#raspberrypi IRC Log

Index

IRC Log for 2011-12-22

Timestamps are in GMT/BST.

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[5:57] * kcj (~casey@unaffiliated/kcj1993) Quit (Ping timeout: 248 seconds)
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[6:32] * UnderSampled (~UnderSamp@cpe-174-097-224-028.nc.res.rr.com) Quit (Read error: Connection reset by peer)
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[12:08] * genbattle (~quassel@118-93-212-10.dsl.dyn.ihug.co.nz) Quit (Remote host closed the connection)
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[13:05] * chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) has joined #raspberrypi
[14:07] * IT_Sean (~sean@applefritter/IRCStaff/UltimateMacUser1) has joined #raspberrypi
[14:07] <PiBot> IT_Sean| Well hello Sean. How are you today?
[14:07] <IT_Sean> Gooood morning :)
[14:15] <IT_Sean> am i the only one that gets irritated by the "This USB device could perform faster if plugged into a USB 2.0 port" message that Windows XP shows, even if there are no USB 2 ports on the PC?
[14:47] <IT_Sean> it is far too quiet in here.
[14:47] * IT_Sean sets something on fire
[14:52] <datagutt> hey
[14:52] <datagutt> My hair is burning!
[14:55] <weuxel> IT_Sean: I did not know about this message, as there is no Windows Box at my disposal.
[15:03] * cosh (~cosh@gateway/tor-sasl/ryld) Quit (Quit: WeeChat 0.3.5)
[15:14] * ReggieUK (ReggieUK@5ac9ad1f.bb.sky.com) has joined #raspberrypi
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[16:27] * UnderSampled1 (~UnderSamp@cpe-174-097-224-028.nc.res.rr.com) has joined #raspberrypi
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[16:36] * rodrigo_golive (~quassel@189.2.128.130) Quit (Ping timeout: 240 seconds)
[16:51] <IT_Sean> weuxel: i work in a win only office, sadly
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[17:07] * maahes1 is now known as maahes
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[17:29] * WASDx (~AINOR@81-229-79-162-no64.business.telia.com) has joined #raspberrypi
[17:29] <WASDx> hello everyone
[17:30] <WASDx> I didnt find this channel anywhere on the site so i guessed it was #raspberrypi and i was correct :P
[17:30] <IT_Sean> We are unofficial
[17:30] <Thorn__> yet mentioned on the site
[17:30] <Thorn__> well, forum
[17:30] <Thorn__> (possibly the wiki too? not sure )
[17:31] <Thorn__> why has my tail grown
[17:31] <Thorn__> i am no furry
[17:31] * Thorn__ is now known as Thorn_
[17:31] <WASDx> I'm wondering if the RPi can use GPIO to control floppys and play music like this: http://www.youtube.com/watch?v=yHJOz_y9rZE
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[18:31] <WASDx> anyone here?
[18:31] <WASDx> a lot of people online
[18:33] <UnderSampled1> WASDx: hi
[18:34] <WASDx> Can you do this with the RPi? http://www.youtube.com/watch?v=yHJOz_y9rZE
[18:34] <WASDx> control floppy drives, to play music
[18:34] <UnderSampled1> WASDx: you may need more than just gpio to control the stepper motors in a floppy drive
[18:35] <WASDx> ok
[18:35] <UnderSampled1> but the gertboard may be able to do it
[18:35] <UnderSampled1> otherwise, there are other stepper motor drivers that could easily be controllable from the gpio
[18:35] <WASDx> I would like to use old hardware that i have, like a printer or floppy
[18:36] <UnderSampled1> WASDx: I just realized that the floppy drive would have the motor controller in it
[18:36] <UnderSampled1> so you should be able to do it from the gpio without much else
[18:36] <WASDx> great :D
[18:37] <UnderSampled1> though I don't know what voltage they run it--it may need to have a logic level converter
[18:38] <WASDx> i don't know all those hardware terms :/
[18:38] <WASDx> I guess i can control a simply light diode?
[18:38] <UnderSampled1> an LED?
[18:38] <WASDx> yes
[18:38] <UnderSampled1> you should be able to--you may need a resistor to protect the rPi
[18:39] <UnderSampled1> I don't know what it's rated for
[18:39] <WASDx> so it depends on the led?
[18:39] <WASDx> i know what a resistor is :D
[18:39] <UnderSampled1> but, the floppy drive uses 5 volt logic levels (the signal has zero volts for a logical zero, and 5 volts for a logical high)
[18:39] <WASDx> that I am aware of
[18:39] <UnderSampled1> and the raspberry pi uses 3.3 volts
[18:39] <WASDx> oh
[18:39] <WASDx> for gpio?
[18:39] <UnderSampled1> yes
[18:40] <UnderSampled1> so basically you would need one of these: http://www.sparkfun.com/products/8745
[18:40] <UnderSampled1> or you could make your own following the schematic
[18:41] <WASDx> thanks
[18:41] <UnderSampled1> although
[18:41] <UnderSampled1> since you probably don't need any input from the floppy drive into the raspberry
[18:42] <WASDx> electronics is not really my thing, luckily i have a teacher in school i can ask stuff about
[18:42] <UnderSampled1> there would be no danger in trying the 3volts directly
[18:42] <UnderSampled1> the worst that should happen would be the floppy drive not noticing your signal
[18:42] <WASDx> I'm sure someone else will try it before me and i can follow them
[18:43] <WASDx> I've been intending to use my RPi as a server but i recently became interested in the GPIO stuff
[18:44] <WASDx> do regular motherboards have GPIO?
[18:44] <UnderSampled1> sort of
[18:44] <UnderSampled1> it's normally called the parallel printer port
[18:44] <UnderSampled1> but they're becoming more and more rare
[18:44] <UnderSampled1> most people use an arduino if they want to use gpio
[18:45] <WASDx> I have a 10 year old motherboard available
[18:45] <UnderSampled1> that would work fine
[18:45] <WASDx> is arduino a microcontroller?
[18:45] <UnderSampled1> yes
[18:45] <WASDx> can the RPi be considered a microcontroller?
[18:45] <UnderSampled1> sort of
[18:45] <UnderSampled1> but not quite
[18:46] <UnderSampled1> the memory is separate from the processor
[18:46] <WASDx> no major difference then
[18:46] <WASDx> it can be used as one
[18:46] <IT_Sean> the raspi is more a computer then microsontroller
[18:46] <IT_Sean> *microcontroller
[18:46] <UnderSampled1> a microcontroller is a whole (very small) computer in a one chip package
[18:47] <UnderSampled1> and often has other features
[18:47] <UnderSampled1> like analogue input and output
[18:47] <UnderSampled1> but that's what the gertboard adds
[18:47] <ReggieUK> but the chip on the rpi is very much like an extended microcontroller
[18:47] <WASDx> sounds good
[18:48] <UnderSampled1> now, one difference is that a microcontroller can be obtained for less than a dollar
[18:48] <ReggieUK> it does everything that a uC does but has more bells and whistles on it
[18:51] <WASDx> Any fun suggestions for GPIO usages? I can only think of floppy music and leds
[18:51] <UnderSampled1> one of the smallest microcontrollers you can get (though probably not enough memory to play much of a song): http://www.atmel.com/pressroom/photos/ATtiny.jpg
[18:52] <IT_Sean> controlling stepper motors?
[18:52] <IT_Sean> you can do loads with GPIO
[18:52] <IT_Sean> reading sensors.
[18:52] <UnderSampled1> WASDx: there's a whole industry that uses them
[18:52] <UnderSampled1> or, industries
[18:52] <WASDx> I'm sure there are loads to do, but i'm new and can't come up with much myself
[18:53] <WASDx> motors sounds fun :)
[18:53] <UnderSampled1> WASDx: you could use it to connect old video-game controllers to the rPi
[18:54] <WASDx> that would be great
[18:54] <WASDx> i have NES controllers
[18:55] <WASDx> i have two old motors for RC cards that i guess i can play with too

These logs were automatically created by RaspberryPiBot on irc.freenode.net using the Java IRC LogBot.