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61  Using Arduino / Programming Questions / Re: Coding error help needed ASAP THANKS!! on: September 06, 2013, 01:48:43 pm
As im new to C. Could you help me to overcome this error, i tried it by declaring but still getting the same problem. Thanks

I'm unfamiliar with the library.

What exactly are you expecting these method calls to do? What methods are available with this library that match what you are trying to do?
62  Using Arduino / Programming Questions / Re: how to terminate connected input and output.... on: September 06, 2013, 01:46:53 pm
How do you define "anti-equal"? Do you mean opposite? You can use the not operator:

digitalWrite(6, !digitalRead(4));
63  Using Arduino / Programming Questions / Re: Coding error help needed ASAP THANKS!! on: September 06, 2013, 01:41:11 pm
That error is pretty cut and dry: you're trying to call functions that aren't defined as being part of that class.
64  Community / Gigs and Collaborations / Re: help on: September 06, 2013, 11:58:37 am
Ahhh... The biweekly not-enough-information-help-request thread from shram97.
65  Using Arduino / Project Guidance / Re: Newbie Needs Help on: September 04, 2013, 08:28:21 pm
shoot I don't even know what any of the code things mean

Maybe the best place to start then, would be to learn what the "code things" mean. Start with some of the simple examples that come with the Arduino to learn the basics.
66  Community / Gigs and Collaborations / Re: Controlling RGB Leds from Live video feedback(Using processing) on: September 02, 2013, 12:09:06 pm
So the Arduino program that you posted works with regards to controlling the LEDs? You just need to parse the string coming from processing and set the appropriate colors based on that serial input?
67  Using Arduino / Programming Questions / Re: im new but can someone expalin this one thing to me. on: September 01, 2013, 11:11:30 pm
HIGH and LOW don't directly map to on and off; that will depend on how you have the output device wired.
68  Using Arduino / Programming Questions / Re: Changing analog input for clock ds1307 on: September 01, 2013, 09:01:56 am
I'm using the ds1307 clock , and I want to know if it is possible to change the analog input of it
I'm using this code (for setting the time and for printing it ) - and as you can see it said to connect to A4 and A5

Unless there is some type of software I2C library out there, you can't.

The device isn't using A4 and A5 as analog pins, it's using them because they are connected to the I2C hardware on the chip.
69  Using Arduino / Programming Questions / Re: Simple problem with OR statement on: August 29, 2013, 12:26:36 pm
So, it comes down to my OR (||) expression. For example, if ( works, but if ( || 28) does not.

That's because the compiler doesn't know you mean:

"if the day is the 28th or the 2nd."

The compiler sees it has

"If the day is the 2nd or if 28 is true."

28 is non-zero, so it's always true. You need to be more explicit:

if ( == 28 || == 2)
70  Using Arduino / Programming Questions / Re: whats wrong in my code ( RFID READING) on: August 29, 2013, 11:00:19 am
any suggestions about what can be done to make the reader read continuously

Assuming this is actually a clone of the ID series, then did you try moving the tag away from the reader and then moving it closer? Those devices only send it once when it moves into range. There is usually a reset pin on these devices that you can drive if you want it to keep sending while it is in range at a specific interval.

i still find it troubling even tried many arduino codes for implementing my door lock

It's hard to help when you spend more time talking about how you've tried many "codes" and don't follow directions or answer questions from people trying to help.
71  Using Arduino / Programming Questions / Re: Problem with string on Serial.print() method on: August 29, 2013, 12:13:17 am
Doing map from 0-1023 to 0-255 is an awfully inefficient way of shifting right by 2. Also, why bother using String object? Why not just print the number and the print the semicolon?
72  Community / Gigs and Collaborations / Re: Membrane keypad with arduino on: August 28, 2013, 12:41:20 pm
Where are you located? That could affect the availability of various hardware/costs of shipping/etc.

Firstly  I want to make a keypad that will record it's own pressed keys with a time stamp.

Where is this data being record to? SD Card? EEPROM to be retrieved later?

It would need to be portable so it'd have to have it's own power source

How long would it need to be operating without power? Aside from recording the time when a key is pressed, is there anything else it would need to do that might put a drain on its battery?

And if anyone can put this initial stuff together for me and write the code and give me a working prototype to play around with for a while, I would gladly pay.

Are you looking for someone to essentially build/code/case the project and ship it to you, or hook everything up, write the code and send you the plans?
73  Using Arduino / Project Guidance / Re: Using Arduino to share my wifi signal on: August 28, 2013, 12:23:22 pm
Doubt it. You would need an Ethernet and a WiFi shield and probably one of the beefer Arduinos like the Due. Then you would need to understand the concepts and algorithms related to an Ethernet bridge and implement those on the Arduino as I doubt this project has been done before.
74  Community / Gigs and Collaborations / Re: Newbie Help - Temperature sensors on: August 28, 2013, 11:22:42 am
So the circuitry can be attached to the case, next to the LCD readout?

How far will these temperature sensors be placed in relation to the LCD/Circuit board?
75  Using Arduino / Programming Questions / Re: whats wrong in my code ( RFID READING) on: August 28, 2013, 10:55:32 am
iam running out my mind now ,cannot concentrate on programming just searching for a best code to directly implement  it in my project  smiley-cry

So you don't want to actually write the code, you just want to load code and have it work? Perhaps the Gigs and Collaboration section would be a better fit for your post.

If that's not the case, then I would start simple and print out the HEX of any received character to determine what, exactly, is being sent:

if (Serial.available() > 0)
  Serial.print(, HEX);
  Serial.print(' ');

That way, you can look for any start/stop bytes that will help you better parse the incoming data.
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