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by GTR2Fan
Tue Apr 05, 2016 3:38 pm
Forum: Raspbian
Topic: Video Converter HandBrake 0.10.5 for RPi2&3
Replies: 53
Views: 35325

Re: Video Converter HandBrake 0.10.5 for RPi2&3

Disk space may be cheap, but it's not that cheap. Especially if you also need to backup that disk space, and it's measured in terabytes. Recoding to H264 saves a LOT of space (at least 50%). And recoding doesn't take much more extra time that simply ripping anyway. Agreed. I've never understood the...
by GTR2Fan
Sun Apr 03, 2016 5:58 pm
Forum: Troubleshooting
Topic: Overclock question
Replies: 3
Views: 844

Re: Overclock question

Code: Select all

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

Code: Select all

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
by GTR2Fan
Sun Apr 03, 2016 11:50 am
Forum: General discussion
Topic: Fast Memory Cards
Replies: 4
Views: 1174

Re: Fast Memory Cards

That's an interesting read, Flagbit. It's also further proof that a good microSD card can easily match or even beat a USB-connected mechanical hard drive, especially on small file reads/writes where even the best spinners often struggle to exceed a miserable 1MB/s. Overclock the card slot as well if...
by GTR2Fan
Sat Apr 02, 2016 3:50 pm
Forum: General discussion
Topic: Fast Memory Cards
Replies: 4
Views: 1174

Re: Fast Memory Cards

Roughly 45MB/s read/write if you overclock the card slot to 100MHz. Any more is a waste and is probably stealing from a card's small file read/write performance. Have a Google for CrystalDiskMark reports until you find a card that tops out at around 45MB/s sequential whilst giving the best 4K read/w...
by GTR2Fan
Fri Apr 01, 2016 9:02 pm
Forum: Off topic discussion
Topic: Would the world be a better place?
Replies: 24
Views: 3107

Re: Would the world be a better place?

morphy_richards wrote:... And the stakes are higher if it's buggy.
+1. Drugs testing with insects is nowhere near as good a model of their effects on a human being as testing with rodents.
by GTR2Fan
Fri Apr 01, 2016 8:58 pm
Forum: General discussion
Topic: I (partially) burned my Raspberry Pi 3
Replies: 24
Views: 5248

Re: I (partially) burned my Raspberry Pi 3

I don't think I've ever seen so much disinformation from a single poster in one thread before. Happy April Fools, Rive! :lol:
by GTR2Fan
Fri Apr 01, 2016 12:55 pm
Forum: Troubleshooting
Topic: LEDs
Replies: 47
Views: 5943

Re: LEDs

...most important point against "self"-mutilation argument, is, that, there are no burned, black, broken, or damaged pins, joints, or any parts on the board... False assumption. ... placing the monitor in all possible positions on top of pins to see if it will give any response... You've clearly bl...
by GTR2Fan
Tue Mar 29, 2016 5:20 pm
Forum: Other projects
Topic: Maximum current draw GPIO pins?
Replies: 9
Views: 2306

Re: Maximum current draw GPIO pins?

I'd go with replacing the diode with a 1k5 resistor. The 10k resistor between the gate and source could happily be increased to 47k or so if you want to reduce the potential divider effect it's having with the other resistor.
by GTR2Fan
Tue Mar 29, 2016 12:36 pm
Forum: Other projects
Topic: Maximum current draw GPIO pins?
Replies: 9
Views: 2306

Re: Maximum current draw GPIO pins?

Burngate wrote:I've just downloaded from AdaFruit, the gate threshold is 1.35v min, 1.80v typ, 2.35v max.
That's the gate threshold voltage, not the saturation voltage.

From the same datasheet...
Very Low RDS(on) at 4.5V VGS
It depends how 'on' you need it to be.
by GTR2Fan
Tue Mar 29, 2016 10:15 am
Forum: Media centres
Topic: Problem HDD
Replies: 3
Views: 928

Re: Problem HDD

Try adding...

Code: Select all

max_usb_current=1
...to config.txt.
by GTR2Fan
Mon Mar 28, 2016 6:52 pm
Forum: Other projects
Topic: Maximum current draw GPIO pins?
Replies: 9
Views: 2306

Re: Maximum current draw GPIO pins?

I'm building a python script to control 16 different GPIO outputs with PWM. each pin is connected to a 1N4148 diode then connected to MOSfet IRLB8721 and they drive white and rgb led strips on 12V. with 4 outputs on at the same time it works fine, but is it safe to turn 16 on at the same time? (i h...
by GTR2Fan
Mon Mar 28, 2016 3:06 pm
Forum: Troubleshooting
Topic: Is my SDCard damaged?
Replies: 3
Views: 823

Re: Is my SDCard damaged?

dawed wrote:One of my systems (saddly my accordeon project with lot of hours to build up) don't start any more..
Restore your backup to another SD card then you're free to either experiment with the possibly dead card to see if it can be recovered or is ready for the bin.
by GTR2Fan
Mon Mar 28, 2016 3:02 pm
Forum: General discussion
Topic: Raspberry u (new) (Proposal)
Replies: 8
Views: 1488

Re: Raspberry u (new) (Proposal)

With every new release of a Raspberry Pi, we see a lot of disappointed users (myself included) that it doens't have Gigabit Ethernet, or 2+ GB RAM, USB 3.0, or whatever... And the reason seems to be compatibility issues with the older models and the ability to keep the price low. As the latter is t...
by GTR2Fan
Mon Mar 28, 2016 2:43 pm
Forum: Beginners
Topic: web browser for radio streaming??
Replies: 22
Views: 5616

Re: web browser for radio streaming??

i have noticed playing my radio stream take 46% processor power when full screen and 3% when minimized That's interesting. I wonder if the way you're accessing the stream is causing the high CPU usage. I've just tried similar here with Chromium 48 using tunein.com as my radio station portal and it'...
by GTR2Fan
Mon Mar 28, 2016 2:26 pm
Forum: Troubleshooting
Topic: Help, I get this screen when my pi 2 boots :)
Replies: 3
Views: 781

Re: Help

samuelj14 wrote:you MUST have flash for this to load
?
by GTR2Fan
Mon Mar 28, 2016 12:50 pm
Forum: Beginners
Topic: Necessary Power Supply?
Replies: 8
Views: 1874

Re: Necessary Power Supply?

Taxicletter wrote:What about a maximum? I found a solar-powerbank quite cheap, but it is 5V 3A. Will that damage the Pi?
Current doesn't work like that. A 500 billion GigaAmp PSU would be fine as long as it was still 5V. Anything attached to any power supply will only take the current it needs.
by GTR2Fan
Sat Mar 26, 2016 8:54 pm
Forum: General discussion
Topic: Many questions for the Pi 3 users
Replies: 8
Views: 1931

Re: Many questions for the Pi 3 users

So would UHS-3 be super over kill on the SD card? Also has anyone gone past 128gb on SD cards? I was thinking of putting roms for various emulators on the SD card. UHS-III would probably be overkill. Any card that can exceed around 22MB/s reads and writes is wasted unless you plan on overclocking t...
by GTR2Fan
Sat Mar 26, 2016 5:05 pm
Forum: General discussion
Topic: Pi 3 Overheating Issue?
Replies: 110
Views: 108622

Re: Pi 3 Overheating Issue?

Option to resolve overheating (on pi3) How is recommending someone to overclock an already hot system going to help resolve overheating? note- this is very minimal and stable, and should pretty much work with all pi3's. You've already been told umpteen times by umpteen people that this is not true,...
by GTR2Fan
Sat Mar 26, 2016 2:03 pm
Forum: Beginners
Topic: clone sd card?
Replies: 27
Views: 49254

Re: clone sd card?

It says size is 62333952 sectors available 61415424 why would it do this when they are both 32Gb cards Because neither of them are 32GB cards, and the second is slightly smaller than the first. 32GB cards don't exist. Neither do 4GB, 8GB, 64GB, etc. They're all slightly undersized, often by differi...
by GTR2Fan
Tue Mar 22, 2016 9:25 pm
Forum: Advanced users
Topic: Pi3 sdram freq 900MHz?
Replies: 11
Views: 3090

Re: Pi3 sdram freq 900MHz?

That's a totally different thing. We're not physically swapping the RAM for something else, we're just changing the speed it clocks at. It'll go as fast as it goes.
by GTR2Fan
Tue Mar 22, 2016 9:10 pm
Forum: Advanced users
Topic: Pi3 sdram freq 900MHz?
Replies: 11
Views: 3090

Re: Pi3 sdram freq 900MHz?

The answer to that question is random. There is no possible way of guessing how far an individual RAM chip will go, but 600MHz (DDR2-1200) seems to be the stable limit anyone has reached so far. On the basis that the RPF are happy to quote one measure of RAM speed for one product and a different mea...
by GTR2Fan
Tue Mar 22, 2016 9:06 pm
Forum: Advanced users
Topic: Pi3 sdram freq 900MHz?
Replies: 11
Views: 3090

Re: Pi3 sdram freq 900MHz?

No. They both use the same RAM chip. It's actually rated at DDR2-800, ie, 400MHz, so it's already slightly overclocked on both at the stock clock speed of 450MHz.
by GTR2Fan
Tue Mar 22, 2016 9:02 pm
Forum: Advanced users
Topic: Pi3 sdram freq 900MHz?
Replies: 11
Views: 3090

Re: Pi3 sdram freq 900MHz?

I did bring this up before in the hope that it might be corrected, but the information on the Pi3B still hasn't been changed to be in line with that given for the Pi2B. I think it's a shame as some people will undoubtedly be sucked in to buying a Pi3B thinking that the RAM is twice the speed of that...
by GTR2Fan
Tue Mar 22, 2016 10:33 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98361

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

jamesh wrote:That is a fairly stressful use case.
Plus the Pi in question is heavily overclocked as well as overvolted, so it's not representative of typical temperatures anyway.
by GTR2Fan
Mon Mar 21, 2016 8:23 pm
Forum: Beginners
Topic: Swap area
Replies: 11
Views: 1748

Re: Swap area

how so? What I mean is that, if you absolutely had to use a swap, and that means that you are going to be slow anyway, then are you sure that using a HDD to do those small writes is going to be significantly slower than on an SD-card? SD-cards are famous for having really poor small file random wri...

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