 26, 2015 9:30 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

You actually made me think it through a bit more. Since the resolution of these servo's isnt infinite and the servo's potentially do move faster than the plane could roll or pitch, there is a risk that if the frame is shot while the servo is moving beween two steps, angular velocity could be higher ...
by Vertigo72
Sat Sep 26, 2015 7:31 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

The gimbal is "always on". The servo's are fast, faster than the plane itself can roll or pitch and there isnt any real vibration in their controlled movement, although the entire assembly has enough slop that wind could potentially cause some vibration, not helped by my not so aerodynamic design ;)...
by Vertigo72
Fri Sep 25, 2015 8:09 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

I used to cut up (P)ATA ribbon cables, but there is no way I'll manage these CSI cables. Not even going to try :) I also saw some people use HDMI cables and breakout boards, but thats not feasible for me either. Its not too bad with one camera though, and once I move to more camera's on a bigger pla...
by Vertigo72
Fri Sep 25, 2015 9:14 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

It wasnt external interference, as nothing was running besides the Pi and the camera. The banding was one or two thick horizontal bands and it could perfectly well be what you described. Sorry I didnt save the pictures, but the weren't much to look at as I was testing with the IR sensitive version s...
by Vertigo72
Thu Sep 24, 2015 10:50 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

Time for a little feedback; First of all, I need to apologize for wasting much of your time, as it appears the core of my problems where actually related to the SDcard writing speed and the mavlink deamon running in the background to talk to the flight controller. I disabled the latter for testing, ...
by Vertigo72
Wed Sep 23, 2015 11:00 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

If you can ensure the input is disabled before the output, then you should be OK. Probably a dumb question, but what exactly do you mean here? This switcher board is really taking advantage of this reset if you switch whilst the camera is streaming. The restart will be with the exposure and gain se...
by Vertigo72
Wed Sep 23, 2015 7:16 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

Wow, thanks a lot for that elaborate response and particularly for the sample code (Im not much of a programmer, so thats a big help). Ill see at what resolution the mjpeg works; if it works at or very near the full 5MP, this could be a workable solution. Meanwhile, I have also received this multi c...
by Vertigo72
Tue Sep 22, 2015 5:09 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

And multiple CSI interfaces too, pretty please :)
by Vertigo72
Tue Sep 22, 2015 4:20 pm
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

Higher res wouldnt necessarily impact the price of the sensor much, if at all. Smartphones these days all have 10+MP sensors. Of course, the usefulness of those pixels is questionable if they become physically too small and the optics dont improve as well, and those things certainly would impact pri...
by Vertigo72
Tue Sep 22, 2015 8:51 am
Forum: Camera board
Topic: still capture rate (still FPS)
Replies: 82
Views: 22719

Re: still capture rate (still FPS)

raspistill shoots pictures in the "still mode" of the camera. In this mode, a *lot* of work goes into producing the image including mode switching to the highest resolution, an aggressive denoise algorithm, etc. You're unlikely to get beyond 1fps with this. Shooting video at 15fps (and actually a l...
by Vertigo72
Thu May 30, 2013 5:47 am
Forum: Automation, sensing and robotics
Topic: Quadcopter+Raspberry Pi = PiCopter
Replies: 119
Views: 159080

Re: Quadcopter+Raspberry Pi = PiCopter

Alcatel-Lucent used a 3G/4G LTE dongle to fly Parrot A. R. Drone 3280FT, there is no step-by step in this article, but gives clues on how they, Alcatel-Lucent did it: http://www.engadget.com/2012/10/04/alcatel-lucent-flies-parrot-ar-drone-2-over-3280-feet-on-lte/ I saw that earlier, but as I unders...
by Vertigo72
Wed May 29, 2013 5:53 pm
Forum: Automation, sensing and robotics
Topic: Quadcopter+Raspberry Pi = PiCopter
Replies: 119
Views: 159080

Re: Quadcopter+Raspberry Pi = PiCopter

, want to do something like that. But sadly the Kinect Sensor isn't working in the pi (as far as i know). FYI, Kinect is just one of many such products. In consumer space you also have for instance this: http://www.asus.com/Multimedia/Xtion_PRO_LIVE/#overview sold by newegg: http://www.newegg.com/P...
by Vertigo72
Wed May 29, 2013 7:08 am
Forum: Automation, sensing and robotics
Topic: Quadcopter+Raspberry Pi = PiCopter
Replies: 119
Views: 159080

Re: Quadcopter+Raspberry Pi = PiCopter

BTW, if anyone wants to get more ambitious than "just" controlling a a multicopter with a Pi, imagine the possibilities if you connect a time of flight camera (like http://www.pmdtec.com/products_services/reference_design.php), such as used on the xbox Kinect. The Pi would get a 3D map of its surrou...
by Vertigo72
Wed May 29, 2013 6:55 am
Forum: Automation, sensing and robotics
Topic: Quadcopter+Raspberry Pi = PiCopter
Replies: 119
Views: 159080

Re: Quadcopter+Raspberry Pi = PiCopter

Awesome project(s). Being a fresh QC addict with a spare raspberry Im following this closely. A few question so far; someone above mentioned 3G connectivity extending the potential range to 1Km. How is that? Can you do point to point connections using 3G dongles? If not, then the only other option I...

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