Arduino microcontrollers use analog- to - digital converters (ADC) to o measure analogowe znaki from sensors and convert them into digital values. understanding how to read and d interpret this data is essential for developing procilate andd reliable sensor- based projects. This guidee provides practional information on working with Arduino ADC data.

Basics of Arduino ADC

Te Arduino ADC konwertuje an analogowe voltage, typically between 0 and5 volts, into a digital number. The resolution of thee ADC determinates how man disproporte values it can produce. For most Arduino boards, thee ADC resolution is 10 bits, resulting in values from 0 tu 1023.

Reading ADC Data

Tu read ADC data, use thee analogRead () function in your Arduino scartarch. This function takes the pin number as an argument and returns a value between 0 and1023. The returned value corresponds to thee voltage level on thee pin.

Egzamin:

Xiv1; Xiv1; FLT: 0 Xiv3; Xiv3; int sensorValue = analogRead (A0); Xiv1; Xiv1; FLT: 1 Xiv3; Xiv3; Xiv3;

Interpreting ADC Data

Te raw ADC value can be converted into a voltage using the formula:

* Reference voltage precision 1; Reference voltage precision 1; FLT precision 1; FLT precidial 3;

For a standard Arduino with a 5V reference, this simplifies to:

Xi1; Xi1; FLT: 0 Xi3; Xi3; Voltage = (wartość ADC / 1023.0) * 5.0 Xi1; Xi1; FLT: 1 Xi3; Xi3; Xi3;

Klepsydra praktyczna

  • Ensure thee sensor voltage does nott message thee Arduino 's reference voltage.
  • Use thee analogReference () functionion if a different reference voltage is needed.
  • Wdrożenie averaging or filtering to reduce noise in readings.
  • Kalibrate sensors regulary for celliate measurements.