So here in this Arduino DAC tutorial, we use an additional board called MCP4725 DAC Module with Arduino. It has a 10-bit DAC in internal ADC but this DAC cannot be used as standalone. Arduino has ADC feature (Analog to Digital Converter) but it has no DAC (Digital to Analog Converter).
But Arduino processors such as ATmega328/ATmega168 don’t have DAC inbuilt. In many microcontrollers there is an internal DAC that can be used to produce analog output. So in this system DAC is used.ĭAC can be used in many applications such as Motor control, Control Brightness of the LED Lights, Audio Amplifier, Video Encoders, Data Acquisition Systems etc. These analog sound waves are converted into digital form and then stored in a digital format file and when the song is played using the stored digital file those digital values are converted into analog signals for speaker output. But what if we need Analog signals from digital values, so here comes the DAC (Digital to Analog Converter).Ī simple example for Digital to Analog converter is recording a song in studio where an artist singer is using microphone and singing a song. That’s why ADC (Analog to Digital Converters) is there to convert real world Analog values into Digital form so that microcontrollers can process the signals. We all know that the Microcontrollers work only with digital values but in real world we have to deal with analog signals.
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