Full sample code

/*
  Roboda verified Arduino sample 0024
  Feature: Roboda Cloud State
  Generated for online build, classroom practice, and hardware upload testing.
*/

const byte batteryPin = A0;

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

void loop() {
  int battery = analogRead(batteryPin);
  Serial.print("{\"sample\":");
  Serial.print(24);
  Serial.print(",\"battery\":");
  Serial.print(battery);
  Serial.println(",\"signal\":\"online\"}");
  delay(80);
}

Teacher notes

• Compile the sample before changing wiring or constants.
• When changing boards, keep the code names the same and update only the pin number constants.
• For 3.3V boards, level-shift 5V sensors and modules before connecting signal pins.
• Use the first compiler error and the Roboda diagnostic suggestion before fixing later warnings.