so i have arduino uno r3 and few atmega8l-8pu and i need to program these using the arduino i have searched throughout the internet but no luck and i have tried many methods but i get the error message of yikes! invalid device signature not sure why even when i have checked my connections
how can i get the bootloader on the atmega8l-8pu?
Depending on what was the signature. Zero or nonsense signature points to the problem with wiring or generally with connection with high probability. If signature is different from configuration, but fits for the MCU, just update the configuration.
I guess you want to install the Optiboot bottloader on the Atmega8. It got faster upload speed and only takes up 512 bytes. Extract the attached ZIP-file, and put the folder in the directory ~/User/Documents/Arduino/hardware
Open Arduino IDE 1.6 (the attached file only works with 1.6 or newer), and chose the "ATmega8 @ 16 MHz external oscillator [Optiboot]" board in the menu. Choose a programmer, and click "Butn bootloader
Mega8.zip (542 KB)
hansibull:
Open Arduino IDE 1.6 (the attached file only works with 1.6 or newer), and chose the "ATmega8 @ 16 MHz external oscillator [Optiboot]" board in the menu. Choose a programmer, and click "Butn bootloader
The atmega8L only runs to 8MHz. So this will need to be modified for 8MHz support.