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by mc349
Fri Apr 25, 2014 7:30 am
Forum: General discussion
Topic: The longest living SD card solution.
Replies: 9
Views: 8460

Re: The longest living SD card solution.

Are you running from the mains? You could prevent a hard power reset causing corruption, by putting a battery in your power setup. So the mains is charging the battery pack and the PI is running from the battery pack. When the mains power fails the battery still runs the PI for a while, you could ev...
by mc349
Sun Feb 23, 2014 7:43 pm
Forum: General discussion
Topic: Booting from a USB Host
Replies: 9
Views: 1955

Re: Booting from a USB Host

The PI actually loads it's firmware (BIOS if you will) from the SD card before it starts loading the operating system. So you'll always need an SD card (or something emulating the SD card) plugged into the slot.
by mc349
Sat Oct 12, 2013 10:32 am
Forum: General discussion
Topic: I am 92% sure that I completely cooked my pi....
Replies: 10
Views: 1648

Re: I am 92% sure that I completely cooked my pi....

Since we think it's fried anyway and there's nothing to lose at this point you could try:

- Shorting out the polyfuse and see if that helps.
- Short out any diodes in the power circuit.
- Try back feeding power in via the GPIO ports / usb ports
- Try feeding power in at the test points.
by mc349
Fri Jul 12, 2013 1:18 pm
Forum: General discussion
Topic: How to know power usage?
Replies: 7
Views: 12275

Re: How to know power usage?

To be pedantic, you're just measuring voltage there. To work out power (watts) you also need to know the current being drawn. Then you can work out the power from P= I V (i.e. power=current multiplied by voltage). Measuring the current draw is more difficult, you need to get a spare USB cable and cu...
by mc349
Mon Jun 24, 2013 7:32 am
Forum: General discussion
Topic: just stopped working
Replies: 12
Views: 1800

Re: just stopped working

I am a little new to this. How can i identify if overclocking is the problem Have you enabled overclocking? I doubt you'd need it for playing MP3s. If you have re-edit your config to turn it off again and retest. If that doesn't fix it then do another test with a different power source (just to rul...
by mc349
Mon Mar 04, 2013 8:26 am
Forum: General discussion
Topic: Slight issue with new Raspberry Pi
Replies: 9
Views: 2175

Re: Slight issue with new Raspberry Pi

Wrong photo Jim? Or maybe it needs to be shrunk?
by mc349
Sun Feb 10, 2013 12:05 am
Forum: General discussion
Topic: How does an end user program this device?
Replies: 35
Views: 8850

Re: How does an end user program this device?

I expect you could install the Mono framework (Open Source version of the Microsoft.NET framework) and then program in C# or VisualBasic.NET.

I would do it myself but my memory card isn't big enough.
by mc349
Mon Feb 04, 2013 10:22 pm
Forum: General discussion
Topic: Will it damage Raspberry Pi If you put 12v on 5v pin?
Replies: 5
Views: 1367

Re: Will it damage Raspberry Pi If you put 12v on 5v pin?

NewAtlantis wrote:I need schematic how to shrink 12v to 5v. Anyone know how?
These are good: http://www.ebay.co.uk/itm/170734419936
by mc349
Sun Jan 20, 2013 8:27 pm
Forum: General discussion
Topic: Save sd card space delete stuff from /usr/share/locale ?
Replies: 1
Views: 2657

Save sd card space delete stuff from /usr/share/locale ?

The /usr/share/locale directory on my SD card is 150Mb can I get rid of the one's I don't want? e.g. fr 5Mb ru 4Mb es 4Mb de 4Mb etc. etc. My locale is currently en_GB which is what I want and I can't see myself ever using fr,ru,es or de etc. :-) root@raspberrypi:/# locale LANG=en_GB.UTF-8 LANGUAGE=...
by mc349
Sun Jan 20, 2013 4:51 pm
Forum: General discussion
Topic: Transistor Question
Replies: 21
Views: 5857

Re: Transistor Question

If your goal is protecting your PI you might like to think about going with an opto-isolator...
http://en.wikipedia.org/wiki/Opto-isolator
by mc349
Sat Jan 19, 2013 9:59 am
Forum: General discussion
Topic: Nuclear power station
Replies: 8
Views: 2049

Re: Nuclear power station

BirchJD wrote:I guess a project for a Hadron Collider is too ambitious then.
You might find you need to jumper across the polyfuses F1 and F2 to allow the Pi to power the Collider.
by mc349
Fri Jan 18, 2013 2:31 pm
Forum: General discussion
Topic: Connecting remotely UNIX program
Replies: 14
Views: 2486

Re: Connecting remotely UNIX program

Maybe the linux tool "expect" will prove helpful: http://expect.sourceforge.net/
To install type: "sudo apt-get install expect"
by mc349
Thu Jan 17, 2013 12:13 pm
Forum: General discussion
Topic: Wifi Performance
Replies: 3
Views: 1083

Re: Wifi Performance

Update: I left my performance tests running overnight (transferring lots of data from the PI to my PC over the wireless network). Unfortunately after transferring over 75 Gigabytes my Netgear router hung and all wireless connections stopped working. I had to reboot the router to get things going aga...
by mc349
Wed Jan 16, 2013 2:18 pm
Forum: General discussion
Topic: Wifi Performance
Replies: 3
Views: 1083

Re: Wifi Performance

Some more info: #ifconfig wlan0 wlan0 Link encap:Ethernet HWaddr 00:0f:54:11:11:11 inet addr:10.0.0.30 Bcast:10.0.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:6933293 errors:0 dropped:9 overruns:0 frame:0 TX packets:9534582 errors:0 dropped:0 overruns:0 carrie...
by mc349
Wed Jan 16, 2013 2:06 pm
Forum: General discussion
Topic: Wifi Performance
Replies: 3
Views: 1083

Wifi Performance

Hello, I have got a £3 Ralink RT5370 USB wireless adapter plugged into my pi and it's working fine, but I thought I'd test the speed of it. It says it's connected at 54Mbits / sec #iwconfig wlan0 wlan0 IEEE 802.11bgn ESSID:"wlan" Mode:Managed Frequency:2.412 GHz Access Point: 00:44:11:22:4...
by mc349
Sat Jan 05, 2013 4:27 pm
Forum: General discussion
Topic: JTAG pins missing...
Replies: 4
Views: 1151

Re: JTAG pins missing...

If you like I'll happily swap you my old early 256Mb board (with pins!) for one of the new 512Mb versions? :-)
by mc349
Fri Jan 04, 2013 10:10 am
Forum: General discussion
Topic: best wifi dongle
Replies: 18
Views: 9241

Re: best wifi dongle

This one worked first time for me: http://www.ebay.co.uk/itm/130800556591 latest Raspbian OS detected it first time and already had the right drivers installed, all I had to do was to put in my wireless AP settings in /etc/network/interfaces (If that link expired it's a Ralink 5370 device for £3) Do...
by mc349
Thu Jan 03, 2013 11:39 pm
Forum: General discussion
Topic: Plea for cheap battery PSU for Rpi Robot
Replies: 25
Views: 6604

Re: Plea for cheap battery PSU for Rpi Robot

What about something like this? You use your cheap AAs to power it and then let the module regulate down to the voltage required: http://www.ebay.co.uk/itm/390513655150 Or search for LM2577 on eBay. I have one which I'm using to power the PI from a 12V source and hope to eventually put it in the car.
by mc349
Thu Dec 20, 2012 10:50 pm
Forum: General discussion
Topic: environmental specs
Replies: 8
Views: 4052

Re: environmental specs

Are you thinking about low or high temperature extremes? Hopefully not both! If it's low temperatures put it in an insulated box maybe along with something to provide a little heat e.g. http://www.ebay.co.uk/itm/290628113668 (powered from a hub rather than from the PI of course) If that gets too hot...
by mc349
Wed Dec 19, 2012 1:59 pm
Forum: General discussion
Topic: Boblight possible?
Replies: 707
Views: 168768

Re: Boblight possible?

I've never heard of boblight, but does this link help any?
https://code.google.com/p/boblight/wiki ... spberry_Pi
by mc349
Tue Dec 18, 2012 8:15 am
Forum: General discussion
Topic: NPOV and all that
Replies: 23
Views: 2911

Re: NPOV and all that

39 so I just fit the demographic. Was 38 when I ordered the PI, 39 when I received it :-)

Just remember nerds get paid well girls...
by mc349
Sat Nov 24, 2012 3:43 pm
Forum: General discussion
Topic: Raspberry Pi doesn't boot - Three green lights
Replies: 8
Views: 1596

Re: Raspberry Pi doesn't boot - Three green lights

As long as the charger output voltage is 5V DC then the raspberry PI will only draw what it needs from it. If the charger can't keep it up you'll have boot problems and crashes, otherwise it'll be fine. I use a Nokia AC-10X charger with is rated 5V and 1200mA which comfortably runs the PI, it probab...
by mc349
Thu Sep 27, 2012 9:26 pm
Forum: General discussion
Topic: Thrust the Game
Replies: 5
Views: 2058

Re: Thrust the Game

Ok try this.. 1. Open a command prompt (bash shell / terminal) 2. cd / 3. find . | grep -i thrust The first command ensures you are in the root directory. The find command finds every file and pipes that list of files through grep which is doing a case insensitive match for the word thrust. Hopefull...
by mc349
Mon May 14, 2012 7:23 am
Forum: For sale
Topic: Discount UK 5V 1000mA USB chargers - 99p
Replies: 9
Views: 11535

Re: Discount UK 5V 1000mA USB chargers - 99p

Well it's arrived.  £3.49 for a AC-10X Nokia charger on Amazon UK,  ordered it Sunday arrived on Tuesday  so no complaints there. Just wanted to feedback that this unit seems to work perfectly with the PI, no crashes / fires so far! I'm running an old Labtec wireless mouse / keyboard + PS2 adapter ...
by mc349
Mon May 14, 2012 7:18 am
Forum: General discussion
Topic: The new forums are here!
Replies: 115
Views: 29734

Re: The new forums are here!

Just wanted to say.... It's so fast! Thank you.

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