\/\/ SR will be .25 seconds<\/p>\n
const int sr = 250; \/\/ sample rate in ms??
\n\/\/ const int setdist = 256; \/\/ Distance to travel per sample
\nconst int le = 40; \/\/ Low end of travel
\nconst int he = 100; \/\/ High end of travel
\nint dir = 1; \/\/ 1 is clockwise -1 is counterclockwise
\nconst int SENSOR_PIN = 0; \/\/ Pin for ribbon
\nconst int LED_PIN = 12; \/\/ LED pin location
\n\/\/ const int forgiveness = 2; \/\/ 2 samples forgiveness
\nbool flowing = false;
\nbool prevFlow = false;
\nint prevRead = 0;<\/p>\n
void setup() {
\n\/\/ put your setup code here, to run once:
\nSerial.begin(9600);
\npinMode( LED_PIN, OUTPUT );
\n}<\/p>\n
void loop() {
\n\/\/ put your main code here, to run repeatedly:
\nint sensorVal = analogRead( SENSOR_PIN );
\nint sensDelta = sensorVal – prevRead;<\/p>\n
prevRead = sensorVal;<\/p>\n
if ( sensDelta != 0 ) {
\n\/\/Serial.print(“Val: “);
\n\/\/Serial.println( sensorVal );
\nSerial.print(“Delta: “);
\nSerial.println( sensDelta );<\/p>\n
if ( ( sensDelta > le ) && ( sensDelta < he ) ) {
\nflowing = true;
\nSerial.println( “Flow detected” );
\n}<\/p>\n
if ( !( ( prevFlow == true ) || ( flowing == true ) ) ) {
\nSerial.println( “oops” );
\ndigitalWrite( LED_PIN, LOW );
\n}
\nelse {
\ndigitalWrite( LED_PIN, HIGH );
\n}<\/p>\n
prevFlow = flowing;
\nflowing = false;
\n}
\nelse {
\ndigitalWrite( LED_PIN, LOW );
\n}<\/p>\n
delay( sr );
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
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