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1  Using Arduino / Programming Questions / Re: Shorten SPI.transfer function on: Today at 04:59:57 am
I suggest you read up on for loops.
2  Using Arduino / Programming Questions / Re: Arudio ip camera anti loitering programming on: Today at 04:56:38 am
I'll repeat what I said in the other thread:

Quote
What is really needed here is a device that sends out an annoying noise when people cross-post the same question four or five times in a row. Something only audible to cross-posters.
3  Using Arduino / Programming Questions / Re: Arudio ip camera anti loitering programming on: Today at 04:54:08 am
Hi jason89, welcome to the forum.

Are you in any way related to max1994 who made a very similar post here?

http://forum.arduino.cc/index.php?topic=265943.0

You seem to have the same IP address as max1994.

And do you recall me mentioning to not cross post?


Did you manage to forget all that?
4  Using Arduino / Programming Questions / Re: Question about I2C: Master Reader/Slave Sender on: Today at 04:49:12 am
Code:
  Wire.onRequest(requestEvent);

  Wire.begin(3);
  Wire.onRequest(requestEvent2);

You can only have one request event.
5  Using Arduino / Programming Questions / Re: Question about I2C: Master Reader/Slave Sender on: Today at 04:48:14 am
Code:
void requestEvent2()
{
  Wire.write("Welcome "); //respond with message of 6 bytes
                        //as expected by master
  Serial.println ("");
}

Hardly 6 bytes, eh?

Don't do Serial prints inside an ISR.

http://gammon.com.au/interrupts
6  Using Arduino / Programming Questions / Re: Question about I2C: Master Reader/Slave Sender on: Today at 04:28:52 am
Quote
I tried that way, but it doesn't work.

Post your code please.

And read this:

http://www.gammon.com.au/i2c
7  Using Arduino / Installation & Troubleshooting / MOVED: HELP!!!!!! Arduino Robot Not Responding on: Today at 04:18:33 am
This topic has been moved to Project Guidance.

http://forum.arduino.cc/index.php?topic=269822.0
8  Using Arduino / Installation & Troubleshooting / MOVED: ATTINY84 do not read DHT22 on: Today at 04:17:41 am
This topic has been moved to Project Guidance.

http://forum.arduino.cc/index.php?topic=266049.0
9  Using Arduino / Programming Questions / Re: How to display on serial monitor? (Questions and Answer Input) on: Today at 04:08:40 am

This Thread Planning and Implementing a Program might help you ...

Now stickied. smiley
10  Using Arduino / Programming Questions / Re: How to assign a number (read from sd card) to a BigNumber variable! on: Today at 04:06:04 am
What do you say to reply #11?
11  Using Arduino / Programming Questions / Re: How to assign a number (read from sd card) to a BigNumber variable! on: Today at 03:55:22 am
Code:
0.00000000000747245117

0.00000000001291986807

0.00000000010383718147

0.00000000011130963264


Explain the blank lines.
12  Using Arduino / Programming Questions / Re: How to assign a number (read from sd card) to a BigNumber variable! on: Today at 03:39:41 am
Code:
char temp_arr[23];
  temp_arr[23] = 0; // <=== NULL terminated

?

http://www.gammon.com.au/forum/?id=12153#trap11
13  Using Arduino / Programming Questions / Re: How to assign a number (read from sd card) to a BigNumber variable! on: Today at 02:30:54 am
mmmm, well I don't claim to be a genius, of your level, but passing snide remarks is not helpful when a beginner is obviously struggling.

PaulS is just trying to help. He has a lot of patience, doing 50000+ posts, helping people out.

Saying that something you are doing is "an error" is pretty mild stuff.

I've been glancing at some other forums today whilst trying to get at the bottom of some compiler behaviour, and I can tell you that some of them are pretty savage.
14  Using Arduino / Programming Questions / Re: Problem with tacho on: Today at 01:52:37 am
Engine is running at 1400 rpm and arduino is reading around 400rps
...
I have worked out it needs to be multiplied by almost3.5 to make it accurate

Do you mean "divided by"?

400 rps is 24000 RPM.

So you are expecting 23 rps? Sounds like a few bounces to me.

1400 / 60 = 23.3

So you are getting 400 rps, and you should be getting 23.3.

400 / 23.3 = 17.1

Where do you get 3.5 from?
15  Using Arduino / Installation & Troubleshooting / MOVED: Arduino Mega 2560 5v on: Today at 01:31:46 am
This topic has been moved to Project Guidance.

http://forum.arduino.cc/index.php?topic=270006.0
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