Arduino by Davis: “Buying an Arduino” plus 19 more

Buying an Arduino
problèmes transfére programmes : port série ?
Simple Image Processing
Re: 0-40ma output from 0-5v?
Re: using arduino to recognise gestures
Re: Interfacing to circuit which grounds the input
Re: Daten(IP) von SD lesen
Re: Arduino UNO vs Leonardo
Re: Requête HTML/1.1 RN-XV
Re: Help in programming the Atmega1284 with maniacbug-mighty-1284p.
Re: Not able to get graphic LCD to work with Uno
Re: {Need help} Error Compiling
Re: using arduino to recognise gestures
{Need help} Error Compiling
Re: Konstantstromquelle für Power-LED
Re: Arduino PWM massive transient
Re: 0-40ma output from 0-5v?
Re: My DIY solder paste stencil
Re: 0-40ma output from 0-5v?
Re: Daten(IP) von SD lesen

Posted: 19 Jan 2013 01:47 AM PST

Hello,
I am wondering if there are any good shops in Perth, WA to buy an arduino UNORev3(preferably in a kit). I really want one but have not been able to find any shops that sell them.
Thanks in advance
-DxandxC-

problèmes transfére programmes : port série ?

Posted: 19 Jan 2013 01:44 AM PST

Bonjour,

J'ai une carte arduino uno et le logiciel arduino 1.0.3.
Je branche ma carte, les LEDs s'allument, je tente de transférer un programme pour tester. Et la : erreur :

port série "COM1" non trouvé. l'avez vous bien séléctionné dans le menu outi...

Simple Image Processing

Posted: 19 Jan 2013 01:42 AM PST

Hello,

Basically I want to implement simple image processing using Arduino (whichever works).
The board with a camera will be mounted on a small 4-wheeled car.
Basically I will be holding a bright Red LED and the objective of the car is to follow me us...

Re: 0-40ma output from 0-5v?

Posted: 19 Jan 2013 01:41 AM PST

I'd use the arrangement in the attached schematic. The RC network smooths out the PWM and steps it down to 0 to 0.88V, then the op amp and transistor convert that into 0 to 40mA.

Re: using arduino to recognise gestures

Posted: 19 Jan 2013 01:38 AM PST

okie... i am a newbie to aurdino i need ur help even if its a simple question pls guide me...i am thinking the coding can be done in two ways....<1> getting the total resistance value and mapping it to the sign to display.. or <2>should i take the tota...

Re: Interfacing to circuit which grounds the input

Posted: 19 Jan 2013 01:17 AM PST

Instead of using pulseIn, do a number of digitalRead calls at regular intervals over a period much larger than the PWM period, and compute the ratio of HIGH reading to total readings.

Re: Daten(IP) von SD lesen

Posted: 19 Jan 2013 01:12 AM PST

Wie wäre es denn einfach mit:

Code:

byte ip[4];
ip[0]=getIntFromString (charBuffer, 1);
ip[1]=getIntFromString (charBuffer, 2);
ip[2]=getIntFromString (charBuffer, 3);
ip[3]=getIntFromString (charBuffer, 4);

Re: Arduino UNO vs Leonardo

Posted: 19 Jan 2013 01:11 AM PST

io ho quasi sempre preso leonardo... mi sono sempre trovato abbastanza bene. Vero è che ci sono degli shield che non contemplano la Leonardo per via di taluni pin spostati però la leonardo ti da di contro qualche pin in più e questa cosa dell'usb che ...

Re: Requête HTML/1.1 RN-XV

Posted: 19 Jan 2013 01:11 AM PST

Une petite idée ?? car ça fait 2 jours que je bloque dessus :s

Re: Help in programming the Atmega1284 with maniacbug-mighty-1284p.

Posted: 19 Jan 2013 01:10 AM PST

I have a bit more of information. First off, I've been reading through the interminably
long thread "ATmega1284P: End to End using 1.0 IDE", and there were gazillions of sketch
uploading and other problems over there, fuse settings/whatever. Was anythi...

Re: Not able to get graphic LCD to work with Uno

Posted: 19 Jan 2013 12:36 AM PST

Quote from: Paresh Mathur on Today at 12:38:33 AM

I am telling you guys, all the lines are perfectly soldered and in the correct place. I have ripped them out and rewired it like 15 times and double checked with a dvm...

Re: {Need help} Error Compiling

Posted: 19 Jan 2013 12:33 AM PST

Not to sure yet. Add the function prototypes ( for loop and setup ) your self above all the classes.

Even try placing them above all includes and defines.

Re: using arduino to recognise gestures

Posted: 19 Jan 2013 12:27 AM PST

A flex sensor is just a variable resistor, so the code is just an analogRead function call. Just the same as if it were a pot.

{Need help} Error Compiling

Posted: 19 Jan 2013 12:26 AM PST

I tried to upload code to the Arduino Mega ADK but always come out a warning "error compiling". Is there something wrong with the code? How do I fix this?

the code :
[code]

#include <inttypes.h>
#include <avr/pgmspace.h>

//#include <Spi.h>
#include <Ma...

Re: Konstantstromquelle für Power-LED

Posted: 19 Jan 2013 12:25 AM PST

Quote from: volvodani on January 18, 2013, 03:13:17 PM

Uuups da ist mir der Link durchgegangen in meinem Post ich habe mir solche gehackt: ....

Danke, werde ich mir auch mal näher ansehen. Die sehen auch nicht schlech...

Re: Arduino PWM massive transient

Posted: 19 Jan 2013 12:15 AM PST

First off current only flows it does not sit.
Second that spike is on the amplifiers inside the scope, it is not real and it does not come out of the scope.

Re: 0-40ma output from 0-5v?

Posted: 19 Jan 2013 12:15 AM PST

You might want to consider something like this, where the Arduino i/o pin switches a transistor.

Re: My DIY solder paste stencil

Posted: 19 Jan 2013 12:13 AM PST

edges that are not flat with your material is not your friend

Re: 0-40ma output from 0-5v?

Posted: 19 Jan 2013 12:12 AM PST

The value of 40mA is the point where damage starts to happen. You are best trying to stick with currents under 35 to 30 mA.
Yes a resistor will limit the current but what are you feeding it into?