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46  Using Arduino / Sensors / Re: Help me plz zx-color and aduino mega on: August 31, 2011, 11:36:19 am
Looking briefly through the datasheet it looks like the colour data is returned as analog data which needs to be decoded by the ADC on the Arduino. Connect the output pin of the JST connector to the analog pin of your choice and +/GND to the respective pins. Set the jumper to colour mode, not match.

The binary result should correspond to the table on page 3, although reading on through to the code samples you probably could just use the ADC result (eg. 143 to 147 == RED, 83 to 87 == GREEN, 219 to 223 == YELLOW)

Give it a go and let us know what happens!
47  Using Arduino / LEDs and Multiplexing / Re: 2400 LEDs - RGB Matrix on: August 31, 2011, 09:38:21 am
Is that actually 7200 LEDs given that each RGB LED will actually be three LEDs in one part?

Boy, I'm glad I'm not soldering that.
48  Using Arduino / Sensors / Re: Help me plz zx-color and aduino mega on: August 28, 2011, 08:14:47 am
A bit more information for this 'zx color' than just a photo would be smashing.

Do you have an English datasheet for it?
What are you trying to do?
What is a 'zx color'? I presume it is a colour sensor.
What protocol does it use?

More information in general is needed.
49  Using Arduino / Installation & Troubleshooting / Re: Available ram on: August 28, 2011, 07:11:14 am
If only it was my work!

Can't take the credit unfortunately smiley
50  Using Arduino / Installation & Troubleshooting / Re: Available ram on: August 28, 2011, 03:42:15 am
It requires things to be done at runtime I believe - try this link.

When you use too much RAM I have found that random things happen - sometimes it will work, sometimes it won't, sometimes it will just reset itself back to the beginning. Seeing the actual memory in use might be possible win a debugger/simulator, maybe the one within the AVRStudio?


Edit: also check out this post on JeeLabs for a more concise rundown.
51  Using Arduino / Project Guidance / Re: One Arduino Uno, two MAX7221 on: August 28, 2011, 03:27:31 am
Look on page 13 of the datasheet for an example of how to hook it up.

Keep in mind that you should have an equal number of digits on each of the chips to avoid noticeable brightness differences - have five digits on each rather that eight + two.

It looks like the use you are aiming for lends itself neatly to this method anyway, so don't mind me smiley
52  Development / Other Software Development / Re: Arduino .NET library. on: August 11, 2011, 11:38:55 am
Ah OK, that's cool. Do you need a special sketch on the Arduino for it to work?
53  Development / Other Software Development / Re: Arduino .NET library. on: August 10, 2011, 03:43:51 pm
What exactly does it do? Does it connect to the arduino and run commands on it or is it an approximation of the code you'd write for the Arduino?

Have you looked at the .Net Micro framework?
54  Using Arduino / Project Guidance / Re: How to connect multiple 7 segment display to arduino..?? on: August 07, 2011, 10:51:33 am
Look at the MAX7219 - it can control up to 8 individual digits (inc. DP) and you can daisy chain them. Very easy to use, works on SPI. Controllable brightness as well.

You can pick up several very cheaply from eBay.

Here's a link to the datasheet.
55  Using Arduino / Installation & Troubleshooting / Re: Newbie Question: Changing Circuit without damaging the board?! on: August 05, 2011, 05:51:50 am
If you're really worried about it you could upload the blank BareMinimum sketch to the board although unless you have something either very sensitive or very heavy duty connected I'm not sure there'll be a problem.
56  Using Arduino / Programming Questions / Re: please help to compile this code on: August 05, 2011, 05:42:19 am
Thank you for including the error message. It really sped things up.

You can't call a variable word as it is a datatype. Rename it and all the references to it to something like tempWord.

You also need to remove the second closing curly brace from the end of loop() as it is extraneous.
57  Community / Bar Sport / Re: Can I use the Arduino Logo on a pair of earrings? on: August 04, 2011, 06:57:28 pm
So an Arduino tattoo is also out of the question? smiley-wink

I reckon they'd be flattered. Hardcore nerdery though.
58  Community / Bar Sport / Re: (yawn) on: August 04, 2011, 06:56:18 pm
I found most IDEs unnecessarily complicated for most people trying to learn a bit of programming just for fun. Even eclipse is pretty heavy. I want turbo C where you can type up a program and hit compile and run.

I downloaded a copy of Qt Creator a few days ago, and although some parts are a little clunky it's nice to work with, different to the norm. Considering how complex it could be I don't think they've done that bad. Qt is nice to program with as well.
59  Using Arduino / Project Guidance / Re: Twitter Powered Camera on: August 02, 2011, 06:46:10 am
I would definitely take a look at the camera that Adafruit recently started stocking.

They've written a library for it, so all you need to do is plug it in and start looking over the library example sketches to get going. From there you can get it hooked up to the 'net and whatnot.

60  Using Arduino / Microcontrollers / Re: PWM in H-Bridge PSU on: August 01, 2011, 06:45:19 pm
Unfortunately, I don't get to look at attachments (nasty side-effect of being a moderator). 

How bizzare! What's the reasoning behind that - is it something from the forum software?
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