[ADC] Is the board safe for voltages greater than 1.1V?
hello. Nice to meet you.
Please refer to the picture. I am trying to connect 'Arduino Mega' and 'Sensor' as shown in the picture.
We will use 'analogReference(INTERNAL1V1)' to get the low voltage value of the sensor accurately.
Here's the code.
#define V_IN A0
void setup(){
Serial.begin(115200);
pinMode(V_IN, INPUT);
analogReference(INTERNAL1V1);
Serial.println(" SETUP OK!");
}
void loop() {
Serial.println(analogRead(V_IN));
delay(1000);
}
By any chance, what happens when a high voltage of 1.1V comes into 'A0'? Is it a circuit problem? I wonder.
example) If 5V comes into 'A0', is it a circuit problem?
(For reference, it does not matter if the software value is max value.)