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Author Topic: Due appears as COM6 port but gives error "No device found on COM6" on upload  (Read 8709 times)
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I get that Arduino is for the DIY crowd, but it seems off to me that I should have to short a resistor to get it to do what's advertised. If this is a problem with the board, should this not mean fixing the problem and then recalling/replacing the boards?

I keep running into this problem, and unplugging and re-plugging my board seems to fix the issue. But, after doing it 30 times in an hour I'm starting to notice that the usb port is getting a little wiggly. At this rate, no doubt that port is going to fall off.

Admins? Is this a known hardware problem?

Cheers,
Mike
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we change the R23 to 1K, but it didn't work.
Is there anyone solve the problem with this?
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after doing it 30 times in an hour I'm starting to notice that the usb port is getting a little wiggly. At this rate, no doubt that port is going to fall off.

I feared this too, so during development I unplug the other end of my USB cable from the PC to save wear on the Due.
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Unfortunately, because of Apple and all of their wisdom, my usb port is on the back of my computer, make it kind of difficult to access.

Admins / Arduino staff - is this a known problem and, if so, are you going to fix it?

Cheers,
Mike
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Hi all,

The correct value for the R23 resistor is 1k ohm. R23 resistor is used to adapt the 5V logic of the 16u2 to be compatible to the voltage logic of the SAM3x,  the 10k ohm gives completely wrong values to the reset pin.
I want to figure out if it happened a mistake during assembling.

Can I ask to those of you who have experienced the problem to write me the serial number of the Due, you can find on the cardboard box?
You can reply here or write me an email (f.vanzati at arduino.cc)

NB: the serial number is not the number written below the bar code, is on a separate sticker.

Thanks,
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Is there another way to give you the serial number? My wife threw away the box and any associated stickers.

Cheers,
Mike
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Unfortunately there isn't another way to go back to the serial number.
Can you send me a picture and possibly the invoice of the distributor where you purchased the board?

cheers
Federico
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It makes zero sense to put the serial number on the box but not the board. Exactly for this reason.

Greg
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Unfortunately there isn't another way to go back to the serial number.
Can you send me a picture and possibly the invoice of the distributor where you purchased the board?

cheers
Federico

Federico,

This is a bit silly to have to post this, but here we go (see attached).

Cheers,
Mike



* due1.jpg (1457.12 KB, 4608x3456 - viewed 104 times.)

* due2.jpg (1261.21 KB, 4608x3456 - viewed 66 times.)
« Last Edit: September 29, 2013, 10:05:53 am by Federico Vanzati » Logged

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Thank you Mike,
I meant to sent me the things I requested via email to the email I provided in the message above. I'm sorry for not having specified again
I removed the invoice attachment contained in your reply.

We are checking the last batch of Due produced. I'll be able to answer in the coming days
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Thanks Federico,
Mike
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Hi Frederico,

I assume that you know that the Due schematic on http://arduino.cc/en/Main/ArduinoBoardDue has R23 shown as 10K ?
It may be a documentation mistake and not a manufacturing mistake.

How can we get the documentation fixed?
_______
Andrew
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@emech: yes it is a documentation mistake that we can easily fix.

@dezguy: can you please measure the values of these resistors: R3,R14,R15,R21,R23?
See the image in the attachment for the reference.


* DueCheckResistors.JPG (1517.58 KB, 2299x1724 - viewed 137 times.)
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If it's a documentation mistake that can easily be fixed, why hasn't it been fixed? It's two weeks since you acknowledged the error but still no change to the documentation.
Are you trying to ensure that all the Chinese boards don't work properly?
If you are then please think about the many users around the world that buy these boards, myself included.
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Aren't the input capacitors on the original Italian Arduino Due rated for 16V? Then why 25V? Is Arduino producing boards with 25v? My Due board (D00000721) has only the 16V ones. Regards!
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