Stopped working after unplugging and plugging in usb cable

by rayjamesfun on Mon Jun 18, 2012 3:01 pm

Hi there, I just finished building my USBtinyISP and got it to connect fine to Windows 7 Professional. The green light came on and Windows found the driver and it installed the driver with no problems. So, then I went to the "Using the programmer with AVRDUDE" page and copied this command:

Code: Select all | TOGGLE FULL SIZE
avrdude -c usbtiny -p m8


and ran it in the command prompt and got the following:

Image

So, I unplugged the usb cable and plugged it back in and then nothing happened. The green light did not come on and the programmer did not show up as a device in the device manager. I then proceeded to check all solder connections and to check for loose connections or any other signs of trouble and everything checked out fine.

Please advise on what to do next to troubleshoot. Thanks.

INFO:
Windows 7 Professional
I did install jumpers where R4 and R7 were supposed to go.
I did not have a chip plugged into any cables when I hooked it up and ran the above avrdude code.
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Re: Stopped working after unplugging and plugging in usb cable

by adafruit_support_bill on Mon Jun 18, 2012 3:53 pm

Post photos of the front & back of the board and we'll look for any assembly issues.
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Re: Stopped working after unplugging and plugging in usb cable

by rayjamesfun on Mon Jun 18, 2012 4:27 pm

Ok, here you go. Thanks.


Image





Image
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Re: Stopped working after unplugging and plugging in usb cable

by rayjamesfun on Mon Jun 18, 2012 4:48 pm

Ok, solved the problem. I had the red LED backwards. So, I put in a new one the right way and it started working. Yay!

You can delete this post if you like. Thanks.
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Re: Stopped working after unplugging and plugging in usb cable

by adafruit_support_bill on Mon Jun 18, 2012 4:55 pm

Thanks for the follow up. That would have been a hard one to spot. :)
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