Help with multiple knock Sensors across 4 Analog pins...

Projects Programming
18

UKHeliBob:
So, if analogRead() returns say 1012, how is that transmitted ?

Previously, when doing a similar thing with potentiometers, when the serial monitor read 1012, that was the value received into Pure Data - I'll be perfectly honest and say I don't understand the mechanics of getting that information between the two, other than having a very basic understanding of a serial port.

I have had a fiddle with the code and managed to split it into the 4 separate data paths but each time I try and add some kind of threshold for each analogRead, it's all errors...

If the sensor reading has to reach a threshold before it triggers a knock!, I think that will resolve the issue of which sensor is being triggered at any given time.

int knockSensor = A0;
int AnalogVal = 0; 
int knockSensor2 = A1;
int AnalogVal2 = 0; 
int knockSensor3 = A2;
int AnalogVal3 = 0; 
int knockSensor4 = A3;
int AnalogVal4 = 0; 

void setup() //
{
  
  Serial.begin(115200); 
}
void loop () 
{
  AnalogVal = analogRead(knockSensor); 
  AnalogVal2 = analogRead(knockSensor);
  AnalogVal3 = analogRead(knockSensor); 
  AnalogVal4 = analogRead(knockSensor);

  Serial.print(AnalogVal); 
  Serial.print("knock!"); 
  Serial.print(AnalogVal2); 
  Serial.print("knock!"); 
  Serial.print(AnalogVal3); 
  Serial.print("knock!"); 
  Serial.print(AnalogVal4); 
  Serial.print("knock!"); 

  Serial.print("knock!"); 
  Serial.println(); 
  delay(100); //
}