# ATtiny13: Device signature different from expected **URL:** \ **Category:** MicroMod\ **Tags:** avr-atmel\ **Created:** [January 17, 2011, 9:47am UTC](https://community.sparkfun.com/t/attiny13-device-signature-different-from-expected/18963 "2011-01-17T09:47:18Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![mgv\_backinblack](https://avatars.discourse-cdn.com/v4/letter/m/76d3ee/32.png) [@mgv\_backinblack](https://community.sparkfun.com/u/mgv_backinblack)\ **Post date:** [January 17, 2011, 9:47am UTC](https://community.sparkfun.com/t/attiny13-device-signature-different-from-expected/18963/1 "2011-01-17T09:47:18Z")
Hello friends, After almost a year of playing with arduino, i decided to get started with clean avr-s, so i got myself an attiny 13. I do not have a programmer, so I tried to program it using arduino as isp. I installed AVRStudio4, WinAvr, and uploaded the isp sketch to arduino. I wrote the program in AVRStudio, compiled it and got the hex file (i am a beginner in avr, so blinking a led is my first program), wired it as indicated and fired up avrdude. First error: ```auto C:\Users\MGV>avrdude -P com3 -c arduino -p t13 avrdude: stk500_getsync(): not in sync: resp=0x00 ``` Solved by bypassing the baud rate: add -b 57600. So now i know the computer communicates with the programmer. Next one: ```auto C:\Users\MGV>avrdude -P com3 -c arduino -p t13 -b 56700 avrdude: please define PAGEL and BS2 signals in the configuration file for part ATtiny13 avrdude: AVR device initialized and ready to accept instructions avrdude: Device signature = 0x1e950f avrdude: Expected signature for ATtiny13 is 1E 90 07 Double check chip, or use -F to override this check. ``` If I override this check, I obviously get errors (first mismatch at byte 0x0000). Google didn’t gave me any solutions. Please advise: did I managed to destroy it ? Are the fuse bits badly set ? If so, how can this be fixed ? Thank you.