[Solved]attiny85 timing clock incorrect

following exactly from this page :http: //highlowtech.org/?p=1695

works, but the testing led blinking example flashed the led at more than 1 second, very long time interval. I think the clock or timer is wrong.

Did you do the Burn Bootloader step? If not the ATtiny is probably still set for the factory default speed of 1 MHz (8 MHz internal clock and prescale of 8). Your cycle time would then be eight seconds instead of one.

johnwasser:
Did you do the Burn Bootloader step? If not the ATtiny is probably still set for the factory default speed of 1 MHz (8 MHz internal clock and prescale of 8). Your cycle time would then be eight seconds instead of one.

didn't burn the Bootloader , but I tested it with 1mhz and 8mhz board options.

johnwasser:
Did you do the Burn Bootloader step? If not the ATtiny is probably still set for the factory default speed of 1 MHz (8 MHz internal clock and prescale of 8). Your cycle time would then be eight seconds instead of one.

thanks. burning bootloader with different clock speed board will set the time correctly for that speed board.