Hi I am trying to configure an Atmega328p to run with an 8MHz oscillator in part to reduce power consumption and so I don't need to have level shifters all over my project. I have changed the board.txt file to:
To halve the upload baud rate and halve the CPU speed for the 8Mhz clock. EDIT and used and uno as an ISP to burn the new boot loader to the Atmega328p
When uploading a sketch to the board I select Arduino Pro Mini as the target device as it has a Atmega328 3.3v with a 8Mhz clock but I get the following error message
avrdude: stk500_recv(): programmer is not responding
avrdude: initialization failed, rc=-1
Does anyone know a way around this?