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by kattle87
Fri Dec 23, 2011 9:43 am
Forum: General discussion
Topic: Duracell 5 Hour Portable USB Charger/Battery pack
Replies: 26
Views: 9457

Re: Duracell 5 Hour Portable USB Charger/Battery pack

<r>[quote]<B><s>[b]</s>Quote from sylvan on December 22, 2011, 20:08<e>[/b]</e></B><br/> 15Ah is not a measure of energy.[/quote]<br/> <br/> I am an engineer and I\'m terribly ashamed of what I wrote there. I was probably having a stroke at the time of writing <E>:P</E><br/> Well, I wasn\'t relating...
by kattle87
Mon Nov 21, 2011 9:51 am
Forum: General discussion
Topic: Publicity stunt...
Replies: 56
Views: 8099

Re: Publicity stunt...

<t>How about this:<br/> You get a desktop\'s case, you link up the external HDMI, ethernet and 2 USBs with elongation cables to the raspi hidden inside. Make sure to get some batteries to run the raspi (I know it should be regulated 5V but you should be fine for running it for 10 minutes out of AA b...
by kattle87
Thu Nov 03, 2011 1:39 am
Forum: General discussion
Topic: Using the board for commercial projects.
Replies: 24
Views: 5609

Re: Using the board for commercial projects.

<r>But what if I am just describing what I\'m selling???<br/> I mean, it\'s like I made a video on youtube describing my product (I don\'t know, something to be put in a car) and I said \"well, I took a philips monitor, a raspberry PI and a thrust USB hub\".<br/> Especially when selling as DYI kits ...
by kattle87
Wed Nov 02, 2011 8:41 pm
Forum: General discussion
Topic: Using the board for commercial projects.
Replies: 24
Views: 5609

Re: Using the board for commercial projects.

I guess you don\'t need the permissions of the trademark holder to say \"there\'s a raspberry PI in this box\"...
If I\'m wrong, well... It\'s probably the trademark laws that are even more flawed of what I was expecting.
by kattle87
Tue Nov 01, 2011 1:11 pm
Forum: General discussion
Topic: Duracell 5 Hour Portable USB Charger/Battery pack
Replies: 26
Views: 9457

Re: Duracell 5 Hour Portable USB Charger/Battery pack

<r>I don\'t want to be rude or anything, but I wouldn\'t trust things from dealextreme. And that 15Ah sounds really fishy. The box is small, how the hell do they packed so much energy?<br/> According to wikipedia, lithium packs at most 250Wh/Kg. that thing weights 270g, let\'s suppose 250 are of bat...
by kattle87
Tue Nov 01, 2011 2:55 am
Forum: Off topic discussion
Topic: Most Recent Purchase Thread
Replies: 23
Views: 5472

Re: Most Recent Purchase Thread

Food I guess?? :P
An arduino UNO that will become a wonderful input device for my raspi-based wearable PC.
by kattle87
Tue Nov 01, 2011 2:47 am
Forum: Off topic discussion
Topic: BeagleBone: US$89 hardware hacker dev board
Replies: 11
Views: 2303

Re: BeagleBone: US$89 hardware hacker dev board

I don't know... Programming the board through a web browser interface honestly sounds ridiculous to me. This looks like a "cooler arduino" but far more costly.
I have honestly no idea about what can be done with that bone that can't be done with an arduino + a raspi ^^
by kattle87
Tue Nov 01, 2011 2:30 am
Forum: General discussion
Topic: Hows this for a power supply?
Replies: 13
Views: 2496

Re: Hows this for a power supply?

<r>I do hope we get at least 600 mA for the devices, that means one should be able (given a good PSU) to get one power hungry and one \"energy-cheap\" device.<br/> Besides, my nokia PSU is 1.2 A so if model B raspi eats 600m + 600m for USB, I\'ll be happy <E>:P</E><br/> And this could save buying a ...
by kattle87
Mon Oct 31, 2011 6:04 pm
Forum: General discussion
Topic: Duracell 5 Hour Portable USB Charger/Battery pack
Replies: 26
Views: 9457

Re: Duracell 5 Hour Portable USB Charger/Battery pack

<r>Perhaps at least there\'s no need for a discarge-prevention circuit. But in the end, buying a USB pack will probably be just cheaper and safer, there are some decent ones for 40€. If you had to go through buying the batteries, the chips for charging, the regulator for 5V output, you are probably ...
by kattle87
Mon Oct 31, 2011 12:04 pm
Forum: General discussion
Topic: Duracell 5 Hour Portable USB Charger/Battery pack
Replies: 26
Views: 9457

Re: Duracell 5 Hour Portable USB Charger/Battery pack

<r>One thing I don\'t understand...<br/> <URL url="http://www.ebay.co.uk/itm/2-x-18650-ULTRAFIRE-Li-ion-2400mAh-3-7V-BATTERIES-UK-/320782587202?pt=UK_ConsumerElectronics_Batteries_SM&hash=item4ab021d542"><LINK_TEXT text="http://www.ebay.co.uk/itm/2-x-18650-ULT ... 4ab021d542">http://www.ebay.co....
by kattle87
Sun Oct 30, 2011 11:36 pm
Forum: General discussion
Topic: Can a powered hub feed R-PI?
Replies: 46
Views: 6669

Re: Can a powered hub feed R-PI?

<t>No need for a 4 port USB, but a 3 would be nice... you could probably even fit that more or less \"comfortably\" by placing the third port vertically and not horizontal. But well, my use for the raspi gonna be headless server or mobile computing, that means I will be either getting model B with n...
by kattle87
Sun Oct 30, 2011 11:21 pm
Forum: Off topic discussion
Topic: 64-bit ARM architecture: ARMv8
Replies: 4
Views: 4567

Re: 64-bit ARM architecture: ARMv8

well, it had to happen sooner or later...
by kattle87
Sun Oct 30, 2011 5:09 pm
Forum: Other projects
Topic: Pirate box, anyone?
Replies: 16
Views: 6302

Re: Pirate box, anyone?

<t>The ruby code just runs the web interface, should be lightweight enough. The streaming is actually managed by VLC (and you can usually just go with a passthrough profine so no transcoding is needed -> should work well on a 700Mhz ARM11) but "streaming for multiple users" will probably be 3 people...
by kattle87
Sun Oct 30, 2011 4:39 pm
Forum: General discussion
Topic: Can a powered hub feed R-PI?
Replies: 46
Views: 6669

Re: Can a powered hub feed R-PI?

<t>Well, does this mean that my phone actually asks for more power even when turned off?And there are some cables (according to some site, perhaps even wikipedia) in which the data lines are shorted, and I\'m expecting that the power cannot be negotiated when you have no data line? So I hope there a...
by kattle87
Sun Oct 30, 2011 2:47 am
Forum: Other projects
Topic: Pirate box, anyone?
Replies: 16
Views: 6302

Re: Pirate box, anyone?

<t>You'd better go with a model A:<br/> your storage could be just the SD card (16 GB), you get one USB wifi, power it, and you're done. It might be as little as 50€. And, you can add a knots server (arm11 should be enough for ruby to work properly I hope) and make it a pirate-video-streaming box. H...
by kattle87
Fri Oct 28, 2011 1:52 pm
Forum: General discussion
Topic: Graphics preformance
Replies: 51
Views: 6608

Re: Graphics preformance

Question, how comes the SD is "just slow"? I mean, the various SDs should have different in/out speeds, or am I missing something? (like, the bus for the SD is slow, etc)
by kattle87
Fri Oct 28, 2011 11:23 am
Forum: Other projects
Topic: An OS thats actually bears resemblance to the RPs many use cases
Replies: 11
Views: 4361

Re: An OS thats actually bears resemblance to the RPs many use cases

Yes, those are still "desktop oriented", but with a small resolution in mind!
It would surely fit if you went to hook up a small screen and use it as handheld, but it won't be the best choice at 1080p probably!
by kattle87
Thu Oct 27, 2011 6:44 pm
Forum: General discussion
Topic: Wishes for 2nd gen Raspberry Pi
Replies: 272
Views: 66639

Re: Wishes for 2nd gen Raspberry Pi

<t>Quote from obarthelemy on October 3, 2011, 20:55<br/> I do realize that the Pi is very cheap for all it offers. Having to buy all those extras make it less inexpensive, and less practical to carry around.<br/> <br/> I think the official Pi goal to have kids own their own and computer clubs/classe...
by kattle87
Thu Oct 27, 2011 5:18 pm
Forum: General discussion
Topic: Consider throwing out the "Model A" / "Model B" naming convention.
Replies: 22
Views: 2762

Re: Consider throwing out the "Model A" / "Model B" naming convention.

@Garyamort
It\'s just that I\'m so happy with the sin(k*Pi) being zero for every k belonging to Z!
by kattle87
Thu Oct 27, 2011 3:59 pm
Forum: Other projects
Topic: An OS thats actually bears resemblance to the RPs many use cases
Replies: 11
Views: 4361

Re: An OS thats actually bears resemblance to the RPs many use cases

<t>And there's a good chunk of difference in processing power between the two, since they got a cortex A8 while we have a ARM11 ^^<br/> I don't think the Pandora OS would be the best for the raspi, it wouldn't be really fitting - it's designed for a handheld device, with a touchscreen in mind etc......
by kattle87
Wed Oct 26, 2011 5:50 pm
Forum: General discussion
Topic: Power supply news!
Replies: 176
Views: 23172

Re: Power supply news!

<r>To all people saying \"yes there are chargers going 500V instead of 5V\", would you expect the raspi to survive better if it had a voltage regulator accepting a max of 22 volts? I think the issue is just the same as before. If possible, from a \"USA/Europe\" point of view it\'s a bit better, sinc...
by kattle87
Tue Oct 25, 2011 8:14 pm
Forum: General discussion
Topic: Power supply news!
Replies: 176
Views: 23172

Re: Power supply news!

<r>Mitigate against the damage?<br/> Do you think they sell USB chargers that put out a steady 240V AC instead of 5 Volts or what? <E>:P</E><br/> The worst that\'s gonna happen is random reboots or shutdowns. If you really have to be scared of anything, be scared of having to format your SD card due...
by kattle87
Tue Oct 25, 2011 6:18 pm
Forum: General discussion
Topic: Power supply news!
Replies: 176
Views: 23172

Re: Power supply news!

the clamps and fuses are before the 5V line going to the HDMI, so, no.
You will probably blow your raspi BEFORE the TV
by kattle87
Tue Oct 25, 2011 5:02 pm
Forum: General discussion
Topic: Power supply news!
Replies: 176
Views: 23172

Re: Power supply news!

<t>I\'ve seen some 10€ ones, powered via USB (handy but crazy?) but I\'ve been looking more for other interesting things, like USB emergency batteries. Those are a bit expensive for sure, like 40€, but they give you a straight 5V, can provide up to 1A (pretty sure it\'s steady, not peak), a grand to...
by kattle87
Mon Oct 24, 2011 5:13 pm
Forum: General discussion
Topic: Power supply news!
Replies: 176
Views: 23172

Re: Power supply news!

<t>One question: almost everyone here is putting a 0.7 amp as a possible draw for the raspi.<br/> Do you mean it will continuously draw the same current with no differences given for different CPU/GPU loads?<br/> I would expect some differences between full load and low load. Not sure about it but I...

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