2 bit DAC
DAC's (Digital to Analog Converters) are how electronics convert binary information to continuous analog signals. When we listen or wat...
DAC's (Digital to Analog Converters) are how electronics convert binary information to continuous analog signals. When we listen or watch digitally stored media such as music or television, we convert the stored ones and zeroes to signals such as amplitude on a headphone cord to hear music or brightness on an LED to watch a show. To see this ourselves, we build a 2-bit DAC that controls the brightness of an LED using the voltage on pins 12 and 13 on the Arduino. The schematic to build the 2-bit DAC is below:
void setup() {
pinMode(12,OUTPUT);
pinMode(13,OUTPUT);
}
void loop() {
delay(1000);
digitalWrite(12,LOW);
digitalWrite(13,LOW);
delay(1000);
digitalWrite(12,HIGH);
digitalWrite(13,LOW);
delay(1000);
digitalWrite(12,LOW);
digitalWrite(13,HIGH);
delay(1000);
digitalWrite(12,HIGH);
digitalWrite(13,HIGH);
}
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