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by edent
Fri Jun 12, 2015 10:01 am
Forum: General discussion
Topic: Make a fan spin *really* fast
Replies: 5
Views: 1162

Make a fan spin *really* fast

Ok, first off, I'm not using a fan to cool my Pi! I want to use it in part of a musical instrument :-) I bought a cheap 5v 0.15A brushless fan which is the right physical size, but when connected to the +5v and ⏚ it doesn't spin fast enough. So, any tips on circuits, fans, and how to power them? Is ...
by edent
Sun May 31, 2015 5:44 pm
Forum: Beginners
Topic: NodeRED & GPIO on Pi v2
Replies: 3
Views: 1025

Re: NodeRED & GPIO on Pi v2

Sorry, I meant "the Git repository". I'm using 2.25 downloaded from the author's site.
by edent
Sun May 31, 2015 5:28 pm
Forum: Beginners
Topic: NodeRED & GPIO on Pi v2
Replies: 3
Views: 1025

NodeRED & GPIO on Pi v2

Evening all, I'm currently having real problems getting Node-RED to work with my GPIO pins on a v2 board. gpio -v gpio version: 2.20 Raspberry Pi Details: Type: Model B, Revision: 1, Memory: 256MB, Maker: Egoman That's clearly wrong! I've a rev 2 board with 40 Pins. I've installed the latest wiring-...
by edent
Fri Jun 13, 2014 12:02 pm
Forum: Python
Topic: openCV face detection compare faces
Replies: 1
Views: 2706

Re: openCV face detection compare faces

Did you manage to get anywhere with this? I'm trying to do the same thing.
by edent
Wed Jun 04, 2014 8:42 am
Forum: Beginners
Topic: git - permission denied
Replies: 1
Views: 2670

Re: git - permission denied

Well, I generated some new SSH keys for my Pi and added them to my GitHub account - as described on the Help Pages.

I can now clone again - which is nice.

Anyone know why it would suddenly fail?
by edent
Wed Jun 04, 2014 8:32 am
Forum: Beginners
Topic: git - permission denied
Replies: 1
Views: 2670

git - permission denied

Feel slightly silly posting this here... I successfully cloned two git repos onto my Pi. I deleted one of them. I went to clone a third, and I get the error Permission denied (publickey). fatal: The remote end hung up unexpectedly There seems to be lots of advice on the web about how to fix it - but...
by edent
Mon Jun 03, 2013 4:13 pm
Forum: Advanced users
Topic: Loading MPEG/VC1 Codec on the fly?
Replies: 1
Views: 734

Loading MPEG/VC1 Codec on the fly?

Is there any way to dynamically load / enable codec support?

Adding/removing it in config.txt and rebooting isn't quite what I had in mind. I'd like to be able to (quickly) show the performance difference between GPU and software rendering.
by edent
Mon Jun 03, 2013 4:07 pm
Forum: Advanced users
Topic: GSM modem that doesn't need a powered hub?
Replies: 2
Views: 1539

Re: GSM modem that doesn't need a powered hub?

I've found that keeping the dongle in 2G mode usually works. 3G just draws too much power. You can still attach to the 3G network and send / receive SMS without a powered hub. But as soon as you try to attach to data it will die. Theoretically, the closer you are to a mast the less power your dongle...
by edent
Thu Feb 14, 2013 1:04 pm
Forum: Scratch
Topic: MakeyMakey + Scratch + Pi
Replies: 2
Views: 2132

MakeyMakey + Scratch + Pi

Just got my MakeyMakey - it's a USB keyboard which you can plug in to real world objects. So I've used fruit and vegetables to send commands to Scratch!

Video at http://www.youtube.com/watch?v=bNSC5W1_6U4
Blog at http://shkspr.mobi/blog/2013/02/raspber ... interface/
by edent
Sun Nov 04, 2012 7:40 pm
Forum: General programming discussion
Topic: Using short stories to teach programming
Replies: 1
Views: 794

Using short stories to teach programming

I've started writing short stories to help teach kids Python programming.
The first one is at http://shkspr.mobi/blog/2012/11/the-pyt ... a-problem/

I'd love to know what people think, and if they'd be interested in writing more.

Enjoy!

T
by edent
Sun Oct 21, 2012 11:27 am
Forum: General discussion
Topic: working USB 3G/GPRS/EDGE modem
Replies: 24
Views: 77598

Re: working USB 3G/GPRS/EDGE modem

Thanks for your kind words. As far as I know, most USB dongles won't carry voice. Sorry.
by edent
Tue Jul 17, 2012 4:40 pm
Forum: General discussion
Topic: How strict is the power supply data
Replies: 23
Views: 8678

Re: How strict is the power supply data

One thing to say - take a look at the label printed on the charger. It should tell you what Voltage & Amperage it will pump out.

For example, I'm using a BlackBerry PlayBook charger - it's 5.0V @ 1.8A. Perfect :-)
by edent
Fri Jul 13, 2012 3:03 pm
Forum: Other projects
Topic: android / iphone mobile remote
Replies: 5
Views: 5888

Re: android / iphone mobile remote

There are two things you can do.
1) You can use SSH to control the Pi via command line.
2) You can install a VNC server on the Pi and a VNC client on your Android - that way you can control the GUI.
by edent
Fri Jul 13, 2012 12:26 pm
Forum: General discussion
Topic: Huawei E323 3G Dongle (3 network)
Replies: 7
Views: 8772

Re: Huawei E323 3G Dongle (3 network)

I've managed to get the E220 working to connect to the net. Try using Sakis http://www.sakis3g.org/

Here's the full details of how I did it
http://shkspr.mobi/blog/index.php/2012/ ... i-success/
by edent
Fri Jul 13, 2012 7:01 am
Forum: General discussion
Topic: 3G Dongle only connects for a few seconds (K3565)
Replies: 7
Views: 3209

Re: 3G Dongle only connects for a few seconds (K3565)

Powered hub did the trick! Will write it up this weekend.
by edent
Wed Jul 04, 2012 2:31 pm
Forum: General discussion
Topic: 3G Dongle only connects for a few seconds (K3565)
Replies: 7
Views: 3209

3G Dongle only connects for a few seconds (K3565)

I'm using a Huawei K3565 USB 3G dongle on my Pi. Using wvdial and sakis3g I can connect to my current provider (GiffGaff) for only a few seconds. For example, I can ping 3 - 4 times, or download approx 25,537 bytes. Then the modem disconnects. I don't think this is a power issue - I'm using a 1.2A c...
by edent
Mon Jul 02, 2012 10:05 am
Forum: Beginners
Topic: Maximum Current?
Replies: 2
Views: 993

Maximum Current?

I'm currently powering my Pi with 5V and 1.2Amps. Everything works fine - even with a 3G USB stick plugged in.

What's the maximum amperage I can use? I have a micro USB charger which is 1.8 amps, is that going to blow the board up?
by edent
Sun Jul 01, 2012 4:49 pm
Forum: Troubleshooting
Topic: USB 3G modem AT commands
Replies: 14
Views: 26576

Re: USB 3G modem AT commands

Ah, seems that my pppd didn't have the right permissions.

Code: Select all

chmod 755 /usr/sbin/pppd
Did the trick!

Will try with a fresh install to make sure that's what did it :-)
by edent
Sun Jul 01, 2012 3:35 pm
Forum: Troubleshooting
Topic: USB 3G modem AT commands
Replies: 14
Views: 26576

Re: USB 3G modem AT commands

I'm having real difficulty getting my 3G modem to connect. I can access the serial port etc without any trouble. I've installed and configured wvdial, but when I run it, this is the output. [email protected]:~$ sudo wvdial giffgaff --> WvDial: Internet dialer version 1.61 --> Initializing modem. --> Se...
by edent
Sun Jun 24, 2012 1:50 pm
Forum: Other projects
Topic: FrontlineSMS - 3G Dongle
Replies: 3
Views: 2335

Re: FrontlineSMS - 3G Dongle

alxndrsn wrote:Very cool! Is this FrontlineSMS 1 or 2?
This is FrontlineSMS v1.6 - version 2 is in beta. I have a copy, but haven't tried it yet. Maybe next weekend :-)
by edent
Sun Jun 24, 2012 12:01 pm
Forum: General discussion
Topic: MicroSD on future boards?
Replies: 4
Views: 1290

MicroSD on future boards?

Perhaps it's just me, but I had real difficulty finding a full sized SD card. I have loads of microSD cards - because that's what most phones take. In the end, I used an SD adapter - which juts out of the board quite far. So, my suggestion would be to use a micro SD port rather than the full version...
by edent
Sun Jun 24, 2012 9:24 am
Forum: Other projects
Topic: FrontlineSMS - 3G Dongle
Replies: 3
Views: 2335

FrontlineSMS - 3G Dongle

Hi, First time poster - only got my Pi on Friday :-) I've written a blog post about how to get FrontlineSMS running on the Raspberry Pi - http://shkspr.mobi/blog/index.php/2012/06/raspberry-pi-and-frontline-sms/ FrontlineSMS is a great piece of software for sending and receiving SMS - well worth che...
by edent
Thu Sep 08, 2011 4:53 pm
Forum: General discussion
Topic: Image Processing Speed
Replies: 1
Views: 1343

Re: Image Processing Speed

<t>Just wondering what the likely speed was for image analysis.<br/> <br/> Seeing the 1080p output is great - but if I want to make the 'pi into a security system, or greenscreen, or kinnect-esque device, it would be interesting to know what the expected performance was likely to be.<br/> <br/> (Cou...

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