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by selsinork
Mon Jul 30, 2012 9:20 am
Forum: General discussion
Topic: Poll : Which distro?
Replies: 9
Views: 1002

Re: Poll : Which distro?

bob_binz wrote:Please expand if "other" is chosen.
Other. Self compiled from zero.
by selsinork
Thu Jul 05, 2012 7:59 am
Forum: General discussion
Topic: Mpeg 2 poll
Replies: 57
Views: 5681

Re: Mpeg 2 poll

not every country uses MPEG2 but many do, including UK for Freeview I'm surprised we haven't yet worked out that we can wedge another 100 shopping channels onto freeview by moving all the multiplexes to DVB-T2 and h.264, probably forcing a large number of people to go buy yet another freeview box d...
by selsinork
Thu Jul 05, 2012 7:53 am
Forum: General discussion
Topic: Mpeg 2 poll
Replies: 57
Views: 5681

Re: Mpeg 2 poll

Again, it depends on which side of the swamp you're on. UK Roku2 price is around £99 = $154. Given that the Pi is $25 that means it would need to cost less than $129 to impliment before it would become cheaper to buy a Roku2. A slightly simplistic analysis I know, but I for one would be willing to ...
by selsinork
Thu Jul 05, 2012 7:21 am
Forum: General discussion
Topic: Mpeg 2 poll
Replies: 57
Views: 5681

Re: Mpeg 2 poll

Unlike if Broadcom supplied the MPEG2 codec as part of the price of the SoC where they would have a corporate target. I'll suggest an alternative, although I'm pragmatic enough to realise the chances are slim.. Broadcom could release just enough docs on the GPU to allow an outside group to write a ...
by selsinork
Thu Jul 05, 2012 6:44 am
Forum: General discussion
Topic: Mpeg 2 poll
Replies: 57
Views: 5681

Re: Mpeg 2 poll

I refuse to believe that a secure system couldn't be set up, and I certainly wouldn't mind if they made it linked exactly to a single Pi, and said tough luck if that Pi died. I'm inclined to agree with you on what happens if the Pi dies, but that only works if the incremental cost of the license is...
by selsinork
Wed Jul 04, 2012 7:58 pm
Forum: General discussion
Topic: Mpeg 2 poll
Replies: 57
Views: 5681

Re: Mpeg 2 poll

I think he was sort of agreeing with you wasn't he? Wasn't it just a suggestion for policing a way of paying for a license? I agree $70 was a bit steep though :) but I'd be happy to pay extra for a mpeg2 ready version and I'm sure $70 was plucked as an example.. Yep, just an example... but delibera...
by selsinork
Wed Jul 04, 2012 7:34 pm
Forum: General discussion
Topic: Mpeg 2 poll
Replies: 57
Views: 5681

Re: Mpeg 2 poll

I don't understand the hostility towards this request. There's no hostility on my part. but if they get it right it could provide codecs useful for a wide audience and make some cash. Why charge $70? Well to make some cash :) The point isn't really how much, it's more the logistics of doing it in s...
by selsinork
Wed Jul 04, 2012 5:45 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 69895

Re: USB Port Current Boost

lrvick wrote: For reference here is a picture of the current attempt:
That's certainly an interesting way to connect the capacitor..
by selsinork
Wed Jul 04, 2012 5:36 pm
Forum: General discussion
Topic: Mpeg 2 poll
Replies: 57
Views: 5681

Re: Mpeg 2 poll

If you assume there's a market for it then surely the way to do it is to have something pre-programmed into the pi at the factory that enables or disables mpeg2, perhaps an OTP bit that isn't user accessable gets blown to disable mpeg2 on the $35 devices. As you can't undo that blown bit the $35 ver...
by selsinork
Wed Jul 04, 2012 4:33 pm
Forum: General discussion
Topic: Ground and GPIO backwards?
Replies: 11
Views: 1644

Re: Ground and GPIO backwards?

abishur wrote: My goblin might have fur
Did you feed it after midnight ?
;)
by selsinork
Wed Jul 04, 2012 4:30 pm
Forum: General discussion
Topic: How to get multiple UARTS?
Replies: 13
Views: 12900

Re: How to get multiple UARTS?

domesday wrote:Alternativly use a MAX3110E SPI URART to use the SPI connections on the GPIO connector.
Or a SC16IS762 dual port
by selsinork
Mon Jul 02, 2012 5:52 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: FTDI USB Serial Hangs
Replies: 137
Views: 133291

Re: FTDI USB Serial Hangs [Solved]

I've used the driver using debian linux on my laptop without any problems so I see no reason as to why the arm(pi) compiled versions should behave any different. Your laptop uses the same SoC as the Pi ? If not, then the comparison isn't necessarily valid, different hardware, different usb host con...
by selsinork
Mon Jul 02, 2012 5:14 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Help with RS232 GPIO connection
Replies: 35
Views: 9605

Re: Help with RS232 GPIO connection

Can't tell from the photos, but U3 is probably a max232 or similar. From the photos here http://www.ehuoyan.com/english/ow_large.asp?proid=114&flagname=2 and here http://www.ehuoyan.com/english/ow_large.asp?proid=114&flagname=3 it seems likely that it would be possible to run the mifare from 3.3v, r...
by selsinork
Mon Jul 02, 2012 4:52 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Using the GPIO with Bidirectional Thyristors?
Replies: 18
Views: 5939

Re: Using the GPIO with Bidirectional Thyristors?

Alternatively how about something like a 74hct4066 or similar ?
by selsinork
Mon Jul 02, 2012 4:34 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: FTDI USB Serial Hangs
Replies: 137
Views: 133291

Re: FTDI USB Serial Hangs [Solved]

Oh, should have mentioned, if a different-than-kernel-driver API is interesting then you can also look at the libftdi stuff here http://www.intra2net.com/en/developer/libftdi/ It won't match up with the ftdi D2xx library, but the intention is similar - to give you access to more of the capabilities ...
by selsinork
Mon Jul 02, 2012 4:23 pm
Forum: General discussion
Topic: Orders opening up?
Replies: 8
Views: 907

Re: Orders opening up?

Was just looking at the Element14 web site and the following caught my eye: Shhhhh.... don't tell anyone about that. they'll be back ordered forever if you do ;) The four weeks on that page seems a little off. Was invited to order this morning and it came back with an estimated delivery of W/C 2012...
by selsinork
Mon Jul 02, 2012 2:07 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: FTDI USB Serial Hangs
Replies: 137
Views: 133291

Re: FTDI USB Serial Hangs [Solved]

It's worth noting that the D2xx stuff isn't so much a driver as it's a port of their windows dll over to linux. Nothing wrong with that as such, but I wouldn't expect normal /dev/ttyUSBn style linux serial port access. You'll have to build your own apps to their API. Also as they don't provide sourc...
by selsinork
Sun Jul 01, 2012 1:58 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Support for GPIO-driven interrupts
Replies: 47
Views: 69537

Re: Support for GPIO-driven interrupts

needs this to work properly on bootc's 3.2.2x kernels diff --git a/arch/arm/mach-bcm2708/include/mach/gpio.h b/arch/arm/mach-bcm2708/include/mach/gpio.h index 90a7ba2..a2f8a0f 100644 --- a/arch/arm/mach-bcm2708/include/mach/gpio.h +++ b/arch/arm/mach-bcm2708/include/mach/gpio.h @@ -40,6 +40,8 @@ sta...
by selsinork
Sat Jun 30, 2012 5:16 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 69895

Re: USB Port Current Boost

The best solution would be to bypass the USB polyfuses with two 1 ohm resistors, low enough for a minimal voltage drop, but high enough to limit inrush current to something the 47uF cap can deliver, if that doesn't work mount a new 220uF (microfarad, not picofarad) capacitor near (but not behind) t...
by selsinork
Tue Jun 26, 2012 6:23 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Powering the Pi from GPIO
Replies: 23
Views: 8856

Re: Powering the Pi from GPIO

abishur wrote:I might try to emulate the Pi's circuit protection as closely as possible and throw a capacitor in the mix too
the idea is not to mimick the polyfuse, the much-too-thin usb cable, or the 99p ebay phone charger :)
by selsinork
Tue Jun 26, 2012 6:17 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: New GPIO libraries
Replies: 21
Views: 17866

Re: New GPIO libraries

Hi Mike, I really like the idea of a library, and a perl interface to it rather than a python one is even better :) but.... (there's always a but...) it would be much nicer if it would use the underlying linux drivers instead of going directly to /dev/mem lots of reasons, but consider this simple on...
by selsinork
Sat Jun 23, 2012 7:44 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: FT-232R issues
Replies: 3
Views: 1106

Re: FT-232R issues

kshrwood02 wrote:reports itself as an FT-232R or 232RL (is there a difference?) I get /dev/ttyUSB0, but nothing functions.
FT232RL's have been proven to work for others here:
http://www.raspberrypi.org/phpBB3/viewt ... =44&t=8010
by selsinork
Fri Jun 22, 2012 9:04 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 69895

Re: USB Port Current Boost

One question, the fuses provide a small modicum of black flow prevention on the USB ports right? Not really, a fuse will pass current in either direction. If we're jumping things out would it be wise to put a diode in the mix to make sure a surge down the usb ports doesn't burn our pi? The thing ab...
by selsinork
Fri Jun 22, 2012 8:47 pm
Forum: General discussion
Topic: USB Port Current Boost (solved)
Replies: 247
Views: 69895

Re: USB Port Current Boost

digital_addict wrote:Just out of curiosity, what is the limit on a micro usb plug and socket? 2amps?
before, or after you vaporise the connector ?
:twisted:

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