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Topic: Raspberry Pi launch farce (Read 21 times) previous topic - next topic

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It may be very useful for situations like where you want to make a network printer box,


If I could get my hands on one . . . . .

Grumpy_Mike

They are on three weeks delivery at Farnell.

pluggy

Don't judge linux by your experience with the Pi, GM.  Besides the realtime issue, which isn't really an issue once you accept its a multitasking OS (although putting GPIO on it lends itself to needing realtime), Linux on the Pi and Linux on half decent hardware are two entirely unrelated animals.  I use it full time, although my distro of choice is Ubuntu, Debian is close enough so the differences on the Pi aren't great. The Pi sucks because of the severe compromises made to get the price down in my opinion.  You're right, it is stone soup.  The choice of power supply is the root of a lot of the problems.  Charging a smart phone battery is a whole different animal to running a desktop computer, factor in the polyfuses (needed to stop it overloading said PSU and wiring) and the poor USB/ethernet implementation and the whole thing becomes a pain.  Its lack of grunt is sometimes a problem but I'll leave that bit alone.

I have now a rock solid Pi, (attacking said polyfuses with a soldering iron and feeding it power via the GPIO pins got rid of many of the problems I was having) , but I still can't get it to play nicely with any of my webcams (all of which are plug and play on my PC and Ubuntu) and using workarounds for talking to an Arduino is a pain.  I've just ordered a 'works out of the box' webcam as a last ditch attempt to get it to do what I want, we'll see on that front.

I'd take Linux over OSX anyday but I haven't really used a Mac in earnest since Tiger. 


retrolefty


Projects where the Pi is useful are things where you have data to gather ( slow data ) and you want to graphically display it. It is a small sub set of all possible projects.
Something like a home security web based system sending web cam data over the net.

In my wand project
http://www.thebox.myzen.co.uk/Raspberry/Magic_Wand.html
I minimised the disruptive effects of Linux by using a hardware time to generate the delays. The program spends most of it's time in these and so is not affected unless the time is stolen just close to the very end.
This picture is one of the "out takes" from that project and illustrates the point. In actual practice you don't notice this very much but it can be captured in photos.



Cool project Mike. Now you just need to add a stepper motor to drive the wand as your old and shaky hands are not showing off the display in it's best light (pun!)  ;)

Lefty

Grumpy_Mike

Quote
as your old and shaky hands are not showing off the display in it's best light


Yes and I put my shoulder out developing it.  :smiley-yell:

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