Go to advanced search

by KiltedPi
Sun Jun 30, 2013 6:20 pm
Forum: C/C++
Topic: Max31855 Thermistor - C code to convert bits to decimal
Replies: 4
Views: 1917

Re: Max31855 Thermistor - C code to convert bits to decimal

and in twos complement representation Bakul Shah, I'm not sure I understand how this works? You mean theres no actual system of conversion that makes sense here? How can each bit represent 0.25 degrees, when a second bit indicates a unique value? I know how to print in dec/hex etc, but the conversi...
by KiltedPi
Sun Jun 30, 2013 4:00 pm
Forum: C/C++
Topic: Max31855 Thermistor - C code to convert bits to decimal
Replies: 4
Views: 1917

Max31855 Thermistor - C code to convert bits to decimal

The following link is taken from a datasheet for the Maxim31855 Thermistor (I've soldered it to the GPIO of my pi in accordance with the SPI interface, CEO, MISO etc) http://i679.photobucket.com/albums/vv158/NightsBane666/BLOODYANNOYINGBITOPERATION_zpsa086671a.png Apparently, the first bit denotes s...
by KiltedPi
Fri Mar 15, 2013 12:53 am
Forum: General discussion
Topic: Cadsoft Eagle - Printing LED test circuit magpi issue 2
Replies: 11
Views: 3035

Re: Cadsoft Eagle - Printing LED test circuit magpi issue 2

The circuit is fine incidentally, I have tested it out on a bit of breadboard and everything. (It is identical to the one created in issue 2 of the magpi magazine, the section on interfacing for beginners)
by KiltedPi
Fri Mar 15, 2013 12:52 am
Forum: General discussion
Topic: Cadsoft Eagle - Printing LED test circuit magpi issue 2
Replies: 11
Views: 3035

Re: Cadsoft Eagle - Printing LED test circuit magpi issue 2

AH! So a panel is just a 'sheet' of my selected PCB. Sweet. I've sent away for 6 of these chaps I've made up to be quoted. Thanks for the link to that switch library too. I wasn't sure of the format you see with relation to "through-put' or whatever it was talking about with regards to dimensions. I...
by KiltedPi
Fri Mar 15, 2013 12:41 am
Forum: General programming discussion
Topic: Begginer
Replies: 8
Views: 1830

Re: Begginer

Skiddoobond: my experience with kids, is that they crave instant gratification. Which you have got to admit is hard with javascript/java. Html coding although instant and graphical in nature- it is far too simple and lacks the essential components such as loops, if/else, object orientation etc... It...
by KiltedPi
Fri Mar 08, 2013 9:59 pm
Forum: General programming discussion
Topic: Begginer
Replies: 8
Views: 1830

Re: Begginer

When you start out programming in Python, start with a single module (A module is a library of cool stuff you can do in your code, so "pyGame" is an example of a library with alot of code relevant to displaying and moving images as 2D sprites) My personal recommendation is to start small. Python wit...
by KiltedPi
Fri Mar 08, 2013 9:37 pm
Forum: General programming discussion
Topic: Begginer
Replies: 8
Views: 1830

Re: Begginer

Hey Peb, 14/16 yrs old is definately too old for "Scratch" - so rule that out. What you should learn is the programming language "Python". Not having a live teacher/lecturer is a hurdle we all face. There are three ways ultimately to get your programming problems solved- Using a chat room, such as t...
by KiltedPi
Fri Mar 08, 2013 8:11 pm
Forum: General discussion
Topic: Cadsoft Eagle - Printing LED test circuit magpi issue 2
Replies: 11
Views: 3035

Re: Cadsoft Eagle - Printing LED test circuit magpi issue 2

Thanks a bunch techpaul, I wonder if I can bother you about one more thing- I'm going to go with the D6C90F1LFS switch you recommended, and I know the information for what I need in the eagle library is in the datasheet somewhere- could you help me find where? I see the dimensions, but I don't under...
by KiltedPi
Wed Mar 06, 2013 11:02 pm
Forum: General discussion
Topic: Cadsoft Eagle - Printing LED test circuit magpi issue 2
Replies: 11
Views: 3035

Re: Cadsoft Eagle - Printing LED test circuit magpi issue 2

Thanks for the helpful responses guys! techpaul: those libraries are great and are exactly what I'm looking for- I'll browse them in a moment for a suitable 'push to make' switch- that part should be easy enough!- the one thing I'm not sure of, is what kind of 1-pin connector is suitable for the out...
by KiltedPi
Wed Mar 06, 2013 8:41 am
Forum: General discussion
Topic: Cadsoft Eagle - Printing LED test circuit magpi issue 2
Replies: 11
Views: 3035

Re: Cadsoft Eagle - Printing LED test circuit magpi issue 2

Thanks for the response Richard, but I'm looking to print not just a few of these off, but to see how I get on with manufactured PCB's. I've a working example in veroboard and it works fine (If it doesn't look a bit 'frankensteins monster'), but getting to grips with Eagle is the next step, and as I...
by KiltedPi
Wed Mar 06, 2013 12:47 am
Forum: General discussion
Topic: Cadsoft Eagle - Printing LED test circuit magpi issue 2
Replies: 11
Views: 3035

Cadsoft Eagle - Printing LED test circuit magpi issue 2

I'm a decent software programmer, but have only ever picked up a soldering iron once or twice in my life. For me, I'm tasting RaspberryPi to try and learn how to interface with my own homemade circuits- as well as integrated circuits (Something I just couldn't accomplish safely on my £500 laptop!), ...
by KiltedPi
Mon Feb 04, 2013 8:39 pm
Forum: For sale
Topic: Solar Panel & Battery Boxes
Replies: 33
Views: 33360

Re: Solar Panel & Battery Boxes

I live in Scotland. Whats the 'sun'?
by KiltedPi
Mon Feb 04, 2013 8:34 pm
Forum: General discussion
Topic: How to get started
Replies: 15
Views: 1976

Re: How to get started

Hey Jake! I would think about maybe making a list of 'things to do'. Ask your parent/guardian for a white board to stick on your wall and help you organise what you are going to do? First thing is first tho- Get your raspberry pi working! on your telly (Don't worry you won't break your TV) or on ano...
by KiltedPi
Mon Feb 04, 2013 8:30 pm
Forum: General discussion
Topic: 512meg
Replies: 3
Views: 713

Re: 512meg

An IRC client won't require much processor at all. How you managed to make a Pi slow using it as an IRC client, I have no idea!- Just use a model A.
by KiltedPi
Thu Jan 17, 2013 10:18 pm
Forum: Networking and servers
Topic: Connecting Wordpress to GPIO
Replies: 3
Views: 1297

Re: Connecting Wordpress to GPIO

When you say:
1) Have the C code write some OS environment variables which Wordpress can pick up somehow (PHP?)
I would do it that way since its more secure.

I'd write BASH scripts that would write to an SQL database from my Pi-side. Dunno how to do the web dev tho.
by KiltedPi
Thu Jan 17, 2013 7:01 pm
Forum: Python
Topic: Negativ output on GPIO's
Replies: 22
Views: 3898

Re: Negativ output on GPIO's

I would agree that if you have tried re-installing whatever linux distro you are using and on a different SD card, then the problem is not hardware, nor electronics. Its nice to see so many electronics people chiming in to help here! As I know very little about electronics and it gives me hope for m...
by KiltedPi
Wed Jan 02, 2013 1:53 am
Forum: Automation, sensing and robotics
Topic: "Wild life meets Electronics project" - Sourcing USB Cam's
Replies: 9
Views: 2669

Re: "Wild life meets Electronics project" - Sourcing USB Cam

We'll be working exclusively with the pi though, and not an Arduino or even a breadboard for the circuits.
by KiltedPi
Wed Jan 02, 2013 1:43 am
Forum: Automation, sensing and robotics
Topic: "Wild life meets Electronics project" - Sourcing USB Cam's
Replies: 9
Views: 2669

Re: "Wild life meets Electronics project" - Sourcing USB Cam

I'd need to include removing the IR filter in the youth groups risk assessment, but its a pretty low risk I think. Anyway, aonsquared, I've noted your details, okay if I private message you a few things (When the time comes) about how you achieved interfacing with the camera? I can code in python ju...
by KiltedPi
Mon Dec 31, 2012 4:47 pm
Forum: General discussion
Topic: Check this circuit?
Replies: 31
Views: 3272

Re: Check this circuit?

I'd prefer not to use a breadboard with my RaspberryPi. I can see the pro's and con's of using them, and for my youth project, I would prefer to teach them the electronics without. I'd like them to really get stuck into the 'guts' of the electronics. My experience is almost exclusively with software...
by KiltedPi
Mon Dec 31, 2012 4:23 pm
Forum: General programming discussion
Topic: Where do I start? What Language? What program? Everything?
Replies: 7
Views: 47861

Re: Where do I start? What Language? What program? Everythin

It depends on your needs what to start with, if you are 12+ I would recommend "PyGame". You will want to start with something like this, because the ability to 'see' the results of your programming can help ease the frustration involved with debugging code which can put you off programming forever! ...
by KiltedPi
Mon Dec 31, 2012 4:09 pm
Forum: Automation, sensing and robotics
Topic: "Wild life meets Electronics project" - Sourcing USB Cam's
Replies: 9
Views: 2669

Re: "Wild life meets Electronics project" - Sourcing USB Cam

Thats fantastic news! Yeah, I wasn't aware of a camera that can hook into the GPIO header, but its on the cards after xmas sometime ! Fantastic. I imagine it will take a while to run through the basics, I've got the motion sensors, scutter and LED light test to run through with them first of all - I...
by KiltedPi
Sun Dec 30, 2012 2:00 am
Forum: General discussion
Topic: Database of Pi projects
Replies: 4
Views: 3652

Re: Database of Pi projects

A 'Codebin' would be great.
by KiltedPi
Sun Dec 30, 2012 1:57 am
Forum: Automation, sensing and robotics
Topic: "Wild life meets Electronics project" - Sourcing USB Cam's
Replies: 9
Views: 2669

"Wild life meets Electronics project" - Sourcing USB Cam's

Background: Computer Networking : CCNA, MSCITP, Software Development ----------------------- Wasn't sure were to post this: I'm looking for a few 'night vision', 'outdoor webcam's/USB cameras' for my youth project so I can wirelessly hook them into a RaspberryPi. I don't know how easy it is going t...
by KiltedPi
Sat Dec 29, 2012 9:39 pm
Forum: Other projects
Topic: Discuss The MagPi - Issue 03 July 2012
Replies: 2
Views: 2149

Re: Discuss The MagPi - Issue 03 July 2012

I'd like to thank Meltwater for the ingenious idea of having the kid I'm trying to get excited about electronics start off by building a lego housing for his Pi. The idea that the device is 'theirs' is essential, because you might find yourself taking it off them to examine it now and then, and it n...
by KiltedPi
Sat Dec 29, 2012 9:02 pm
Forum: General discussion
Topic: Can someone help me with my project??
Replies: 11
Views: 2362

Re: Can someone help me with my project??

What I've detailed basically just deals with the networking portion of the problem. Another problem you will have to face is the electronics behind it. I'm not familiar with cameras, but a motion sensor can be got reasonably cheap I imagine from maplin electronics, some are even equipped with thermi...

Go to advanced search