Yes, your Arduino has ADC and PWM, but if you need a true analog output, you should add analog capability to your Arduino board with the help of an external DAC. The nifty MCP4725 chip could be a ...

Mayhew Labs have unveiled a new DAC add-on board they have created for the Arduino platform in the form of the Extended DAC Shield that takes the form of a high-speed, precision, eight channel ...