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March 29, 2014 AT 10:00 pm

Playing Chiptunes with an Arduino Micro! #ArduinoD14

Verspira uses an arduino micro to play ‘Last Chip Standing’ by Chewrafa, from the arduino blog.

All audio generated on the Arduino. If you look closely, you will see that I added a yellow wire going from the TXLED to the empty hole that was drilled over by the reset button. I added a single pin though this hole and epoxied the plastic in place to give myself another bread-boardable pin that has access to the PD5 signal which was not broken out. Simple mod really.

Original code by Jarkko Lempiäinen.
See this video for code links: http://www.youtube.com/watch?v=XZfw7l…

Track: ‘Last Chip Standing’ by Chewrafa.
See this video for higher quality audio: http://www.youtube.com/watch?v=vPKri-…

The audio probably suffers a bit from my DAC since the resistors were 5% tolerance and I did my best to hand-match them down to 0.1%. I’m looking to get a real 8bit DAC and put it on this Arduino to see if there are any improvements.

All audio from the Arduino, with an LM386 amplifier on the receiving end of my R-2R DAC. Resistances were 10K and 20K (actual 9.85K and 19.70K).

Read more.


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