Actually getting the beats out of the Arduino required the addition of a R2R DAC circuit and a TDA2822 amplifier. In the video after the break, you can hear the results for yourself. [joekutz] is ...

The I65GV25_R2RDAC_01 specifies a 10-bit R2R DAC. At the output side a voltage-mode buffer is used to generate the output voltage and filter out the excess out of band noise.

Although the PSoC has some analog capability, [MiguelVP] uses a cheap R2R DAC and VGA connector to interface to the VGA monitor. You can get the same PSoC board the project uses for about $10.

IGADACT09A is a general-purpose digital-to-analog converter with 12-bit resolution. The sampling rate is up to 5M smples per second. The IGADACT09A is composed of a R-2R resistive ladder and a voltage ...