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by Ravenous
Fri Feb 13, 2015 2:02 pm
Forum: Off topic discussion
Topic: Topic Subject
Replies: 7
Views: 985

Re: Topic Subject

Oh... I didn't find any "rude" versions when I searched... just "First World Problem", which I'm sure is what you meant! (I'm gonna have to start using that from now on.)
by Ravenous
Fri Feb 13, 2015 10:44 am
Forum: Automation, sensing and robotics
Topic: Making music and sounds from putting electrodes on plants
Replies: 3
Views: 1700

Re: Making music and sounds from putting electrodes on plant

I don't just want to trigger predefined notes, we want to be able to hear differences depending on what leaves we attach, giving us room to experiment with different materials. Maybe something like a very sensitive resistance sensor, so that higher-up leaves would have a higher "resistance" (to the...
by Ravenous
Fri Feb 13, 2015 9:01 am
Forum: Off topic discussion
Topic: Topic Subject
Replies: 7
Views: 985

Re: Topic Subject

r3d4 wrote:FWP
I had to search for what this meant. Very funny! :lol: (And not rude as I had feared.)
by Ravenous
Thu Feb 12, 2015 5:34 pm
Forum: General discussion
Topic: The Raspberry Pi two -- A dream comes true!
Replies: 10
Views: 1854

Re: The Raspberry Pi two -- A dream comes true!

Nah it's still not good enough. I want five cores, and 1.1GB of memory. (And a sandwich.) ;)

Only kidding. Of course we like it (most of us anyway).
by Ravenous
Thu Feb 12, 2015 5:30 pm
Forum: Off topic discussion
Topic: Microsoft windows 10 on pi2
Replies: 6
Views: 1324

Re: windows on pi2

MattHawkinsUK wrote:Given how the question is worded the only answer is "yes".
Darn it, I said "I don't care"! I gave an impossible answer :lol:

(I know you were kidding.)

If I want microsoft 10, I'll just buy another computer for it. No problem.
by Ravenous
Thu Feb 12, 2015 4:24 pm
Forum: Off topic discussion
Topic: Vacuum?
Replies: 10
Views: 1813

Re: Vacuum?

aTao wrote:caterpillary* action
I thought that meant to pillory a caterer! :?
by Ravenous
Thu Feb 12, 2015 3:44 pm
Forum: General discussion
Topic: WWhat is "...the sticky posts "
Replies: 16
Views: 1927

Re: WWhat is "...the sticky posts "

blachanc wrote:Sticky are not labeled in the prosilver theme.
Thanks for posting that; I wasn't aware Prosilver did that. (I use the other theme.)
by Ravenous
Thu Feb 12, 2015 3:39 pm
Forum: General discussion
Topic: WWhat is "...the sticky posts "
Replies: 16
Views: 1927

Re: WWhat is "...the sticky posts "

macbreak wrote:Do not allow the cynical, bitter minority
You mean the ones who banned you? We're not stupid, we know you used to be glossywhite. The annoying signoff is a giveaway :lol:
by Ravenous
Thu Feb 12, 2015 3:36 pm
Forum: Other projects
Topic: SPACE
Replies: 9
Views: 1151

Re: SPACE

I know that space probes use electronic parts that have tougher specs for radiation vulnerability. How is the pi in this regard? Is it an issue near earth (within the Van Allen belts)? How about farther out? We've discussed this a few times, and I'm beginning to think it doesn't really matter. You'...
by Ravenous
Thu Feb 12, 2015 3:31 pm
Forum: General discussion
Topic: WWhat is "...the sticky posts "
Replies: 16
Views: 1927

Re: WWhat is "...the sticky posts "

Bargepole wrote:I did try Sticky Post but only "how to's" came up. Still no harm in asking the Forum is there ?
Absolutely no harm at all.

Come on chaps, question's answered. Let's give the man a break? :)
by Ravenous
Thu Feb 12, 2015 10:33 am
Forum: Android
Topic: Android on Raspberry Pi 2
Replies: 2
Views: 3939

Re: Android on Raspberry Pi 2

Have you read the sticky at the top of this forum? ;)
by Ravenous
Thu Feb 12, 2015 10:21 am
Forum: Automation, sensing and robotics
Topic: Cricket indoor location system + Raspberry PI
Replies: 1
Views: 557

Re: Cricket indoor location system + Raspberry PI

(I saw your earlier post on the other forum too)

I noticed the Cricket system has some software for download - I suppose the first stage would be to see if it'll compile on the raspi? The hardware looked interesting...
by Ravenous
Thu Feb 12, 2015 9:53 am
Forum: Beginners
Topic: Wich motor to use?
Replies: 9
Views: 997

Re: Wich motor to use?

Hello guys. I am new to working with RPI and I want to build in the futurI want to 3D print the robot's shell and make the eye+eyelids+the circle surrounding the eye to move (the center of the robot). The bit where the whole centre section swivels up and down (right at the start) looks very tricky ...
by Ravenous
Thu Feb 12, 2015 9:37 am
Forum: General discussion
Topic: Is there a place to solder power? B+ / RPi 2
Replies: 4
Views: 4032

Re: Is there a place to solder power? B+ / RPi 2

I've powered my raspis by making suitable GPIO connectors to go on the +5V and 0V pins. But you lose the protection of the polyfuse going that way, so you have to be careful not to short anything out.
by Ravenous
Thu Feb 12, 2015 9:30 am
Forum: Off topic discussion
Topic: Vacuum?
Replies: 10
Views: 1813

Re: Vacuum?

Edit to add: You can do the same thing with water, but the tube needs to be over 30 feet long and the vacuum won't be as good because water has a higher vapor pressure than Mercury. Also, trees can grow much higher than 30 feet, and that proves they don't use suction to draw up water! (Is there a m...
by Ravenous
Thu Feb 12, 2015 9:10 am
Forum: Raspbian
Topic: A SERIOUS Raspbian issue
Replies: 22
Views: 3197

Re: A SERIOUS Raspbian issue

Well, with all due respect, it is a matter of perspective and a matter of what do you need from the pi. My developers did not notice that until it was too late. Oh, I didn't realise that you were a professional and you are evaluating the raspi for a commercial application. In that case, yes I agree...
by Ravenous
Thu Feb 12, 2015 8:59 am
Forum: Troubleshooting
Topic: A+ killed by a L298N
Replies: 42
Views: 5758

Re: A+ killed by a L298N

If you suspect a short circuit could have occurred somewhere, that is probably the cause. Accidentally getting 6V onto one of the GPIO pins might have killed it. (I got a higher voltage onto a GPIO pin, because the circuit board wasn't held down properly and slid towards the power supply. Instant de...
by Ravenous
Wed Feb 11, 2015 6:03 pm
Forum: Troubleshooting
Topic: A+ killed by a L298N
Replies: 42
Views: 5758

Re: A+ killed by a L298N

Well if you had made a silly wiring error, I would have expected it to fail immediately. Check your wires which you screwed to the board, to make sure there isn't a long, very fine strand of wire somewhere causing a short. (Possible.) Other than that, I can't think what caused it to run for a while,...
by Ravenous
Wed Feb 11, 2015 5:58 pm
Forum: Off topic discussion
Topic: Lasers...
Replies: 29
Views: 3488

Re: Lasers...

rurwin wrote:https://www.youtube.com/watch?v=trxZY2bxOe8

It can't hurt too much; he catches the beam with his hand a couple of times. :roll:
My god, it's even mightier than Duct Tape! :lol:
by Ravenous
Wed Feb 11, 2015 5:53 pm
Forum: Troubleshooting
Topic: A+ killed by a L298N
Replies: 42
Views: 5758

Re: A+ killed by a L298N

Odd that it didn't fail immediately. Did you have any software (your motor drive program) running at the time it died?
by Ravenous
Wed Feb 11, 2015 5:35 pm
Forum: Off topic discussion
Topic: Fresnel Lenses
Replies: 23
Views: 3843

Re: Fresnel Lenses

physically about 20mm x 20mm. This in no way resembles a point light source, which all the discussions about fresnels seem to assume. Phew, good information! I hadn't realised they needed to be that big... :shock: By the way my assumption in everything above was: as long at the light is fairly well...
by Ravenous
Wed Feb 11, 2015 11:38 am
Forum: Troubleshooting
Topic: audio recording
Replies: 10
Views: 1404

Re: audio recording

Works fine with a line in connected to my phone but not when connected to my guitar Is it just because the guitar's output level is far too low? As R3D4 said, you might need some sort of preamp. If you have a distortion or compresor pedal handy you might be able to use that to boost the volume and ...
by Ravenous
Wed Feb 11, 2015 10:34 am
Forum: Off topic discussion
Topic: Fresnel Lenses
Replies: 23
Views: 3843

Re: Fresnel Lenses

If the LED doesn't cover the back of the large fresnel lens & the panel neatly, I suppose you could use a lens near the LED to widen or narrow the beam to get more coverage. I think this is what the condenser lenses are needed for in regular projectors (probably hefty heatproof things...) (I've neve...
by Ravenous
Wed Feb 11, 2015 9:02 am
Forum: Off topic discussion
Topic: Lasers...
Replies: 29
Views: 3488

Re: Lasers...

I used to have one. Maplin sold laser tubes at one point. The tube itself could be hand-held, but not the driver board. If you felt brave enough to hold the tube you had to be very careful. Lovely beam on it. Made a spot about 0.5 inch across at half a mile :) We used to have a large-ish cased lase...
by Ravenous
Tue Feb 10, 2015 5:02 pm
Forum: General discussion
Topic: Small Rant / Feature Request
Replies: 6
Views: 1506

Re: Small Rant / Feature Request

So lets go onto feature requests and perhaps someone can explain to me why these are already just not included. ( There is probably a reason I just don't understand why you wouldn't include it and figure out how to solve any issues that arrive form it ) Cost. (Short answer to a very long post!) Add...

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