Example Code for Arduino-GPIO Analog Read

Hardware Preparation

• DFR1188 Beetle RP2350 ×1
• DFR0054 Gravity: Analog Angle Sensor Rotation Sensor ×1

Wiring Diagram

Sample Code

const int analogInPin = A1;  
int sensorValue = 0;        

void setup() {
  Serial.begin(9600);
}

void loop() {
  sensorValue = analogRead(analogInPin);
  Serial.println("sensor = ");
  Serial.println(sensorValue);
  delay(200);
}

Result

Open the serial monitor, you can see the window prints the current value of the angle sensor. Rotate the angle sensor, and the printed value changes accordingly.

Additional Information

ADC (Analog-to-Digital Converter, also known as A/D converter), is a way to convert analog signals into digital signals. Real-world analog signals, such as temperature, pressure, sound or images, etc., need to be converted into a more easily stored, processed and transmitted digital form. The ADC of Beetle RP2350 is 10-bit, with a maximum output value of 1023.