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[on:]

Hi guys, new here, and new to the Arduino as well.

I've hit a snag trying to use my Arduino Uno to program a ATtiny85 chip with a simple "blink" program. I'm following this tutorial.
http://hlt.media.mit.edu/?p=1695

I've loaded the Uno with the ISP sketch and hooked up everything correctly to the ATtiny85 as far as I can tell. As I understand it the 1.0 software requires the ATtiny85's fuse bits to be configured from 1MHz to 8MHz so the SoftwareSerial library with work with the chip. But when I hit "burn bootloader" (with "ATtny85 internal 8MHz clock" selected as board) I get an error message "avrdude: usbdev_open(): did not find any USB device "usb"".

Any ideas why it's not communicating with the chip?

I apologies if this is a common or trivial question, but a search came up dry.
Thanks.

-Tony

[Reply #1 on:]

Click Tools then Programmer then Arduino as ISP.  Try again to burn the bootloader.

An alternative to the HLT core...
http://code.google.com/p/arduino-tiny/

[Reply #2 on:]

Ha, I knew it must have been something trivial I missed.
Thank you!

[Reply #3 on:]

Yes, awesome. I thank you as well!  Cheers.

[Reply #4 on:]

Hi, i just started playing with arduino uno not long ago.. recently i got a few attiny85 and successfully load the basic "blinking" onto it (follow the steps on MIT web)... then i started to do some research of more attiny projects, i notice some say "bootloader" attiny85 to 8Mz. so i tried to do it. after i set it up (attiny85 8Mz,arduino as ISP), i click " burn bootloader", i got a message on arduino IDE that the bootloader burning failed.. now i can't load anything to attiny85 anymore.. i have tried switch back to 1Mz, only get message on arduino IDE

             "stk500_getsync(): not in sync: resp=0x00"

however, i can still load sketches to my arduino. only programme attiny doesn't work. can someone help?
thanks!

[Reply #5 on:]

The most likely culprit is wiring.  Ensure the wiring is correct.  Try different jumpers in case one (or more) is defective.

[Reply #6 on:]

i will give it another try. although i probably already rewired them 50 times..
will keep you posted, thank you mr badly.

[Reply #7 on:]

i got it!

after i rewired the board and restarted the IDE, uninstalled and reinstalled the programme many times.. i re-read the instruction in MIT high-low tech website and only realize i  forgot to upload the ISPsketch to my uno board first...

had i understand the concept before going thru the instruction steps, i would know to programme my uno before uno programmes the tiny..

thanks for help.