In the Arduino Uno - pins 3,5,6,9,10,11 have PWM capability. Pin 13 of the Arduino Uno is connected to the built-in LED. Pins 0-13 of the Arduino Uno serve as digital input/output pins. This goes through the device’s ADC, gets converted into digital data, which is transmitted to the receiving side over the internet. Every smartphone has a microphone that converts sound waves (voice) into analog voltage. One common example of an ADC is Voice over IP (VoIP). The ADC converts voltage into bits which the microprocessor can understand. On Arduino the ADC has 10-bit resolution, meaning it can represent analog voltage by 1,024 digital levels. This digital representation of analog signals allows the processor (which is a digital device) to measure the analog signal and use it through its operation.Īrduino Pins A0-A5 are capable of reading analog voltages. ADC is an electronic circuit used to convert analog signals into digital signals. Analog to Digital ConversionĪDC stands for Analog to Digital Converter. These pins serve as analog inputs but can also function as digital inputs or digital outputs. The Arduino Uno has 6 analog pins, which utilize ADC (Analog to Digital converter). It provides the voltage reference with which the microcontroller operates.
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