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1  Community / Exhibition / Gallery / Re: Arduino Audio Mixer with TDA7439DS, speaker remapping, equalizer, remote ... on: April 07, 2013, 06:00:30 pm
Congrats -it looks like a lot of work but satisfying no doubt

Guess everybody has moved from audio projects to light flashing and other interesting stuff with arduinos
This is a step back I suppose so no comments yet. let me be the first.
Seems like a bit of Overkill for me . I was not able to read the schematic on either site.
Since 5 y.o. I have only  one ear that works so I hear everything in mono.
Would not think you can notice the difference with all your features even with two ears
2  Community / Exhibition / Gallery / Re: Wireless Amp Control on: April 07, 2013, 05:47:01 pm
I enjoyed that too and I liked your guitar work .
Will you post a schematic and code?
Also I can't download Utube videos is it possible to give a download link that I don't have to log into to download
I just won't support these tightening controls on who posts and who downloads all over the net . It will just keep getting worse if we accept it..
3  Community / Exhibition / Gallery / Re: Secret vehicle compartment opened by using stock button combination on: April 07, 2013, 05:26:23 pm
$100.00? $1000.00? $10,000.00?
Actually, that last amount is about it - because if you try to deposit that amount (or transfer such amounts) at least here in America - there's a whole process you have to wait through, so they can make sure it isn't a drug money transaction or something else nefarious. Now - if it were $9,999.00 - it would probably go right on through, but who really knows in our lovely post 9/11 OMGTERRORISTS!!!1111!!!eleventy! world... So I imagine they would confiscate your 10Gs of money if they found it on you - and especially if it were "hidden" in a lock-box or elsewhere in your car.
I'm stunned . Didn't think they would allow this to get passed in the States.
In Australia it used to be $10,000 for a few years but now its been reduced to $5000. Thats the way they do it .
I went to get $1000 from the Post Office by way of Money Order and had to supply my drivers licence and place of residence which they typed into their computer . Makes you think.

scottiejmurray- hope you will ignore this aside and let us know how it goes with pictures . A previous post  reminded you- you can post your pictures directly on to this site! When all else becomes doubtful a post hole digger and a length of plastic pipe with ends makes the best safe.
4  Community / Exhibition / Gallery / Re: Secret vehicle compartment opened by using stock button combination on: April 05, 2013, 04:48:18 pm
I happened to read that article the other day, quite interesting.

No technical details, but from the description, as CB says, it pretty much points to a CANBUS tap. I was surprised at how hard they threw the book at the guy that built the traps. He got twice the sentence that the drug dealers did. It would have been hard to argue that he was innocent, but I think they got it backwards.

Well its a long read but its another example of taking the law too far and will be appealed . So it will be deeply scrutinised .
The builders knowledge of what it will be used for is the central theme .
A common hacker refrain is that technology is always morally neutral. The culture’s libertarian ethos holds that creators shouldn’t be faulted if someone uses their gadget or hunk of code to cause harm; the people who build things are under no obligation to meddle in the affairs of the adults who consume their wares.

But Alfred Anaya’s case makes clear that the government rejects that permissive worldview. The technically savvy are on notice that they must be very careful about whom they deal with, since calculated ignorance of illegal activity is not an acceptable excuse. But at what point does a failure to be nosy edge into criminal conduct? In light of what happened to Anaya, that question is nearly impossible to answer.

“What’s troubling a lot of people is that this conviction seems to impose a new sort of liability on people that create state-of-the-art technology,” says Branden Bell, an attorney in Olathe, Kansas, who is handling Anaya’s appeal. “The logic goes that because he suspected his customers of doing something, he had a duty to ask. But that is a duty that is written nowhere in the law.”
5  Community / Exhibition / Gallery / Re: Secret vehicle compartment opened by using stock button combination on: April 05, 2013, 04:29:40 pm
Once that thin edge of the wedge goes in the people given the authority to administer at law always take it to the excess.
I don't say it didn't happen in the past but it is certainly far more prevalent now.

I would hope readers and wowsers take note here that you get what you deserve.
If you allow the thin edge in , someone will use it in a way that was not really intended

Watch yourself when you say " There should be a law against this!"
On a lighter note I have been making secret compartments in boxes for years after starting with one of those old chinese puzzle boxes where pieces slid in places and ways you just did not expect.

Where are they now?

I like your project and will follow along
Thanks for posting
6  Community / Exhibition / Gallery / Re: THE HOME MOSQUITO TRAP | HELP ME KILL MOSQUITOS* AND SAVE LIVES on: April 05, 2013, 04:21:11 pm
I think the original post is just an advertising prank and maybe a virus spreading prank at that.
I noticed also that the second pdf does not download so why does he leave it there ?

All the references just give you the same advertising speel and nothing is said of any Arduino connection

I think his posts  should be removed but leave the soda pop posts .
I use them all the time for fruit flys and very effective they are even with a splash of beer in them
7  Community / Exhibition / Gallery / Re: Power Outage Logger on: April 05, 2013, 05:07:28 am
Hope its battery powered!
Nice piece of timber
Could you get a 9Volt on there too?
8  Community / Exhibition / Gallery / Re: GPS digital clock on: April 04, 2013, 04:18:50 am
Perhaps better to move to Queensland. No Daylight saving there!
9  Community / Exhibition / Gallery / Re: New Etching Method on: March 30, 2013, 03:38:30 pm
Draw a polygon, Name it Gnd.
10:30 into the EagleCAD tutorial by Jeremy Blum he steps through how to do this (his tutorial page is here).

Cheers ! Geoff

My Thanks Geoff
10  Community / Exhibition / Gallery / Re: Simple UPS for 2 iPhones and 1 house phone on: March 29, 2013, 04:50:51 pm
I liked this post as I do not like LM78L05's which sends full voltage out if it loses ground for any reason.

Does this device (DC-DC)do this too?

Also I see
The picoUPS-100 also has a built-in, two stage battery charger unit.
Do you know its cut in and cut out voltages or are there any details available on that?

Thanks for the post
11  Community / Exhibition / Gallery / Re: New Etching Method on: March 29, 2013, 03:34:03 pm
Thanks to the OP. Useful stuff

I am assuming those who are drawn to this will know the answer to my question which is .

Using Eagle free how can I make it leave as much copper on the board as possible?
12  Community / Exhibition / Gallery / Re: Demultiplexer/3 to 8 decoder on: March 23, 2013, 05:07:52 pm
so at this point its just a serial flashing of lamps over and over with the rate set by a pot on A0

I like it
Did this myself with a 10 chip 30 years ago to show series or  voltage but the best thing by far was the flashing lights ,fascinating
13  Community / Exhibition / Gallery / Re: my first project: light sensor and LEDs bar graph on: March 21, 2013, 05:19:49 pm
Yes its well set out and seems to work well
It could be enlightening to use an LED as the light sensor also instead of the LDR
I have been experimenting with LEDs as light sensors and they do work OK
14  Community / Exhibition / Gallery / Re: vibration control in piezoelectric element with multiresolution pid on: March 21, 2013, 05:44:54 am
I am assuming then its like feedback in an audio system ? Your signal fed back cancels the source signal so all that is left is PID
Potential Incendiary Device?

Just kidding
What is a PID when it is at home?

"So I decided to put to the test recent developments in multiresolution PID control [1]. "

Can you visually see on an atomic scale with this? , and where do you look?
Perhaps its just data .
I'm pretty ignorant on this , could you explain a little more please? I would like to consider if I can use this for anything I may want to do.
15  Community / Exhibition / Gallery / Re: Musicomatic : the random jazz machine on: March 11, 2013, 04:49:20 pm
Well the drum beat part was good but the music sucked
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