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1111  Development / Other Hardware Development / Re: Introducing the TouCan, Due work-alike on: June 16, 2013, 01:21:19 am
The 8 digital IOs can now be individually set to 5v or 3v3.

The circuit was a no-brainer as they all have individual level converters anyway, fitting the headers was the hard part smiley
Nice, makes it more versatile.
For me the lack of 5v pins is the biggest failing of the Duo, I have loads of 5v components, very few 3.3v. And with your ideas it's now be easy to mix and match. Shame someone does not produce a Duo shield with pin by pin level shifters.
1112  Using Arduino / LEDs and Multiplexing / Re: Controlling 8 rgb leds common anode on: June 16, 2013, 01:09:28 am
You can get the WS2803 from eBay without problem (it's where I bought mine). One thing I forgot to mention about the WS2803 is it's capable of doing PWM so you don't need to use PWM pins on the arduino.
I don't think the UDN2982A is really suitable, because it's a source driver it would be connected to the anode and not the cathode. Other may have different ideas.
1113  Using Arduino / Project Guidance / Re: Controlling an ILX511 Linear CCD Sensor on: June 15, 2013, 11:02:37 am
Hi Bumpasticka,

I laid out the hardware again as the old board was a bodge and also used a faster transistor for amplifying Vout and I am starting to get something now. The CCD is very sensitive to light so after applying an electrical tape mask and working in a dim room I managed to get an output.
First is covering the entire CCD with my finger and as expected the trace is flat but I am getting the dummy pixels before and maybe after (harder to see) the effective pixels.
The second picture is with my finger hovering over the middle of the CCD. It's not as good as expected as I think the setup is in need of a lens to focus light and mask off stray ambient light.
1114  Using Arduino / LEDs and Multiplexing / Re: Controlling 8 rgb leds common anode on: June 15, 2013, 06:23:09 am
The WS2801 or WS2803 work with common anode.
1115  Community / Bar Sport / Re: Nick the Moving Company on: June 15, 2013, 05:51:32 am
No matter what you say (in the title, FAQ etc.), not everyone reads it.
Wouldn't it be nice if new sign-ups had to tic a box in their profile to allow them to post messages and the only place you find this out is in the sticky.
1116  Using Arduino / Microcontrollers / Re: Struggeling to reduce power consumption's to a minimum on: June 15, 2013, 02:56:52 am
Nick Gammon has done quite concise article on power saving here
1117  Using Arduino / Sensors / Re: Weather Station on: June 15, 2013, 02:05:23 am
The sensor is described in this pdf. The chip looks like it's an amplifier.
1118  Development / Other Hardware Development / Re: Introducing the TouCan, Due work-alike on: June 14, 2013, 10:43:14 am
The jumper to select 3.3V/5V digital effects all ports or per port basis?
1119  Using Arduino / General Electronics / Re: arduino interrupt on: June 14, 2013, 07:59:53 am
Can you supply more details on what sensors your using and how they are wired to the arduino and posting the code (between # code tags) will help.
1120  Using Arduino / Installation & Troubleshooting / Re: Compilation became incredibly slow on: June 14, 2013, 07:28:17 am
If you download a fresh copy of the Arduino IDE (the ZIP version not the windows installer version) and extract it to a different folder name to your current one and then load/compile a sketch from this fresh copy does it make a difference?

Quote
Java is SUCH a pain. My bank and other things won't work without it. GGrrr....
Does it need Java console or JavaScript? My bank needs JavaScript to work but not the Java console.
1121  Using Arduino / Installation & Troubleshooting / Re: Noob - Serial Port Issue. on: June 14, 2013, 05:31:02 am
My Arduino didn't come with a cable at all. Where did you get yours from?
The OP said from this site so I assume the store and this starter kit.
1122  Using Arduino / General Electronics / Re: RS232 Serial Communication with a digital multimeter on: June 14, 2013, 03:37:04 am
http://www.robotshop.com/adaptateur-rs232-ttl-dfrobot.html      Will this do the trick ? (sorry it's in french !)
Yes that will allow you to safely connect RS232 to the Arduino serial ports but why use something like that when with something like this you can connect it directly to the PC (assuming your PC does NOT have standard serial port)
Hopefully your Mega is not damaged.
1123  Using Arduino / General Electronics / Re: RS232 Serial Communication with a digital multimeter on: June 14, 2013, 02:07:14 am
The serial ports on your Mega are TTL level (0-5 volts) and standard RS232 for connection to the PC can be -12V to +12V. Some serial uses lower voltages like -5 to +5 but the point is you will damage the Mega by feeding <0 or >5V to the pins. You need a RS232 to TTL converter or bypass the Mega all together and plug it into the PC.
1124  Using Arduino / General Electronics / Re: arduino interrupt on: June 14, 2013, 01:53:22 am
What is supplying the interrupt signal to the arduino and how is it wired? Maybe a pullup/pulldown is needed to stop EM noise from triggering interrupt.
1125  Using Arduino / Installation & Troubleshooting / Re: Compilation became incredibly slow on: June 14, 2013, 01:15:02 am
You are using the java that is bundled with the IDE.

I don't think that is the cause of your problem.

I know that doesn't help much, but at least you can rule that out.
But does updating java scan for old files on the PC to update them so you could be using the bundled java but it's internal .dll/libraries have been "adjusted".
I personally don't have this problem (and never had) but several posts I have seen seem to point to either AV software or Java updates. I don't have java console installed on my PC as it's such a security risk.
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