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by jamesh
Wed Jun 20, 2018 3:35 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 0
Views: 5

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: 9565

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: 4
Views: 62

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: 34
Views: 1885

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: 9565

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: 9565

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: 129
Views: 9199

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: 33
Views: 6694

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: 9565

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: 1
Views: 23

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: 34
Views: 1885

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: 8
Views: 171

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: 2158

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: 84

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: 8
Views: 171

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...
by jamesh
Tue Jun 19, 2018 3:41 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 398
Views: 22127

Re: Raspberry Pi 3 B+ lockups

debugging of stuff is harder than you think sometimes - especially with hardware I had an issue with Kingston networking cards: The first generation worked great but they revised the design without changing the product number. The revised cards caused system crashes and spontaneous reboots. It took...
by jamesh
Tue Jun 19, 2018 2:20 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 398
Views: 22127

Re: Raspberry Pi 3 B+ lockups

The situation with mine wasn't the power supply for the rebooting. Running a 5.2v 2.4A supply (raspberry pi recommended supply from adafruit). Pi also was tried with and without the UPS-pico+ HV450 hat. Voltage at the GPIO 5v pins was monitored, was seeing a solid 5.1-5.2v. only time it dropped bef...
by jamesh
Tue Jun 19, 2018 1:25 pm
Forum: Raspbian
Topic: bluetoothd: 100% CPU usage if keyboard turn off (standby)
Replies: 3
Views: 223

Re: bluetoothd: 100% CPU usage if keyboard turn off (standby)

This is presumably a problem with the bluetooth software stack somewhere, and not specific to the Pi if there is a generic Debian report on it. I guess the report need to go the the bluetooth stack devs.
by jamesh
Tue Jun 19, 2018 1:22 pm
Forum: Troubleshooting
Topic: Raspbian OS unreachable after several hours of use
Replies: 22
Views: 522

Re: Raspbian OS unreachable after several hours of use

The OS IS Raspbian but some additional packages have been added to the original Raspbian image.The core OS remains unchanged. Are you sure the core OS is unchanged? Which packages are installed? If the problem is in one of those packages, is that Raspberry Pi problem? How do we know if the problem ...
by jamesh
Tue Jun 19, 2018 1:19 pm
Forum: Camera board
Topic: camera v2.1 variable fps?
Replies: 8
Views: 464

Re: camera v2.1 variable fps?

6by9, After your last message, in which you suggested I load the v4l2 driver, I realized a few things. When I first connected the pi camera and booted up the pi, I first tried running cvlc to stream the camera (without raspivid piping into it). This had worked on another machine before, so I just e...
by jamesh
Tue Jun 19, 2018 10:22 am
Forum: Advanced users
Topic: Documentation bugs: RPi2&3 GPIO electrical specs
Replies: 129
Views: 9199

Re: Documentation bugs: RPi2&3 GPIO electrical specs

OK, quick chat around the team, we will not be supplying that information, simply because Broadcom do not supply it to us, and we do not have the resources to determine it ourselves. Not sure how significant the number actually is; in the past this GPIO block has been used by a number of mainstream ...
by jamesh
Tue Jun 19, 2018 8:53 am
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 398
Views: 22127

Re: Raspberry Pi 3 B+ lockups

James, I think you do have one of his SD cards in a Pi3B+ he sent you (he wasn't saying it was the SD card) It's obviously the 3B+ Ethernet chipsets having problems (soft or hard), but it may also be the way it interacts with some methods from the routers ethernet chipset, which can be found here (...
by jamesh
Tue Jun 19, 2018 7:33 am
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 398
Views: 22127

Re: Raspberry Pi 3 B+ lockups

I've just had a look through your posts and cannot see a mention of the router etc you are using, or if you are running through other switches/powerlines or a direct connection. Is the router at default setting, does it have some other option been enabled. Somebody else may be able to recreate your...
by jamesh
Tue Jun 19, 2018 7:32 am
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ lockups
Replies: 398
Views: 22127

Re: Raspberry Pi 3 B+ lockups

bensimmo wrote:
Mon Jun 18, 2018 8:26 pm
I'm assuming this github thread seems to be the main ethernet debugging thread similar to this?
https://github.com/raspberrypi/linux/issues/2482
Closest one I think.
by jamesh
Tue Jun 19, 2018 7:31 am
Forum: Advanced users
Topic: Documentation bugs: RPi2&3 GPIO electrical specs
Replies: 129
Views: 9199

Re: Documentation bugs: RPi2&3 GPIO electrical specs

OK, the requested data (or at least quite a bit of it), has now been published in a new CM datasheet. Thanks jamesh for letting us know, and also to whoever assembled the data for 3.3V. A very useful step forward. There is one significant missing spec, of the ones we discussed in this thread, and t...

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