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1  Using Arduino / Programming Questions / Run arduino as webserver and display a bitmap image. on: February 20, 2013, 04:29:55 pm
Is it possible to use arduino uno as a webserver
and create and display a bmp image (8 bit color)
on the website?
2  Using Arduino / Networking, Protocols, and Devices / Re: Any way to add ethernet to Arduino cheaper than shield? on: August 25, 2011, 02:50:43 pm
I have the ethernet shield rev5 w/o POE module ,bought it for 29€.

I think its great value , i was running a webserver in about 30 mins.

A basic W5100 module will cost you min 20€ (even ebay china stuff).

The ENC28J60 is a great chip but it does not contain a TCPIP stack like the W5100.
I found coding the w5100 shield is super easy with the arduino library
3  Using Arduino / Networking, Protocols, and Devices / Re: New ethernet shield? on: August 25, 2011, 02:42:48 pm
Quote
SHAME ON SOMEBODY... no board should be produced without a clear version id somewhere in the silkscreen...
+1 to this - I agree all boards should have a version so we know which we're talking about.

make that +2 (i seem to have rev5 of the ethernet shield)
4  Using Arduino / LEDs and Multiplexing / Re: Max current out of 5v pin on UNO? on: August 25, 2011, 12:52:20 pm
450 should do the trick for a test with a powerled i'd like to do.
thx for the fast response.
5  Using Arduino / LEDs and Multiplexing / Max current out of 5v pin on UNO? on: August 25, 2011, 12:17:57 pm
How much current can I safely draw from the 5v pin
on the UNO when powered from USB or power jack ?
6  Using Arduino / Networking, Protocols, and Devices / Re: Password protect for arduino webserver? on: August 19, 2011, 05:51:35 am
@arian , yes i looked at your example but I noticed it was for the ECN28J60 Ethernet chip.
I have the arduino ethernet board with the W5100 chip.

@zoomkat yes , I m already doing that port 'trick' but I was looking for some extra security
which I could use for other projects as well.
7  Using Arduino / Networking, Protocols, and Devices / Re: Password protect for arduino webserver? on: August 18, 2011, 04:07:55 pm
cool smiley
8  Using Arduino / Networking, Protocols, and Devices / Re: Password protect for arduino webserver? on: August 18, 2011, 03:58:51 pm
I would like to control some home equipment connected to my
arduino on or off. High security wont be necessary.

I still have no idea how to implement the basic authenticiation in a sketch.
9  Using Arduino / Programming Questions / Re: Interrupts and include headers on: August 17, 2011, 02:08:40 pm
Thx for the useful tip.
10  Using Arduino / Programming Questions / Re: Remember you're a button on: August 17, 2011, 02:04:55 pm
Do a search for "debouncing button" to get on your way.
11  Using Arduino / Programming Questions / Re: Interrupts and include headers on: August 17, 2011, 10:50:49 am
Here ya go smiley
Code:
// Blink Led using Timer2 Overflow interrupt
//#include <avr/interrupt.h >
//#include <avr/io.h >
#define PS1024 0x07 // Prescaler 1024

volatile int Iscaler = 0;
int ledpin= 7 ;                                         // Change this for your led default=13
volatile int state = 0;

// 16 Mhz / 1024 / 256 is Iscaler=61 for about 1 sec
ISR(TIMER2_OVF_vect)                                    // Timer2 Overflow interrupt
{
  Iscaler += 1;
  if (Iscaler == 61)
  {
    Iscaler = 0;                                        // Reset the counter
    state^=1;                                           // Change state for Led
    digitalWrite(ledpin,state);                         // and update the Led
  }
}

void setup() {
  pinMode(ledpin, OUTPUT);
  TCCR2A = 0;                                           // Normal mode
  TCCR2B =PS1024;                                // Timer2 Prescaler /1024
  TIMSK2 |= (1 << TOIE2);                               // Timer2 Overflow Interrupt Enable
  TCNT2 = 0;                                            // Tmr overflow 256
  sei();                                                // Enable interrupts
}

void loop()                                             // Here we can do other stuff
{                                                       // while the led keeps blinking
}

12  Using Arduino / Programming Questions / Re: Interrupts and include headers on: August 17, 2011, 10:32:23 am
Actually the question should be why does it work without the header file?
13  Using Arduino / Programming Questions / Interrupts and include headers on: August 17, 2011, 10:02:06 am
I have arduino 022 and I'm using some interrupt function
when I disable //#include <avr/interrupt.h > in my sketch
It still compiles fine.

Is it automatically loading or did they change stuff in 022 ?
14  Using Arduino / Networking, Protocols, and Devices / Password protect for arduino webserver? on: August 15, 2011, 03:52:53 am
I would like that when i connect to my webserver i have
To enter a password before i can see the server.

Are There  any examples on how to do that?
15  Using Arduino / Networking, Protocols, and Devices / Re: heat-power consumption ethernet shield wiznet 5100 chip on: August 13, 2011, 06:13:36 pm
-My W5100 chip measures around 48 °C   at Ambient Temperature of 24°C
-On the wiznet forum they say "it is normal don't worry about it"
-I would stop worrying if temperature was < 40 °C smiley

-Any long term users of the arduino W5100 shield ?
-I just got mine rev 5
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