This module came from a desire to play audio from a pic. The idea was an I2C EEPROM would hold a .WAV file that had been converted into an intel .HEX file. The pic would retrieve a sample from the EEPROM, place it onto its 8 bit B port, and be converted into an analog signal via an R2R DAC (I did not have any commercial DAC chips at the time). This signal would then be fed into an audio amplifier and there would sound. needless to say, this circuit can take up a lot of breadboard space and can be a pain to wire up in a small space (or to wire up more than once...) so I built this module to simplify circuit building any time I want to use an 8 bit parallel DAC.
The circuit:
A picture of the module:
a picture of the circuit that convinced me to build this module:
