Will scroll them from right to left, speed varying on the variable resistor on board( trim pot).
/* Proverbial (4) Led Blink Program Scrolls 4 light emitting diodes(LED), by turning on and off connected to 4 different digital pins, using the delay() function and the current millis alike :) . The circuit: * 4 LED's on board - pins D11, D12, D13 and D14 ** Variable resistor/trimpot on A2 *** Version done for the chipKit board DP32 ** **** http://dubworks.blogspot.co.uk/ */ // constants won't change. Used here to // set pin numbers: const int ledPin = 11; // the number of the LED pin const int ledPin1 = 12; const int ledPin2 = 13; const int ledPin3 = 14; int i; // Variables will change: int ledState = LOW; // ledState used to set the LED int ledState1 = LOW; int ledState2 = LOW; int ledState3 = LOW; long previousMillis = 0; // will store last time LED was updated // the follow variables is a long because the time, measured in miliseconds, // will quickly become a bigger number than can be stored in an int. //long interval = 500; // interval at which to blink (milliseconds) void setup() { // set the digital pin as output: pinMode(ledPin, OUTPUT); pinMode(ledPin1, OUTPUT); pinMode(ledPin2, OUTPUT); pinMode(ledPin3, OUTPUT); pinMode(A2, INPUT); ledState = !ledState; //Toggle the bits to start ledState1 = !ledState1; ledState2 = !ledState2; ledState3 = !ledState3; } void loop() { boolean b; long interval = analogRead(A2); // interval at which to enter function.(milliseconds) interval= interval/3; //So it is not too slow digitalWrite(ledPin, ledState); digitalWrite(ledPin1, ledState1); digitalWrite(ledPin2, ledState2); digitalWrite(ledPin3, ledState3); // // check to see if it's time unsigned long currentMillis = millis(); if(currentMillis - previousMillis > interval) { // save the last time previousMillis = currentMillis; // int var; var=interval-(currentMillis - previousMillis); // conditional depending on increment accumulator if(!b){ switch (i) { case 0 : ledState = !ledState; digitalWrite(ledPin, ledState); delay((var*0.5)); break; case 1 : ledState1 = !ledState1; digitalWrite(ledPin1, ledState1); delay((var)); break; case 2 : ledState2 = !ledState2; digitalWrite(ledPin2, ledState2); delay((var*1.5)); break; case 3 : ledState3 = !ledState3; digitalWrite(ledPin3, ledState3); delay((var*2)); break; default: b=!b; break; } } else{ switch (i) { case 0 : ledState = !ledState; digitalWrite(ledPin, ledState); delay((var*2.5)); break; case 1 : ledState1 = !ledState1; digitalWrite(ledPin1, ledState1); delay((var*3)); break; case 2 : ledState2 = !ledState2; digitalWrite(ledPin2, ledState2); delay((var*3.5)); break; case 3 : ledState3 = !ledState3; digitalWrite(ledPin3, ledState3); delay((var*4)); break; default: b=!b; break; } } i++; // Increment our accumulator i=i%5; // Keep the value within the parameters needed for our switch case // in this case 5, so we can have 4 + 1 // (0, 1, 2 and 3) + 1 for default toggling of boolean variable b. (aesthetic reasons ?!) } }
