Go to advanced search

by jamesh
Wed Jun 20, 2018 8:57 pm
Forum: Graphics programming
Topic: FBG : Framebuffer graphics library with multi-core support
Replies: 5
Views: 173

Re: FBG : Framebuffer graphics library with multi-core support

Sure, it can be used to make anything related to graphics. However this library is very bare-metal (not specialized for video games) and graphics are not accelerated by the PI GPU, as such there might be better alternative for video games on the PI. :) Implement some of the primitives using NEON an...
by jamesh
Wed Jun 20, 2018 8:55 pm
Forum: Advanced users
Topic: OpenGL drivers & CSI Touch Screen
Replies: 1
Views: 52

Re: OpenGL drivers & CSI Touch Screen

Hmm. Not sure. I thought that the DSI display was supported in the latest OpenGL driver.
by jamesh
Wed Jun 20, 2018 8:54 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 4
Views: 142

Re: Multiple Frame buffer beta testers wanted

procount wrote:
Wed Jun 20, 2018 4:13 pm
Cool!
I'd like to put this into PINN. Would it be possible to build it into PINN/NOOBS's buildroot environment?
I'd be inclined to wait until testing shows no issues, then we will release it as standard anyway.
by jamesh
Wed Jun 20, 2018 8:53 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 4
Views: 142

Re: Multiple Frame buffer beta testers wanted

Will this work with DPI too or is it only possible to use HDMI and DSI? If yes, how to configure the timings in case custom timings are required for both, HDMI and DPI? Any display that is run from the VC4 side of things using dispmanx would work. Just set up the DPI display as you would before, an...
by jamesh
Wed Jun 20, 2018 8:50 pm
Forum: General discussion
Topic: Pi Is Too Complicated
Replies: 19
Views: 353

Re: Pi Is Too Complicated

Odd that people think the complexity is due to divergence from Debian. We try pretty hard to make as few changes as we can (because its a maintenance nightmare), so intrigued to know what these major usability changes/differences are. Networking was mentioned, but AFAIK, it's pretty much plain Debia...
by jamesh
Wed Jun 20, 2018 3:46 pm
Forum: Official Foundation Display
Topic: Official Touch Screen and Xorg
Replies: 57
Views: 34401

Re: Official Touch Screen and Xorg

OK, beta is ready

viewtopic.php?f=63&t=216399
by jamesh
Wed Jun 20, 2018 3:45 pm
Forum: Graphics programming
Topic: run the HDMI and TFT screen simultaneously
Replies: 23
Views: 4564

Re: run the HDMI and TFT screen simultaneously

See here for new multi FB support

viewtopic.php?f=63&t=216399
by jamesh
Wed Jun 20, 2018 3:41 pm
Forum: Troubleshooting
Topic: Repeated external USB drive corruptions
Replies: 7
Views: 158

Re: Repeated external USB drive corruptions

The Pi cuts power to USB too early for your drives, they are probably busy saving when the Pi reaches the end of shutdown and cuts power to the USB ports. Using the external automounter (autofs5) should solve this; systemd tries to stop the automounter early in the shutdown process, so the drives h...
by jamesh
Wed Jun 20, 2018 3:39 pm
Forum: Graphics, sound and multimedia
Topic: Best quality board to add 3.5mm mic input under £20
Replies: 2
Views: 63

Re: Best quality board to add 3.5mm mic input under £20

Check Ebay for 3.5mm audio to USB converters.
by jamesh
Wed Jun 20, 2018 3:35 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 4
Views: 142

Multiple Frame buffer beta testers wanted

Hello all, Finally got round to sorting out the multi FB support as a beta. This implements frame buffers for both HDMI/composite and LCD panels at the same time. So you get /dev/fb0 and /dev/fb1 if you have both HDMI and LCD attached. Here are the instructions to get the code and install and test i...
by jamesh
Wed Jun 20, 2018 3:30 pm
Forum: General discussion
Topic: use pi zero w in commercial production
Replies: 57
Views: 9617

Re: use pi zero w in commercial production

China is getting good at making copycats. I would not trust that is genuine. That, or you will not in the end get the price advertised. Some Chinese manufacturers copy legit designs right from the source. They make a genuine product then sell the source code to another factory, or manufacture the e...
by jamesh
Wed Jun 20, 2018 2:28 pm
Forum: General discussion
Topic: Using raspberry pi to measure angle newbie
Replies: 5
Views: 124

Re: Using raspberry pi to measure angle newbie

This would be quite an expensive way of doing it. https://www.leveldevelopments.com/products/inclinometers/inclinometer-sensors/lch-360-usb-usb-inclinometer-sensor-360-range-usb-interface/ There are others. You could simply have a rotation sensor on the arm pivot perhaps? Or a laser distance sensor?...
by jamesh
Wed Jun 20, 2018 2:22 pm
Forum: General discussion
Topic: STICKY: PMs being turned off from June 13
Replies: 40
Views: 2009

Re: STICKY: PMs being turned off from June 13

One question: is there any way to tag or notify a person of a post? Does quoting a previous post notify the original poster? Does tagging with @[username] notify the user? I don't know of a way (other than what klricks mentioned), but I'm not an expert on the forum software. But, really, that's the...
by jamesh
Wed Jun 20, 2018 1:10 pm
Forum: General discussion
Topic: use pi zero w in commercial production
Replies: 57
Views: 9617

Re: use pi zero w in commercial production

Some Chinese manufacturers copy legit designs right from the source. They make a genuine product then sell the source code to another factory, or manufacture the exact same item for a competitor. Crazy. I thought all Zeros are manufactured by Sony in Wales... I find it hard to believe that someone ...
by jamesh
Wed Jun 20, 2018 1:03 pm
Forum: General discussion
Topic: use pi zero w in commercial production
Replies: 57
Views: 9617

Re: use pi zero w in commercial production

China is getting good at making copycats. I would not trust that is genuine. That, or you will not in the end get the price advertised. Some Chinese manufacturers copy legit designs right from the source. They make a genuine product then sell the source code to another factory, or manufacture the e...
by jamesh
Wed Jun 20, 2018 12:14 pm
Forum: Advanced users
Topic: Documentation bugs: RPi2&3 GPIO electrical specs
Replies: 130
Views: 9251

Re: Documentation bugs: RPi2&3 GPIO electrical specs

Is hysteresis really that difficult to measure. I sort of expected this to be a pretty standard test from a hardware viewpoint. Is there no standard testing device? Wouldn't something as simple as a digital POT allow a test? Hysteresis is easy to measure. However you would only be measuring that on...
by jamesh
Wed Jun 20, 2018 12:06 pm
Forum: General discussion
Topic: Be careful with Pi Zero and CSI slot
Replies: 34
Views: 6750

Re: Be careful with Pi Zero and CSI slot

Hi, the CSI slot has broken on my Pi Zero, both end pieces has broken off and left the middle piece wedged in with the camera ribbon. This has made it near on impossible to remove the camera ribbon, does anyone have any ideas as to what i can do. I can see a sliver of the CSI locking piece but not ...
by jamesh
Wed Jun 20, 2018 9:26 am
Forum: General discussion
Topic: use pi zero w in commercial production
Replies: 57
Views: 9617

Re: use pi zero w in commercial production

I need to order 20,000 to 40,000 units PiZero OR PiZeroW. Just joined so I can not PM. maybe someone can PM me with email address of who I can contact? Thanks! I would not buy Pi Zero W in China, but was surprised that you can buy huge volumes there, although I doubt that you will get the same Pi Z...
by jamesh
Wed Jun 20, 2018 9:24 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Need Help!!!!! Screen compatibility issues
Replies: 2
Views: 56

Re: Need Help!!!!! Screen compatibility issues

Most probably not possible. Probably needs interface chips, and a load of software to set up the DSI driver on the PI, which would require information that is probably not available for the screen in question.
by jamesh
Wed Jun 20, 2018 8:51 am
Forum: General discussion
Topic: STICKY: PMs being turned off from June 13
Replies: 40
Views: 2009

Re: STICKY: PMs being turned off from June 13

If we get legal confirmation that we are in the clear, then I guess we would reopen PM's, until then, stays as it is.

You can use info@raspberrypi.org to contact us directly.
by jamesh
Wed Jun 20, 2018 7:00 am
Forum: Troubleshooting
Topic: Pi3 B V1.2 board unstable on BOINC Seti@Home
Replies: 9
Views: 198

Re: Pi3 B V1.2 board unstable on BOINC Seti@Home

Is this 3b or 3b+?
by jamesh
Tue Jun 19, 2018 4:01 pm
Forum: General discussion
Topic: Graphics Programming
Replies: 6
Views: 2160

Re: Graphics Programming

Why does it matter how old it is? As long as it's new information relevant to the original topic. Could be useful for anyone googling the the thing today. Exactly. I have no problem with thread resurrection as long as it is valid, which this is. It might also win the prize for the oldest thread res...
by jamesh
Tue Jun 19, 2018 3:51 pm
Forum: Troubleshooting
Topic: How to measure FPS on picamera v2
Replies: 4
Views: 85

Re: How to measure FPS on picamera v2

As i said above, the raspivid application has an annotate feature which can add a frame number to each frame. It's possible the python camera library can also do that. Check the picamera documentation for details on that, as I am unfamiliar with it. To display the FPS, not so sure. Generally in vide...
by jamesh
Tue Jun 19, 2018 3:45 pm
Forum: Troubleshooting
Topic: Pi3 B V1.2 board unstable on BOINC Seti@Home
Replies: 9
Views: 198

Re: Pi3 B V1.2 board unstable on BOINC Seti@Home

Hi, any advice for the warranty ? I played a little bit with the defective board. It seems that when maintained very (very) cold into the ice cubes compartment of a fridge, with fan (CPU stuck < 25°C even with 4 core working 100%), there is no crash, even after hours of hard work. The RPi was drive...

Go to advanced search