avrdude -P COM16 -b 19200 -c avrisp -p attiny85 -v -e -U flash:w:rotarydial.hex

avrdude -P COM16 -b 19200 -c avrisp -p attiny85 -U lfuse:w:0xfd:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m