lunes, 13 de mayo de 2013

Arduino by Davis: “Re: 4 LDR Solar tracker - Uneven reading when exposed to even light” plus 19 more

Arduino by Davis: “Re: 4 LDR Solar tracker - Uneven reading when exposed to even light” plus 19 more

Link to Arduino by Davis

Re: 4 LDR Solar tracker - Uneven reading when exposed to even light

Posted: 13 May 2013 02:09 AM PDT

Thank you for your comments. I am reordering my code and trying to incorporate some of them. I still don't know how much solar panel aiming will be affected by these lack of precission, but I suppose that it will not be serious. Using 1% tolerance resi...

Re: SD Karte beschreiben schneller als USB

Posted: 13 May 2013 02:08 AM PDT

Das is ja das Ding, es geht weniger um die Anzahl als um die Geschwindigkeit.

Primär geht es um kontinuierliche Speicherung, da ich dann nur durch den Speicherplatz begrenz bin.
nice wär aber 30 Sekunden mit 1500Hz, also 45000 Werte (je Zeit, AI0,AI1)
...

Re: Car Power Supplys BOOST AND EGT

Posted: 13 May 2013 02:02 AM PDT

I think you need only 500mA.
With a capacitor (I guess 2200uF ... 4700uF), you should be able to keep the Arduino running during starting the car.

I can't tell if the DC-DC converter can handle spikes. Perhaps the Arduino can handle spikes better than ...

Re: Ethernet shield + Dyndns, non sempre funzionante

Posted: 13 May 2013 02:02 AM PDT

Ah, ottimo consiglio.. Grazie!

Ora comunque sto provando, se mi imbatto in comportamenti strani o anomali magari riporto qua  smiley

Your body becomes a swarm of colorful particles

Posted: 13 May 2013 03:00 AM PDT

Universaleverything

Universal Everything's installation for Nike: your body becomes a swarm of colorful particles | AMUSEMENT.NET.

Universal Everything created an installation to promote Nike's latest technology, Flyknit. The four sides of a video cube stream a slightly altered version of the visitor's reflection. Kinect cameras capture his presence and translate it in a swarm of colorful particles that follow the visitor's movement. The installation was presented during the Milano Design week and will be touring the world through out October.

AMUSEMENT RATE: Nike is always great at surrounding itself with the best creative people in order to promote its products. This Universal Everything installation is no exception. The studio did a great job at combining Nike's promotion needs with an artistic and interactive approach that would entertain the visitors. The freedom of movement brought by the Flyknit technology find a direct translation in the generative design piece created by Universal Everything.

Kinect hack / art / Nike & more.

Re: SD Karte beschreiben schneller als USB

Posted: 13 May 2013 01:58 AM PDT

256000Baud sind eigentlich außerhalb der max Geschwindigkeit, aber wenns funktiniert.

Wieviele Meßwerte mußt Du zwischenspeichern?
Grüße Uwe

PC fans switch

Posted: 13 May 2013 01:57 AM PDT

Hi,
when a certain temperature is reached, I need to switch 3 12v PC fans on. When the temperature is lowered, I need to switch them off.
For my application, it is possible that the fans have to stay on for about 10 hours.
Fans use 120 mA @ 12v each, m...

Re: New blog entry about photointerrupter basics

Posted: 13 May 2013 01:53 AM PDT

Hello robtillaart,

thanks for your reply. I am already writing the next one...

Practical applications will also come.

Have a nice day

Elektrix

How to bias a sinusoidal signal

Posted: 13 May 2013 01:51 AM PDT

Hi,

I have a signal that varies between +/-1.5v and I thought that to make it a positive analog signal I could just add (bias) it with +2V, then process it, then subtract those 2V (unbias) so as to have a final output that is a processed version of the...

Re: Ethernet shield + Dyndns, non sempre funzionante

Posted: 13 May 2013 01:50 AM PDT

Si il pin 4 è l'enable della SD, se non lo imposti viene abilitata in modo random causando problemi

ISOTOPES v.02 Mapping Festival 2013 Geneva / NONOTAK

Posted: 13 May 2013 02:00 AM PDT

The idea of "ISOTOPES" is to generate a dematerialised space. The catalyst of the project have been post Fukushima's atmosphere. This tragedy that collided within our memories and childhood has led us to think about the brittleness of reality. This point of no return reflects the brutality of this evolving world that surrounds us, replacing any individual's existence into fiction.

"Isotopes" is an open space which can also be perceived as a prison. At first, the slow and hypnotizing moving lights attracts the visitor into the heart of it. Then, the rhythm and the intensity become continually more aggressive until it generates immaterial barriers: it's easy to get in but neigh impossible to get out. This echoes the way humans approach nuclear power. First seduced, then addicted by its comfortable energy, humans have become trapped in an unstable situation. The rhythm of the lights and the sounds bring back the connection between the Japanese and their awareness of radioactive omnipresence. Sometimes you can forget it, like the glow of a night light, but sometimes the conscience gains the upper hand, and fear comes back with loss of ground reference. Through the metamorphoses of its appearance, this installation leaves the visitor between what once existed and what didn't, drawing them into the spectrum of their own volatile emotions.

Steamroller Music Box + Excavator Knitting Machine by Artist Dave Cole

Posted: 13 May 2013 02:00 AM PDT

davidcole04

davidcole06
Artist Dave Cole transforms construction equipment into knitting machines, orchestras and a binary code internet search mechanism.  via designboom.


davidcole07

davidcole03

Wringing out a wash cloth in space

Posted: 13 May 2013 01:00 AM PDT

CSA Astronaut Chris Hadfield performed a simple science experiment designed by grade 10 Lockview High School students Kendra Lemke and Meredith Faulkner. The students from Fall River, Nova Scotia won a national science contest held by the Canadian Space Agency with their experiment on surface tension in space using a wet washcloth.

Re: ArduoAlarmMega / ArduoMegaAlarm

Posted: 13 May 2013 12:54 AM PDT

Ciao a tutti,
non riesco a trovare un negozio che venda il componete:
Fusibile 2A - TCO USW-211T

è possibile sostituirlo con un'altro?oppure dove potrei acquistarlo?
mentre quale diodo da 2A devo acquistare (ce ne sono vari)?

Re: Estrarre una variabile da SD

Posted: 13 May 2013 12:53 AM PDT

Re: DAYTIME Dienste Deutschland

Posted: 13 May 2013 12:51 AM PDT

Ich bekomme nämlich um 20 Uhr meiner Zeit die Meldung mit 18 Uhr vom Server zurück und möchte das nicht umrechnen.

Du brauchst nur auf die UTC-Sekunden seit 0...

Re: Is there an easy way to communicate 2 Arduino?

Posted: 13 May 2013 12:50 AM PDT

Okay, this time It worked! I replaced the potentiometer with a new one. Sorry about that  smiley-lol

Re: DDS Lookup table length

Posted: 13 May 2013 12:50 AM PDT

Hello,
Yes, all you say is right.
The Shannon theorem says that your sample rate must be more than twice the higher frequency.
So if you want sinusoidal signal from 50Hz to 500Hz, a sample rate at 1 kHz should be enough (higher is better).
Your table l...

Re: Programming Bare SAM3X Chip

Posted: 13 May 2013 12:13 AM PDT

Are Y1 and Y4 both supposed to be 16MHz, or just Y4?

Re: Programming Bare SAM3X Chip

Posted: 13 May 2013 12:11 AM PDT

I'm curious if you made any progress on this or solved your problem. I'm working on building my own Due and just got my first boards back. Windows isn't recognize it as a USB device and I'm working my way down several avenues to figure out what the iss...
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