Reply To: Sampling rate for analog input of maxi automation

[Lukas]

Hi,

based on my simple test – just calling analogRead in a loop, you can reach something like 8 kHz.

Code:

void loop() {
// print the results to the Serial Monitor:
Serial.print(“Millis before:”);
Serial.println(millis());

for (int i = 0; i < 1000; i++)
{
// read the analog in value:
sensorValue = analogRead(analogInPin);
}

// print the results to the Serial Monitor:
Serial.print("Millis after:");
Serial.println(millis());

}

If you need to be faster, you have to write your own solution to control the Analog to Digital Converter – please see the ATmega2560 datasheet for more details. ATmega2560 is running at 16 MHz in the CONTROLLINO MAXI Automation.

Best regards,

Lukas