BlinkPWM_loop_3inputs pulses an LED from Min (0) to Max (255) and bac…

…k again, repeatedly. Speed controlled by 3 inputs.

BlinkPWM_loop_3inputs pulses an LED from Min (0) to Max (255) and back
again, repeatedly. Speed controlled by 3 inputs.

BlinkPWM_loop_3inputs/BlinkPWM_loop_3inputs.ino

@@ -0,0 +1,35 @@
+/*
+  BlinkPWM_loop_3inputs pulses an LED from Min (0) to Max (255) 
+  and back again, repeatedly. Speed controlled by 3 inputs.
+ */
+
+int led = 5;          // name our PWM pin:
+int time_delay = 8;   // set time delay (mS) duration here
+int input_value = 1;  // set our initial input value
+
+void setup() {                
+  pinMode(led, OUTPUT);  // set pin as output
+  for (int thisPin = 6; thisPin < 9; thisPin++) {
+    pinMode(thisPin, INPUT); // set pins 6-8 as inputs
+  }
+}
+
+void loop() {
+   time_delay = 8;                         // set default delay
+   for (int thisPin = 6; thisPin < 9; thisPin++) { 
+      input_value = digitalRead(thisPin);  // read input pin
+      if (input_value == 1) {              // if it's HIGH
+         time_delay /= 2;                  // set delay to half
+      }   
+   }    
+               // fade led pin from off (0) to brightest (255)
+   for (int brightness = 0; brightness < 255; brightness++) {
+      analogWrite(led, brightness);
+      delay(time_delay);
+   } 
+               // fade led pin from brightest (255) to off (0)
+   for (int brightness = 255; brightness >= 0; brightness--) {
+      analogWrite(led, brightness);
+      delay(time_delay);
+   } 
+}