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Fuse (and Lock) Bits are a type of low level programming and security feature on embedded devices. Most popularly known in Atmel AVR devices, they can be likened to a secure Bios on a computer. They can also be found in MSP430, PIC, and other microcontrollers. Care needs to be taken when working with programming Fuse Bits, as they can render a device useless. MANY are One Time Programmable.

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How do I set the clock speed fuses on an ATtiny85 when using an Arduino as a programmer?

I'm following this tutorial, programming the ATtiny85 with an Arduino, using it to play some tones (through a piezo speaker). I'm struggling with getting the tones at the right pitch (I'm creating the …
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