Uploaded February 2012 | Updated September 2026, 2 weeks ago

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FightCube.com

Code and schematics found here:
elm-chan.org/works/sd8p/report.html

Try these audio files.. they are the same ones I used.

MacGyver Theme Song (this is not the one I used, but if it works for you please let me know)
dl.dropboxusercontent.com/u/41117656/macgyver.wav

Also, I had a clamping diode on the output to ground and +5V, and a 100uF electrolytic in series with a 16 ohm speaker.

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Special version of the OC build that has no fuses in it: dl.dropboxusercontent.com/u/41117656/sd8p_oc_no_fuses.zip

Program this with Avrdude and a USBtiny compatible programmer like Sparkfun's Tiny or Pocket AVR programmer with this command:
avrdude -c usbtiny -p t85 -U flash:w:sd8p_oc_no_fuses.hex -U lfuse:w:0xe1:m -U hfuse:w:0x7d:m -U efuse:w:0xff:m