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by squarepie
Mon Dec 30, 2013 9:00 pm
Forum: General discussion
Topic: Low Power WiFi...
Replies: 8
Views: 3133

Re: Low Power WiFi...

WiFi adapters generally consume lots of power. If you want to power a pi and WiFi using solar then you will need (for 24/7 uptime and in a country like the UK) a 100Ah battery and a 100W solar panel. It's pricey. I've had to switch my plans to using an atmel chip to conserve power.
by squarepie
Sat Dec 28, 2013 9:05 pm
Forum: General discussion
Topic: Amazon Basic keyboard layout
Replies: 19
Views: 4040

Re: Amazon Basic keyboard layout

[ Why can't everybody just type American? Because people are used to the keyboard layouts of their own country.The world does not revolve around America or any other country for that matter. As for the original question, put up with it. I and many others have to when using QBASIC and GWBASIC as the...
by squarepie
Wed Dec 11, 2013 4:01 pm
Forum: General discussion
Topic: Cheap Printer for Raspberry Pi
Replies: 4
Views: 1477

Re: Cheap Printer for Raspberry Pi

I think what you're talking about is a thermal printer.
There's one here https://www.sparkfun.com/products/10438
There are loads of tutorials on how to use them, try googling it.
by squarepie
Mon Dec 09, 2013 6:46 pm
Forum: General discussion
Topic: Outdoor power
Replies: 22
Views: 7752

Re: Outdoor power

With that in mind you now need batteries twice the size which pushes the £30 budget even further out of reality. I don't want to dampen the enthusiasm of the discussion I just wanted to let the OP know his budget is way too low to allow a solution. I can see your point about my original £30 budget ...
by squarepie
Sun Dec 08, 2013 10:09 pm
Forum: General discussion
Topic: Outdoor power
Replies: 22
Views: 7752

Re: Outdoor power

Tage wrote:my gut feeling is that you need about 60W panel and a 100Ah 12V deep discharge battery to run the Pi continuously year around.
Could I wire two 30w panels together to achieve this? Also would this be able to cope with limited sunlight? E.g if there was a particularly cloudy day?
by squarepie
Sun Dec 08, 2013 10:42 am
Forum: General discussion
Topic: Outdoor power
Replies: 22
Views: 7752

Re: Outdoor power

How about this solar panel http://uk.rs-online.com/web/p/battery-c ... r/7067918/ ? I could attach it to a standard 12v car battery and I think it has a high enough rating to power the pi.
by squarepie
Sat Dec 07, 2013 10:54 pm
Forum: General discussion
Topic: Outdoor power
Replies: 22
Views: 7752

Re: Outdoor power

you could use a solar panel to charge a 12V SLA battery, and power your Pi from that battery using a USB charger adapter. the problem is the cost of the solar panel and the fact that the Pi draws more power than the panel and battery can provide. So you need to keep the Pi shut off most of the time...
by squarepie
Sat Dec 07, 2013 9:52 pm
Forum: General discussion
Topic: Outdoor power
Replies: 22
Views: 7752

Outdoor power

For my weather station project, I need to house my model B pi outside. I have no viable means of running cables outside, I'm going to use a WiFi adapter to communicate with my web server. The problem I have come across is that I need a cheap, waterproof of powering a model B pi with a WiFi adapter 2...
by squarepie
Thu Sep 26, 2013 7:31 pm
Forum: General discussion
Topic: Wireless communication between two pi's
Replies: 1
Views: 10142

Wireless communication between two pi's

I need an easy, relatively cheap method of communicating between a model A pi and a rev 2 B pi. I want to be able to transmit strings in both directions. Also as I'm a novice in this area, I want to be able to use python as the language. Does anybody know a good way of doing this?
by squarepie
Mon Jun 17, 2013 5:17 pm
Forum: General discussion
Topic: One Wire
Replies: 6
Views: 869

Re: One Wire

I've used similar tutorials and it worked fine. I'd suggest checking and re-checking the wiring. Have you got the pullup resistor value correct, and is it across the right pair of pins? Note that the GPIO pin for 1-wire support that Adafruit refer to as #4 is physically pin 7 on the RPi - might be ...
by squarepie
Sun Jun 16, 2013 4:51 pm
Forum: General discussion
Topic: One Wire
Replies: 6
Views: 869

Re: One Wire

pluggy wrote:I think it only works with Raspdian.
I tryed it with raspbian before i downloaded occidentalis and I got exactly the same result.
by squarepie
Sun Jun 16, 2013 9:44 am
Forum: General discussion
Topic: One Wire
Replies: 6
Views: 869

One Wire

I've been following Adafruit's tutorial for the DS18B20 temperature sensor. I wired it according to the tutorial and issued the following commands to the terminal : sudo modprobe w1-gpio sudo modprobe w1-therm cd /sys/bus/w1/devices ls At this point the tutorial says that my sensor should appear as ...
by squarepie
Mon Apr 08, 2013 9:18 pm
Forum: General discussion
Topic: pi specs, like keyboard etc...
Replies: 4
Views: 2233

Re: pi specs, like keyboard etc...

i am new to RPi , my uncle gifted me it. kk. i) i have microsoft wireless desktop 2000 ii) a VGA monitor (can i use hdmi to vga convertor).or (hdmi to dvi and connect it to dvi to vga convertor and plug it to monitor) iii) can i use pendrives with Rpi iv) the memory card to be used should be only S...
by squarepie
Mon Apr 08, 2013 8:50 pm
Forum: General discussion
Topic: HELP MY PI WONT WORK
Replies: 11
Views: 1621

Re: HELP MY PI WONT WORK

Ok i got my Pi today....Put it in the Case Put the Raspberry OS on my Nintendo 8GB SD Card....And so far All i get is a Red Light and a Orange Light when i turn on the Pi and it wont recognize the HDMI became my TV Aint picking up a Signal From the Pi to through the HDMI Since it wont let me change...
by squarepie
Mon Apr 08, 2013 6:43 pm
Forum: General discussion
Topic: HELP MY PI WONT WORK
Replies: 11
Views: 1621

Re: HELP MY PI WONT WORK

Ok i got my Pi today....Put it in the Case Put the Raspberry OS on my Nintendo 8GB SD Card....And so far All i get is a Red Light and a Orange Light when i turn on the Pi and it wont recognize the HDMI becaue my TV Aint picking up a Signal From the Pi to through the HDMI Since it wont let me change...
by squarepie
Sat Apr 06, 2013 7:41 pm
Forum: General discussion
Topic: HELP MY PI WONT WORK
Replies: 11
Views: 1621

Re: HELP MY PI WONT WORK

Right , firstly you should have searched the forum and the wiki before posting. You're probably lucky if anyone else replies to you. Now actually switch to the hdmi channel on your tv. I can't be bothered to say anymore , I have better things to do.
by squarepie
Fri Apr 05, 2013 4:47 pm
Forum: Troubleshooting
Topic: Farnell Power Supply MWUSBUK1 - Beware!!!!
Replies: 9
Views: 1537

Re: Farnell Power Supply MWUSBUK1 - Beware!!!!

I use that adapter to charge my phone. I tested it with my pi and tp1 to tp2 was stable around 4.96v lowest 4.87. Hope this helps!
by squarepie
Fri Apr 05, 2013 4:42 pm
Forum: General discussion
Topic: refresh midori from console
Replies: 2
Views: 1612

Re: refresh midori from console

What python module are you using to launch midori? Please show your code in full ( from the shebang line to the termination line ).
by squarepie
Tue Apr 02, 2013 6:05 pm
Forum: General discussion
Topic: GPIO Woes
Replies: 7
Views: 936

Re: GPIO Woes

Edit: Never mind, I found the answer in a post on another site! You have manually installed RPi.GPIO version 0.2.0. This is an ancient version that is not aware of revision 2 of the RPi, hence your problem. To remove it: sudo rm -rf /usr/local/lib/python2.7/dist-packages/RPi.GPIO* After you have don...
by squarepie
Tue Apr 02, 2013 5:04 pm
Forum: General discussion
Topic: GPIO Woes
Replies: 7
Views: 936

Re: GPIO Woes

[quote=croston]Looks like you are using a really ancient version of RPi.GPIO - so old it pre-dates revision 2 boards. I suggest you upgrade Raspbian with the following: CODE: SELECT ALL $ sudo apt-get update $ sudo apt-get dist-upgrade You will also find out that RPi.GPIO has changed. For the latest...
by squarepie
Mon Apr 01, 2013 6:00 pm
Forum: General discussion
Topic: GPIO Woes
Replies: 7
Views: 936

Re: GPIO Woes

joan wrote:Pin 13 changed from gpio21 to gpio27 between the hardware revisions from model 1 to 2.
I didn't know that, but in the code i've used the pin numbers from the board.
Should I be using the gpio numbers instead of the board numbers?
by squarepie
Mon Apr 01, 2013 5:42 pm
Forum: General discussion
Topic: GPIO Woes
Replies: 7
Views: 936

GPIO Woes

I have recently been experimenting with the GPIO port on my Pi. I've attached three leds to pins 11 (GPIO Pin 17), 13 (GPIO Pin 21), and 22 (GPIO Pin 22). I've been trying to get them to flash in a sequence using this code : import RPi.GPIO as g import time g.o = g.output g.setup(11,g.OUT) g.setup(1...
by squarepie
Fri Mar 22, 2013 10:39 pm
Forum: General discussion
Topic: Getting rid of startup password page and auto start
Replies: 7
Views: 1368

Re: Getting rid of startup password page and auto start

If the pi boots straight to xwindows then there is no password prompt. Else you have to enter the username and password. Also if you are using the pi to play sounds at startup, you would probably need at least a custom shell script and software. My advice is to find an alternative to the pi for doin...
by squarepie
Fri Mar 22, 2013 4:23 pm
Forum: General discussion
Topic: temperature sensor
Replies: 4
Views: 754

Re: temperature sensor

I'm pretty sure that the CPU has one built in. Most modern devices do and the CPU was designed for mobile phones, set top boxes, etc.
by squarepie
Wed Mar 20, 2013 3:53 pm
Forum: General discussion
Topic: Thanks button (or +1) for useful posts
Replies: 24
Views: 3015

Re: Thanks button (or +1) for useful posts

Personally, I think posts are a better alternative. It quantifies the sentiment. "+1" buttons ignore the 'silent majority' and introduce an element of fanaticism and "gaming" of the system. For example, you may 'like' a facebook page in exchange for something (barter) rather than because you actual...

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