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76  Products / Arduino Due / Re: Offset voltage on Arduino due DAC0 / DAC1 on: July 20, 2013, 12:25:52 pm
Hi,

with statement:

analogWrite(DAC0, 0);

instead of 0 volt output I find 0,540 volt. It seems as an offset voltage.

Is it normal? Is my Arduino damaged?

How I can avoid such offset to obtain output of 0 Volt with input value = 0?

Thank you

Domenico

Yes, that's normal.
77  Products / Arduino Due / Re: how many clock cycles take this code to be executed? on: July 02, 2013, 09:22:34 am
If you exactly want to know how long a piece of code takes, you're better off with asm. Because you never know what a compiler will produce.
78  Products / Arduino Due / Re: reading 3.9v by ADC Arduino due on: June 25, 2013, 11:12:50 am
thank you for your reply ,i want to know also , what happened internally when i connect a voltage more than 3.3v?
what is the value of ADC result register when i connect 3.9v?
The chip could be damaged, and if it would still work, the value would be 4095 (if you're using 12 bits).
79  Products / Arduino Due / Re: DAC voltage on: June 13, 2013, 01:26:03 pm
It's between 1/6 and 5/6 of 3.3v. So it does not start at 0v and does not end at 3.3v
80  Products / Arduino Due / Re: Composite Video Generating on: June 12, 2013, 05:59:07 am
This is so cool, well done!

I would love to see some more information about wiring etc.
Thanks!
It is a r2r ladder (kind of) and a video op-amp (which you can get for free). That's it.
81  Products / Arduino Due / Re: Composite Video Generating on: May 17, 2013, 11:15:54 am
Proof of concept video:

(please subscribe)
82  Products / Arduino Due / Re: Arduino Due micros() resolution on: May 16, 2013, 02:02:15 pm
If you want to have more preciesely timing, you can better use:
Code:
asm("nop");
It's equal to 1/84000000 seconds.
83  Products / Arduino Due / Re: ASF functions inside Arduino ide on: May 15, 2013, 01:43:58 pm
I am new to the world of Arduino (Due). Is it possible to use the functions supported in the ASF but from within the ARDUINO IDE? (i.e without going through Atmel studio)? Is it a matter of moving header files/dependencies or is it much more than that? 
Yes, most functions work. You don't need any headers ofzo.
84  Products / Arduino Due / Re: Fastest single 7 segment display driver on: May 12, 2013, 11:51:30 am
Good work.

Ps. I am dutch too. But when programming I always use english. Dunno why smiley-wink
85  Products / Arduino Due / Re: problem with the programming port on: May 11, 2013, 07:50:55 am
The native port isn't the problem. I can't upload a sketch via the programming port.
Oh, okay. That's weird then.
86  Products / Arduino Due / Re: problem with the programming port on: May 11, 2013, 07:26:23 am
Thank you for your help, but it didn't work. When I connect the due with the native port to my pc it's name is bossa program port when I upload a sketch it's name is Arduino Due. Could it be possible that I have destroyed my arduino?
No, about that 2 ports it's correct. After you upload using the bossac port and press reset, it should work again. Don't forget to choose native port in the arduino ide.
87  Products / Arduino Due / Re: problem with the programming port on: May 11, 2013, 05:59:54 am
Hi,
If i try to upload a sketch to my due via the programming port, the IDE writes "no device found on COM18". But it has already worked. I use windows and I have installed the driver for the board. However when I try to upload a sketch via the native usb port it works. I have also tried it with another pc but there was no difference. How can I fix this problem.

Try connecting using the native usb port. Then press the erase and the reset button at the same time. If everything went well, the bossac port will connect to your pc. You can upload a random sketch with the arduino ide then. After that, press the reset button again. And everything should work again.
88  Products / Arduino Due / Re: Due not detected via USB on: May 11, 2013, 05:59:15 am
I have the same problem, the suggested fix didn't work for me.
No? Are you sure you connected the NATIVE port? (Not the programming one) Did you press the both buttpns correctly at the same time?

Yes, I did exactly as recommended, the board appears not to work.
I played around with it a little using my AVR ISP Mk2 and the chip seems fine (the 16u2) and yet the computer doesn't detect it, the only reason I can see for it not working is if the board is faulty so I'm going to get it swapped for a new one.
That chip is not important! That one will work always. The programming port should be recognized. It's all about the sam3x chip.

Yes I know, the port SHOULD be recognised. If it isn't recognised by the computer AT ALL that must be a faulty board, right?
Yes, if the programming port is still recognized, the solution above works. Otherwise your board is damaged.
89  Products / Arduino Due / Re: Due not detected via USB on: May 11, 2013, 02:14:05 am
I have the same problem, the suggested fix didn't work for me.
No? Are you sure you connected the NATIVE port? (Not the programming one) Did you press the both buttpns correctly at the same time?

Yes, I did exactly as recommended, the board appears not to work.
I played around with it a little using my AVR ISP Mk2 and the chip seems fine (the 16u2) and yet the computer doesn't detect it, the only reason I can see for it not working is if the board is faulty so I'm going to get it swapped for a new one.
That chip is not important! That one will work always. The programming port should be recognized. It's all about the sam3x chip.
90  Products / Arduino Due / Re: Due not detected via USB on: May 10, 2013, 02:03:19 pm
I have the same problem, the suggested fix didn't work for me.
No? Are you sure you connected the NATIVE port? (Not the programming one) Did you press the both buttpns correctly at the same time?
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