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by gregd72002_
Sun Jan 31, 2016 6:32 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: ublox gps over i2c
Replies: 9
Views: 5348

Re: ublox gps over i2c

Hi, no, I haven't solved it yet. Last time I tried was (I believe) with kernel version 3.19. So might want to do some research with newer kernel...
by gregd72002_
Wed Jul 15, 2015 8:56 am
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

A new version is now ready with fixed occasional yaw glitches, improved failsafe and improved debugging. Also my first FPV below - not HD yet due to my SD card being too slow but I will upload new ones once I get more footage. https://www.youtube.com/watch?v=b05saAwUmVU https://www.youtube.com/watch...
by gregd72002_
Fri Jun 05, 2015 1:48 pm
Forum: General discussion
Topic: SPI DMA example
Replies: 5
Views: 3398

Re: SPI DMA example

I would be interested in this as well. Have you found an example?
by gregd72002_
Thu Jun 04, 2015 6:30 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: spi transfer returned EINVAL
Replies: 9
Views: 5982

Re: spi transfer returned EINVAL

I encountered the same problem. 'pad' was not set and it was failing. Thanks!
by gregd72002_
Tue May 05, 2015 9:51 am
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

Hi, With any experimental approach you have to be prepared to rebuild your quad. But before it can crash it has to be flying first :) Well, this is not quite true - I had to rebuild my macbook well before I had my first flight - I coincidentally started off one of the motors next to my macbook and i...
by gregd72002_
Wed Apr 08, 2015 3:38 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: ublox gps over i2c
Replies: 9
Views: 5348

ublox gps over i2c

Hi, I've got a ublox-7m gps module that I am trying to interface over i2c. Has anyone tried this before? The ublox is pretty much the same as ublox-6m when it comes to i2c specification. It actually uses DDC protocol and requires repeated start feature. So I got this to work based on the following: ...
by gregd72002_
Mon Apr 06, 2015 11:59 am
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

Hi, I don't know of any other controllers that you could easily interface with RPi other than AvrMiniCopter.
However MultiWii might be an option as it features UART communication. But you will need to interface it yourself with RPi.
by gregd72002_
Wed Apr 01, 2015 9:00 am
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

Hi, there are projects up there that use RPi only to fly quadcopters. In fact my initial approach was to do everything on RPi and it did work as I described in the Odroid magazine: http://magazine.odroid.com/assets/201503/pdf/ODROID-Magazine-201503.pdf Here is the repository but it is not maintained...
by gregd72002_
Thu Feb 05, 2015 3:19 pm
Forum: Camera board
Topic: Streaming and Taking picture
Replies: 9
Views: 11488

Re: Streaming and Taking picture

Hi, has there been any progress on this, is it now possible?
Thanks,
by gregd72002_
Fri Jan 23, 2015 10:05 am
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

Another update in here. Project now is moving smoothly with plenty of additions including Android controller and 2D/3D FPV flying. Ready images are available to download and flash your RPi. For details on the functionality and up-to-date conversation please see: http://www.rcgroups.com/forums/showth...
by gregd72002_
Fri Jan 23, 2015 9:55 am
Forum: General discussion
Topic: Raspberry Pi + WebRTC
Replies: 9
Views: 7065

Re: Raspberry Pi + WebRTC

Hi, I can only say I had some success with janus-gateway. It did stream well but some more tweaking was needed for which I did not have time. Look for the project issue list titled 'h264'.
by gregd72002_
Sun Dec 21, 2014 11:55 am
Forum: Camera board
Topic: RPiCameraStreamer - RPi to Android/IOS live streamer
Replies: 1
Views: 820

Re: RPiCameraStreamer - RPi to Android/IOS live streamer

I have added iOS example too. Sources are available in the repository.
by gregd72002_
Wed Dec 17, 2014 11:05 am
Forum: Camera board
Topic: RPiCameraStreamer - RPi to Android/IOS live streamer
Replies: 1
Views: 820

RPiCameraStreamer - RPi to Android/IOS live streamer

Hi, As part of my project I created an app to live stream RPi camera to Android and iOS IOS support will be added once I get some time or someone else compiles it :) . iOS example is now included too. It was designed to be as lag less as possible and to work over UDP (so no congestion issues). It us...
by gregd72002_
Thu Dec 11, 2014 12:45 pm
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

patrikg wrote:Great video and great raspberry pi creation, but to make the video last on youtube think of this:

Youtube is very aggressive to remove videos with copyrighted music.
Therefore they tag it at the first instance... :)
by gregd72002_
Fri Nov 28, 2014 10:09 am
Forum: Camera board
Topic: RaspiMJPEG
Replies: 100
Views: 81746

Re: RaspiMJPEG

I was struggling to get raspimjpeg to work so created a clean version and fixed a bug or two.

You can easily cross-compile it or just compile it straight on RPi.

https://github.com/rpicopter/raspimjpeg
by gregd72002_
Wed Nov 26, 2014 11:17 am
Forum: General discussion
Topic: Raspberry Pi + WebRTC
Replies: 9
Views: 7065

Re: Raspberry Pi + WebRTC

Before I start to reinvent the wheel, anyone got some progress on this?

Looking to get camera live streaming from RPi to a PC using WebRTC for my project

https://github.com/rpicopter/AvrMiniCopter
https://www.youtube.com/watch?v=lyR4wM2C4sA
by gregd72002_
Sat Nov 22, 2014 11:07 pm
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

Are you using barometer (or GPS) to correct your vertical velocity? I will try to do this pre-programmed flight plan and record it, though it might take some time again... My altitude hold is based on the fusion of accelerometer and barometer and seems to be pretty accurate +/-10inch. Meantime I've ...
by gregd72002_
Fri Nov 21, 2014 1:37 pm
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

Thanks hove!

How are you doing on your project? Would you be interested in helping out to test AvrMiniCopter?
by gregd72002_
Thu Nov 20, 2014 11:22 pm
Forum: Automation, sensing and robotics
Topic: rpicopter - the right approach
Replies: 20
Views: 8881

Re: rpicopter - the right approach

And here it is! Took me much longer than expected but it was well worthy. It is called AvrMiniCopter and it is a module that one can attach to RPi to make it fly. The current version supports PS3 controller but you could use keyboard instead with some help of scripting. https://www.youtube.com/watch...
by gregd72002_
Mon Nov 10, 2014 5:03 pm
Forum: General discussion
Topic: Micro factor RPi?
Replies: 63
Views: 5936

Re: Micro factor RPi?

Well, Olimex, Edison, etc are not replacement for RPi, they do not have graphics capabilities at all! And graphic capability does not equal hdmi. You can use opengl and other functionality without the need for video out. It is hard to find a good alternative to RPi that is powerful enough. Micro si...
by gregd72002_
Mon Nov 10, 2014 4:44 pm
Forum: General discussion
Topic: Micro factor RPi?
Replies: 63
Views: 5936

Re: Micro factor RPi?

Well, Olimex, Edison, etc are not replacement for RPi, they do not have graphics capabilities at all! And graphic capability does not equal hdmi. You can use opengl and other functionality without the need for video out. It is hard to find a good alternative to RPi that is powerful enough. Micro si...
by gregd72002_
Mon Nov 10, 2014 4:26 pm
Forum: General discussion
Topic: Micro factor RPi?
Replies: 63
Views: 5936

Re: Micro factor RPi?

There are many application accesing the internet, either by WLAN or Ethernet. <snip> Therefore a small embedded linux would be my first choice for such applications - even if its just switching the light. But if the embedded Linux was too bulky (which the raspi is) - what would be your second choic...
by gregd72002_
Mon Nov 10, 2014 3:34 pm
Forum: General discussion
Topic: Micro factor RPi?
Replies: 63
Views: 5936

Re: Micro factor RPi?

I aggree. None of the current RPI models fits for small embedded applications. I honestly don't agree - what application do you have in mind? Remember, the Raspberry Pi is not a microcontroller. Once you have an adequate battery, it will be a much bigger package. I really think compactness fans sho...
by gregd72002_
Mon Nov 10, 2014 2:36 pm
Forum: General discussion
Topic: Micro factor RPi?
Replies: 63
Views: 5936

Re: Micro factor RPi?

Guys, this wasnt supposed to be a discussion about odroid-w. I deliberately avoid its name despite having 3 of them at my home. For clarity I also have 3 RPi boards. In this thread I was really trying to figure out what people think. I find that RPi's (A & B) are very end-user oriented, plug-and-pla...
by gregd72002_
Mon Nov 10, 2014 12:24 pm
Forum: General discussion
Topic: Micro factor RPi?
Replies: 63
Views: 5936

Re: Micro factor RPi?

I think you're asking for a lot. The A+ at 65x56x12mm and 23g is an awful lot of computing for £23.35 (inc VAT & shipping). Maybe I am :) I presume one can desolder some of the connectors and put pins instead anyway. The clone I was referring to is 60 x 36 x 7mm so not that far off the A+. I guess ...

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