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netduino 2 plus no longer registers via USB

Started by spcboog, Feb 24 2013 12:36 AM

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7 replies to this topic

#1 spcboog

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Posted 24 February 2013 - 12:36 AM

Hi all,

 

I've been using my netduino 2 plus for a couple of months without issue but yesterday when I plugged in the usb cable there was no response. 

 

The device is not registering at all. The same ports/cables work fine with my older netduino plus so I don't think it's the computer/ports/cables. The PWR led lights up, but the blue led does not light up at all.

 

Any ideas? 

 

thanks

 


#2 Giuliano

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Posted 24 February 2013 - 01:00 AM

HI spcboog,

 

Try unplugging the N+2 from your PC, then removing the driver and then plug it back in. This time make sure you select the have disk option. You have to install the MFUSB drivers for it.

 

The URL below explain how:

 

http://forums.netdui...-mfusb-drivers/


Solo sé que no sé nada

#3 spcboog

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Posted 24 February 2013 - 02:10 AM

HI spcboog,

 

Try unplugging the N+2 from your PC, then removing the driver and then plug it back in. This time make sure you select the have disk option. You have to install the MFUSB drivers for it.

 

The URL below explain how:

 

http://forums.netdui...-mfusb-drivers/

 

Hi Giuliano,

 

Thanks for the suggestion but the device is not registering at all, it's not coming up as an unknown device or anything else. If I power it up externally, the existing program doesn't seem to be running either. Is there a definitive way of telling whether the board is dead?

 

thanks


#4 Giuliano

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Posted 24 February 2013 - 07:20 PM

Is your Netduino Plus being recognized using the same USB port in your PC?

 

Have you tried plugging you N+2 in in another PC?

 

Can you anybody else please suggest spcboog what he can try to make sure his board is fine?


Solo sé que no sé nada

#5 NooM

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Posted 24 February 2013 - 07:25 PM

what did you do before it stopped working?

 

i dont believe that a working duino stops working w/o you doing something.

:rolleyes:

 

that will help narrow down the error (call me pessimistic, but not getting recognized sounds very bad)


My PlayGround and some Code

#6 Chris Walker

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Posted 24 February 2013 - 10:27 PM

Hi spcboog, If you hold down the pushbutton on your Netduino Plus 2 while plugging it into your PC, does the blue LED light up? Does it show up in recovery mode (as an "ST" device) in Device Manager? Chris

#7 spcboog

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Posted 25 February 2013 - 09:36 AM

Hi Giuliano, Noom, Chris, thanks for your advice.

 

The weird thing is that after trying a bunch of times unsuccessfully, it seems to have come back alive again. With the Netduino Plus 2 plugged in, the ONLY thing I did was go into Win7 Device Manager and enable the 'Show hidden devices' option. I wanted to enable that option so that I could uninstall the driver. When I searched through the devices with that option on, nothing showed up in any of the categories. I closed the device manager and left my computer.

 

When I came back to my computer a little while later, the window for Control PanelHardware and SoundDevices and Printers happened to be open. To my surprise, I could see the Netduino Plus 2 under 'unspecified'. I thought maybe it was just to do with my 'Show hidden devices' adjustment, but then why wasn't my older Netduino Plus showing up? Sure enough the Netduino Plus 2 was back for real. I tried deploying and debugging a basic program and it seemed fine.

 

Giuliano, I really did try all the ports/cables combinations that were working for my Netduino Plus. So I have no idea why it just magically started working again. Noom, when it stopped working I was just iterating through different adjustments in software for a balance bot, I did think maybe I fried something even though I didn't see how I would have done so. Chris, when it wasn't working I did try forcing the bootloader mode with the button press but the device did not show up and the blue led did not light up.

 

Anyhow thanks everyone for the info. After the Netduino plus came back alive I was handling it wondering what the heck happened and was holding the bottom of the board and noticed it was quite warm. Currently it is plugged into USB but idle and it still seems warm. Is this normal?

 

thanks


#8 Chris Walker

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Posted 25 February 2013 - 11:00 AM

spcboog, the mystery deepens :)

Anyhow thanks everyone for the info. After the Netduino plus came back alive I was handling it wondering what the heck happened and was holding the bottom of the board and noticed it was quite warm. Currently it is plugged into USB but idle and it still seems warm. Is this normal?

Netduino won't get very warm unless you have something plugged into it. Both Netduino Plus and Netduino Plus 2 may feel a tiny bit warm while running due to the multiple processors on board...but neither should be uncomfortably hot (i.e. not burning your fingers). If the microcontroller is ever hot enough that you feel like you might burn your fingers...you know that the board has been fried. You can do this by plugging your board into a 24V power supply for instance. Don't ask me how I know that one :D Chris
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