avrdude: usbdev_open(): did not find any USB device "usb"

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eschneider777
 
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avrdude: usbdev_open(): did not find any USB device "usb"

Post by eschneider777 »

No animation, power light on. I'm pretty sure the wiring is correct. And code. I get this message below:
Binary sketch size: 1,872 bytes (of a 5,310 byte maximum)
avrdude: usbdev_open(): did not find any USB device "usb"

Also my windows does recognize it as Trinket.

Not sure about the orientation on the LED matrix, I search everywhere but see no indications which way it goes. I know LED's are polarity sensitive. Does it matter?

Thanks,
Eric

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adafruit_support_mike
 
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Re: avrdude: usbdev_open(): did not find any USB device "usb

Post by adafruit_support_mike »

Post a photo of your hardware and connections, and the code you're using (between CODE tags please) and we'll take a look.

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eschneider777
 
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Re: avrdude: usbdev_open(): did not find any USB device "usb

Post by eschneider777 »

I'm using the example code, unchanged.
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adafruit_support_mike
 
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Re: avrdude: usbdev_open(): did not find any USB device "usb

Post by adafruit_support_mike »

Your connections look good.

Do you have 'USBtinyISP' selected under the Tools->Programmer menu, and are you pressing the Trinket's Reset button about the same time as you click the button to compile and upload code in the Arduino IDE?

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eschneider777
 
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Re: avrdude: usbdev_open(): did not find any USB device "usb

Post by eschneider777 »

That was it!

Was that in the directions?, don't remember seeing that...

Thanks,
Eric

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adafruit_support_mike
 
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Re: avrdude: usbdev_open(): did not find any USB device "usb

Post by adafruit_support_mike »

Yep.. toward the bottom of this page:

https://learn.adafruit.com/introducing- ... rduino-ide

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eschneider777
 
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Re: avrdude: usbdev_open(): did not find any USB device "usb

Post by eschneider777 »

yep, I see it.

I skimmed through pretty quick, man there's a lot of directions for this stuff.

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adafruit_support_mike
 
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Re: avrdude: usbdev_open(): did not find any USB device "usb

Post by adafruit_support_mike »

Wait 'til you see the datasheet:
http://www.atmel.com/Images/Atmel-2586- ... asheet.pdf

;-)

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