Friday, December 13, 2013

Adventures in chiptunes part II...

Sorry, I was late. I was busy building the Parasid.

Initial parts layout. The top voltage regulator is a 7805 and the bottom regulator is a 7812.

Power supply filter caps with power feed lines.
Fully built top.
Fully built bottom, excuse the ugliness.
All I need now is to make up an audio cable to output the sound from the SID and build a cable to feed the whole thing data. I'll check back with the results.

Monday, December 9, 2013

Adventures in chiptunes part I...

I found a project that piqued my interest. It is called the parasid. Basically, it is a SID driven by a PC's parallel port. The schematic in the source of inspiration calls for two voltage regulators, a 7805 and an LM317T. The 317 is used to create the 12 volt power supply for the analogue side of the SID and the 7805 creates a 5 volt power supply for the digital side. For the sake of simplicity, I have decided to use a 7812 for the 12 volt supply. Instead of a bunch of resistors in the power supply section, all I need are a few capacitors on the input and output legs of the regulators. I'll post photos tomorrow of the integrated circuits.