Search found 43 matches
- Mon Jun 24, 2019 8:18 pm
- Forum: General discussion
- Topic: Raspberry Pi 4 Thread - general discussion
- Replies: 947
- Views: 185851
Re: Raspberry Pi 4 Thread - general discussion
Has the maximum number of USB endpoints been increased? It would be good to be able to hook up more than half a dozen USB peripherals. It's an xHCI controller - number of endpoints is no longer the limit, number of device slots is. HCSPARAMS1 = 0x05000420 -> 0x20 for number of slot IDs -> 32 simult...
- Mon Jun 24, 2019 8:10 pm
- Forum: General discussion
- Topic: Raspberry Pi 4 Thread - general discussion
- Replies: 947
- Views: 185851
Re: Raspberry Pi 4 Thread - general discussion
Did anybody complain about the M2.5 mounting holes (same as on previous models) yet? I can do that if you want :D M2.5 standoffs are horribly expensive compared to M3 or M2, what were you thinking?? (Ok, I spare you the huge font...) But 3mm drill bits are cheap, takes 2 minutes to drill the holes ...
- Mon Jun 24, 2019 7:30 pm
- Forum: General discussion
- Topic: Raspberry Pi 4 Thread - general discussion
- Replies: 947
- Views: 185851
Re: Raspberry Pi 4 Thread - general discussion
Yeah, that would be nice. With the old Raspberrys, maximum useable number of Atheros 9271 wifi sticks is three and in general usb was subject to timing issues.
- Mon Jun 24, 2019 12:56 pm
- Forum: General discussion
- Topic: Raspberry Pi 4 Thread - general discussion
- Replies: 947
- Views: 185851
Re: Raspberry Pi 4 Thread - general discussion
With the new Videocore 6 and higher GPU freq and faster RAM, is my assumption correct, that h.264 encoding and decoding will be faster, i.e. the glass-to-glass latency will be slightly lower?
- Mon Jul 16, 2018 10:35 pm
- Forum: Camera board
- Topic: Cheap RC airplane with "outboard" Pi Zero and camera
- Replies: 49
- Views: 33906
Re: Cheap RC airplane with "outboard" Pi Zero and camera
You may want to have a look at this before you start re-inventing everything ;) https://github.com/bortek/EZ-WifiBroadcast/wiki https://www.rcgroups.com/forums/showthread.php?2664393-EZ-WifiBroadcast-cheap-digital-HD-transmission-made-easy%21 https://www.youtube.com/watch?v=bfz9F9lOMm8 https://vimeo...
- Thu Apr 19, 2018 6:20 am
- Forum: Troubleshooting
- Topic: Raspberry Pi 3 B+ lockups
- Replies: 464
- Views: 91647
Re: Raspberry Pi 3 B+ lockups
Mine also is affected. Bought on 7th of April at Conrad Electronic in Germany.
- Sat Feb 24, 2018 9:48 am
- Forum: OpenVG
- Topic: How to increase OpenVG time performances
- Replies: 17
- Views: 21065
Re: How to increase OpenVG time performances
Hey Paeryin, I've tried your openvg fork now. CPU load reported by top for my process went down from about 16% to 11%, rendering time (time measured from before Start() to after End() call) from about 55ms to 25ms. More than 100% speed increase plus lower CPU load just by swapping the libraries, tha...
- Wed Jan 10, 2018 4:24 pm
- Forum: General discussion
- Topic: Problem with Wireless Network Adapter Ralink MT7601U
- Replies: 17
- Views: 20749
Re: Problem with Wireless Network Adapter Ralink MT7601U
has anything changed inside the kernel regarding MT7601 dongles from 4.4 to 4.9? Users of my EZ-Wifibroadcast distribution report that their MT7601 adapters stopped working after I upgraded the image from kernel 4.4 to kernel 4.9.35. The card is detected by the kernel: dmesg: [ 1.681561] usb 1-1.5: ...
- Thu Apr 20, 2017 4:54 pm
- Forum: Raspberry Pi OS
- Topic: Raspbian release history?
- Replies: 2
- Views: 8450
Re: Raspbian release history?
Exactly what I couldn't find somehow. Thanks a lot.
- Thu Apr 20, 2017 4:29 pm
- Forum: Raspberry Pi OS
- Topic: Raspbian release history?
- Replies: 2
- Views: 8450
Raspbian release history?
Is there a Raspbian release history somewhere? Possibly with changelog and the older images for download?
I would like to download the image before the latest (2017-04-10), don't know what it's version name is and can't find anything.
I would like to download the image before the latest (2017-04-10), don't know what it's version name is and can't find anything.
- Tue Apr 11, 2017 3:04 pm
- Forum: Camera board
- Topic: Artifacts, "blocky" video stream
- Replies: 6
- Views: 2275
Re: Artifacts, "blocky" video stream
There is the alternate acronym for MPEG - Motion Pictures Except Grass. LOL. Yeah, I know similar effects from watching DVB-T (mpeg-2 I think) around new years eve, when it shows fireworks, it gets really blocky, seems to be something the codec cannot deal with very good. I just wouldn't have thoug...
- Tue Apr 11, 2017 2:11 pm
- Forum: Camera board
- Topic: Artifacts, "blocky" video stream
- Replies: 6
- Views: 2275
Artifacts, "blocky" video stream
I found something where I'm not sure if this is correct behavior of the camera (or the h264 encoder). When walking through the woods, sometimes parts of the images are heavily "blocky". At first, I attributed this to the complex light conditions in a forest and the fact that in wintertime ...
- Tue Apr 04, 2017 5:56 pm
- Forum: General discussion
- Topic: WiFi dongle with monitor mode?
- Replies: 12
- Views: 32760
Re: WiFi dongle with monitor mode?
The other thing I have noticed is that if I connect the wifi dongle whilst the RPI is on, it hangs. If I reboot the RPI comes up, but the eth0 is completely unresponsive as is my wireless keyboard plugged into a spare USB port Yeah, USB on the Pi has always been and still is a mess. Simple things l...
- Wed Mar 15, 2017 5:45 pm
- Forum: Camera board
- Topic: New 8MP Camera - Q&A thread
- Replies: 451
- Views: 236629
Re: New 8MP Camera - Q&A thread
While that sounds logical from a developers perspective, it's quite weird from the user's perspective ;) Is there no way of finding out which resolution, fps and mode the cam is actually using? With those kinds of differences and "corner cases", I always feel like "hmm, is it _really_...
- Wed Mar 15, 2017 3:36 pm
- Forum: Camera board
- Topic: New 8MP Camera - Q&A thread
- Replies: 451
- Views: 236629
Re: New 8MP Camera - Q&A thread
Whichever mode it reckons fulfils the criteria specified and should give the best image quality. On the V2 camera that is predominantly frame rate dependent (which side of 40fps). Yes, this was also my understanding and why I asked why there is a difference. You don't say how the FOV is changing be...
- Sat Mar 11, 2017 5:28 pm
- Forum: Camera board
- Topic: New 8MP Camera - Q&A thread
- Replies: 451
- Views: 236629
Re: New 8MP Camera - Q&A thread
Why do I get a different FOV when running
compared to:
Cam is a Pi V2 cam. Which mode is the cam using when not explicitly setting the mode?
Code: Select all
raspivid -w 1280 -h 720 -fps 48 -t 0 -md 6
Code: Select all
raspivid -w 1280 -h 720 -fps 48 -t 0
- Fri Jan 27, 2017 12:22 pm
- Forum: Device Tree
- Topic: Overlay to remap Pi 3 UART
- Replies: 126
- Views: 128693
Re: Overlay to remap Pi 3 UART
Thanks for the info guys. Edited my initial post regarding hardware/software uart to not confuse others. Is it maybe possible (with everything being so small and the PCB having many layers I doubt it, but ...) to access these pins somewhere else on the PCB? Just did some more searching on the topic,...
- Fri Jan 27, 2017 11:44 am
- Forum: Device Tree
- Topic: Overlay to remap Pi 3 UART
- Replies: 126
- Views: 128693
Re: Overlay to remap Pi 3 UART
Just to clarify for me, as I understand, on the Pi3 there are the following options: - disable BT and have UART0 (ttyAMA0) on the TXD/RXD pins on the GPIO header for external connections - keep BT enabled and have UART1 (ttyS0) on the TXD/RXD GPIO pins for external connections - keep BT enabled and ...
- Tue Nov 22, 2016 5:25 pm
- Forum: Troubleshooting
- Topic: What's this strange kernel messages?
- Replies: 0
- Views: 411
What's this strange kernel messages?
Never seen something like this in dmesg log, what does it mean?
[43203.321224] vchiq: 0: prs DATA@b6c988d0 (18->4) - invalid/closed service 4
[51833.521239] vchiq: 0: prs DATA@b6c98808 (18->4) - invalid/closed service 4
[43203.321224] vchiq: 0: prs DATA@b6c988d0 (18->4) - invalid/closed service 4
[51833.521239] vchiq: 0: prs DATA@b6c98808 (18->4) - invalid/closed service 4
- Tue Nov 22, 2016 1:36 pm
- Forum: OpenVG
- Topic: How to increase OpenVG time performances
- Replies: 17
- Views: 21065
Re: How to increase OpenVG time performances
Regarding the overclocking not increasing openVG performance:
Setting gpu_freq=400 and force_turbo=1 in config.txt sped up things quite a lot for me. Force turbo is important.
Setting gpu_freq=400 and force_turbo=1 in config.txt sped up things quite a lot for me. Force turbo is important.
- Mon Nov 07, 2016 11:11 pm
- Forum: Camera board
- Topic: Stereoscopic camera capture (for COMPUTE MODULE) - now implemented (2014).
- Replies: 199
- Views: 87267
Re: Stereoscopic camera capture - now implemented.
Thanks for the info. Sounds not too good though ... When I spoke of the compute module, I meant complete with I/O board, designing and building a smaller solution would be too much effort. Reason for two Pi Zeros being better than one compute module is simple: It's twice the horsepower ;) There are ...
- Mon Nov 07, 2016 11:56 am
- Forum: Camera board
- Topic: Stereoscopic camera capture (for COMPUTE MODULE) - now implemented (2014).
- Replies: 199
- Views: 87267
Re: Stereoscopic camera capture - now implemented.
I have recently played around with 3D live video on the Pi (by running two Pi's with two cams as transmitters and modified hello_video.bin instances on the receivers, one rendering the left image, the other rendering the right image as a quick hack), but got really sick after 2 minutes. This doesn't...
- Sat Nov 05, 2016 3:19 pm
- Forum: OpenVG
- Topic: Example program to draw random shapes using the C compiler
- Replies: 72
- Views: 75507
Re: Example program to draw random shapes using the C compil
Thanks for the good explanation, will give it a try. The thing with the rotation around 0,0 probably explains why stuff didn't show up anymore with my failed attempts so far, I rotated it off the screen 

- Fri Nov 04, 2016 3:14 pm
- Forum: Troubleshooting
- Topic: 6 inch 1080x1920 HDMI display - no picture
- Replies: 5
- Views: 3317
Re: 6 inch 1080x1920 HDMI display - no picture
Just tried again, looks like something has been fixed in the firmware or so. Maybe it's still of interest for someone, the following settings in config.txt are needed: max_framebuffer_width=1080 max_framebuffer_height=1920 display_rotate=3 hdmi_ignore_edid=0xa5000080 hdmi_timings=1080 0 118 4 118 19...
- Fri Nov 04, 2016 2:33 pm
- Forum: OpenVG
- Topic: Example program to draw random shapes using the C compiler
- Replies: 72
- Views: 75507
Re: Example program to draw random shapes using the C compil
I'm using this code based on the OpenVG library to display an on screen display (text and graphical elements) on the Raspberry: https://github.com/SamuelBrucksch/wifibroadcast_osd Now I would like to rotate the whole OSD (i.e. everything) 270 degrees since I'm using a portrait mode 1080x1920 screen ...