miércoles, 19 de junio de 2013

Arduino by Davis: “Re: trouble with two multiplexers sharing i2c bus” plus 19 more

Arduino by Davis: “Re: trouble with two multiplexers sharing i2c bus” plus 19 more

Link to Arduino by Davis

Re: trouble with two multiplexers sharing i2c bus

Posted: 19 Jun 2013 03:25 AM PDT

You need to be a bit more specific. What is this LED you speak of?
What testing have you done?
It is good practice when using hardware to write a small sketch to just test the hardware is working before incorporating it into your project.
So we need to...

Re: LCD I2C

Posted: 19 Jun 2013 03:23 AM PDT

Gracias por la ayuda, pero ya está claro. Había 2 problemas

- La intensidad de la pantalla era muy alta y no se mostraba nada. He regulado con el potenciómetro y solucionado.
- La librería que usaba no funcionaba de forma correcta.

Re: What usb shield

Posted: 19 Jun 2013 03:23 AM PDT

Re: Raspberry Pi <-> Arduino Uno using i2c crashes after a while

Posted: 19 Jun 2013 03:20 AM PDT

That's really interresting. I'll try with a lower baudrate when I have the chance.

I'm begining to think that, as I only want to connect one arduino I could use a couple of gpio to make both communicate with a home made protocol...

Re: Problem with Wire.h library and Eclipse

Posted: 19 Jun 2013 03:18 AM PDT

Thank you for the answer but in my project I used Wire.begin() and the problem is still present. The problem seems to be that Eclipse does not include the Wire.h library in my project but it is able to find it.

Re: Vorschläge/Tipps gesucht: rechner/hardware für processing

Posted: 19 Jun 2013 03:11 AM PDT

Hi,
ist leider noch nicht eingetroffen. Sollte aber diese Woche kommen, Versandinfo gabs schon.
Habe mich allerdings noch nicht um den RAM gekümmert.

@ Eisebär (Stefan),
was willst denn für den RAM noch haben? 512 wäre natürlich super.
Welche PIN Anzah...

Re: Liquidcrystal.h not working with Wire.h

Posted: 19 Jun 2013 03:11 AM PDT

Hmm, I found a topic addressing a similar issue:
http://forum.arduino.cc/index.php/topic,39323.0.html

Well, it's three years old and gives a possible soulution, however it isn't working for me.
The "bug" has also been reported on google:
http://code.go...

Re: Problem with Wire.h library and Eclipse

Posted: 19 Jun 2013 03:08 AM PDT

It's not wire.begin(), it's Wire.begin(). C and C++ is case-sensitive!

Re: Combinazione di shield

Posted: 19 Jun 2013 03:08 AM PDT

Si e No!
A causa di un errore/features in fase di progettazione la piedinatura delle millefori non corrispondono esattamente ai pin di arduino.
E' necessario inserire degli headers con i pin lunghi e piegarli leggermente.
Niente di impossibile comunque.

Re: I2C speed on Arduino DUE

Posted: 19 Jun 2013 03:06 AM PDT

The speed of the I2C is fixed on the Due (at least if you use the Wire library):

Code:
TWI_ConfigureMaster(twi, TWI_CLOCK, VARIANT_MCK);

and

Code:
static const uint32_t TWI_CLOCK = 100000;

So I doubt that the speed is your problem her...

Pololu switch not working, help

Posted: 19 Jun 2013 02:27 AM PDT

Hello guys,

I've bought a Pololu switch SV but can't get it to work 100%.
I wired it like so but couldn't turn the Pololu on:


Now I started to debug it and...

Re: Problema con stringa RS 232

Posted: 19 Jun 2013 02:27 AM PDT

cosi non compila, "error: hex escape sequence out of range"
Serial.print("\x02ADZZ;PON\x03"); 

cosi compila (ide 1.0.5):
Serial.print("\x02""ADZZ;PON\x03");

two arduino serial communication ...

Posted: 19 Jun 2013 02:26 AM PDT

I connected two arduino to each other using pin 0 and 1 ( tx of one arduino to rx of other and GND to GND) Then I burnt the example " switch case 2 " (u have to press letter 'a' ,'b' 'c'... on keyboard to switch on LED at pin 13,12,11..)  to one arduin...

Re: DUE + Ethernet Shield + RTC DS3234 = SPI Problem?

Posted: 19 Jun 2013 02:26 AM PDT

I'm not experienced with the Due SPI, so you may have to play with it a bit. Let us know if you get it working and how.

Re: Unusual problems with my drive software

Posted: 19 Jun 2013 02:24 AM PDT

Quote
Problem is this drive board needs four PWM outputs (two motors * two directions) so I guess I am out of luck.
The directions do not need PWM pins. The motor is either spinning clockwise or counterclockwise. What sense would there be in a...

Re: DIY Game Show Buzzer

Posted: 19 Jun 2013 02:05 AM PDT

where to buy cheap NFL jerseys? who can tell me? i found a site selling cheap NFL jerseys, and who can tell me if it is trustworthy? http://justsosoi.webs.com/ smiley-razz

Re: launch4J error

Posted: 19 Jun 2013 02:03 AM PDT

This looks like a true arduino created problem. I could never delete the libraries folder even using a different operating system. So i moved it to the desk top and was then able to delete the arduino folder remaining in mydocuments. In the folder I mo...

Re: Arduino on a Breadboard su millefori

Posted: 19 Jun 2013 02:02 AM PDT

@Michele: LOL nn c'avevo pensato smiley-grin

@leo: oramai avevo già comprato le stripboard.. cmq col trucchetto del taglierino mi fa risparmiare in saldature (visto che sono pessimo in materia smiley-cry ) E per quanto riguarda il software l'avevo trovato ieri e c'ho s...

Re: SoftwareSerial in a class

Posted: 19 Jun 2013 02:02 AM PDT

Quote
.ino in part
Wrong. Post ALL of the .ino file. There may be (plenty) of other things wrong, besides the major problem that MarkT points out.

Re: Relai bistable pour va et vient

Posted: 19 Jun 2013 02:01 AM PDT

il n'y a quasiment pas de résistance pour une diode polarisée dans le sens passant, pour calculer l'intensité dans ce cas tu vas utiliser uniquement la résistance. Ici 1k, ...
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