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Step 4Program the Chip Part 1: Fuses
"Fuses" are a very small part of the microcontroller's memory that tell it how to operate, such as which oscillator to use, enabling the reset pin, and so on. Will will need to change the fuses to run off of an external oscillator. I used http://www.engbedded.com/fusecalc, which is a free AVR fuse calculator. I included images of this, but you don't need to use the calculator because I listed the commands here.
I use AVRdude to interface between the programmer and my computer. A tutorial on how to use AVRdude can be found here.
If you are using an oscillator, use
Avrdude -c usbtiny -p attiny85 -U lfuse:w:0xfe:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
If you are not, use
Avrdude -c usbtiny -p attiny85 -U lfuse:w:0xe2:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
Proceed to the next step for programming the real code!
I use AVRdude to interface between the programmer and my computer. A tutorial on how to use AVRdude can be found here.
If you are using an oscillator, use
Avrdude -c usbtiny -p attiny85 -U lfuse:w:0xfe:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
If you are not, use
Avrdude -c usbtiny -p attiny85 -U lfuse:w:0xe2:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m
Proceed to the next step for programming the real code!
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