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by Bashster
Tue Mar 05, 2013 7:51 pm
Forum: HATs and other add-ons
Topic: DC motor
Replies: 12
Views: 10686

Re: DC motor

About the only thing I'd be prepared to connect directly to a GPIO pin is an LED with current-limiting resistor in series. Anything else I'd only connect via a suitable buffer. Especially any device which is inductive (has a coil in it somewhere) such as a motor or a solenoid I wouldn't dream of dir...
by Bashster
Tue Mar 05, 2013 7:16 pm
Forum: General discussion
Topic: External USB Hubs
Replies: 7
Views: 1725

External USB Hubs

Hi all, My Pi comes with 2 usb outlets which I use for the keyboard and the mouse. But I now need to get the wireless up and running for which I plan to use one of the many usb cards I've accumulated over the years. This obviously requires an extra usb connection, so I hooked up a powered 4-port hub...
by Bashster
Mon Feb 18, 2013 10:29 pm
Forum: Raspbian
Topic: Pruning Raspbian
Replies: 4
Views: 778

Re: Pruning Raspbian

The first link you posted looks very interesting; many thanks indeed....
by Bashster
Mon Feb 18, 2013 8:35 pm
Forum: Raspbian
Topic: Pruning Raspbian
Replies: 4
Views: 778

Pruning Raspbian

Hi all,

Raspbian has a lot of stuff on it I don't need, like X, for example (and just about all the apps if the truth be known). I'd like to uninstall the unwanted stuff but don't want to break anything in the process. How might one go about this without wrecking the system?

Thanks,
B.
by Bashster
Thu Feb 07, 2013 10:51 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Broken Pi or no?
Replies: 8
Views: 982

Re: Broken Pi or no?

How are you accessing the I/O pins? AFAIK, there's no in-built support for interfacing with the GPIO pins from Wheezy alone. You have to download and install some additional software before the pins become accessible. That's what I've had to do, anyway....
by Bashster
Sun Jan 27, 2013 5:40 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

Sorry, I said Ubuntu but meant Debian (anything Deb derived that uses apt-get basically). Anyway, yeah, it's a pain, but I think from what you say the best thing I can do is scrub the Arch installation and download Raspian instead. Pity as I really liked the command-line only nature of the Arch for ...
by Bashster
Sun Jan 27, 2013 4:53 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

Gordon, I believe the problem seems to lie in the fact that I'm using ArchARM and your ic2 libraries are stored in Ubuntu repositories, so the directions on your page don't work for Arch's pacman package manager. It's when I try to install the ic2 libraries using pacman that the problem arises. Any ...
by Bashster
Sun Jan 27, 2013 11:38 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Question On Wiring Buttons To GPIO Pins
Replies: 4
Views: 3009

Re: Question On Wiring Buttons To GPIO Pins

The Pi's available power out from its GPIO pins isn't going to be that great, so if you are making heavy use of it, it would be a good idea to minimise the load on it. Two ways to do this. Firstly, use a breakout board with its own separate power supply (preferred solution IMO) or else you could exp...
by Bashster
Sat Jan 26, 2013 10:46 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

Gordon, this page of yours: https://projects.drogon.net/raspberry-p ... c-library/

refers to the i2c library which apparently no longer exists. Trying to install it just generates a 'target not found' error. Will your WiringPi still work without it?
by Bashster
Tue Jan 22, 2013 11:54 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

In fact on reflection, I don't think I'll use the Pi's 3v3 and 5v power output pins at all , in the interests of optimum stability all round. I've got a bunch of L7805CV voltage regs which provide 5V as standard at 1A (with a hs) and can be configured with a handful of external components to adjust ...
by Bashster
Tue Jan 22, 2013 11:46 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pi compatible RTC
Replies: 1
Views: 599

Pi compatible RTC

HI all,

Is there a real time clock available from Farnell or Maplin which you can hook into the Pi without any additional drivers or other issues arising/being necessary?
by Bashster
Sun Jan 20, 2013 11:31 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

Will do, Gordon. Cheers for the steers.
by Bashster
Sun Jan 20, 2013 10:10 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

Thanks, guys. Well, I've got plenty of 7404 hex inverters lying around which ought to be just the job for converting 3,3v up to 5v., which the external CMOS circuitry I have planned requires. Two of the gates from these chips in series so the phase remains correct. Can't see any problem with that. L...
by Bashster
Sun Jan 20, 2013 2:35 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

Thanks, Gordon. Looks promising. I see some people have reported that they've trashed their Pis by inappropriate use of signals to/from the GPIO pins (not using your tool, I mean generally). I just wondered if there are any golden rules one should bear in mind when messing with these pins to prevent...
by Bashster
Sat Jan 19, 2013 7:10 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Re: Accessing I/O pins

Great stuff; many thanks indeed for the pointer.
by Bashster
Sat Jan 19, 2013 3:05 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing I/O pins
Replies: 18
Views: 11482

Accessing I/O pins

Hi everyone, So I've got my Pi and have loaded it up with the cut-down version of Arch with no gui; just a command line. I want to use this Pi as a controller for a programmable time delay lock which will open at certain pre-determined times. I'd prefer to do this in C rather than Bash on balance, b...

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