more example moving

java/examples/Books/Processing Handbook/Extensions/Electronics/Ex_05A/Ex_05A.pde

@@ -0,0 +1,20 @@
+// Read data from the serial and turns a DC motor on or off according to the value
+char val; // Data received from the serial port
+int motorpin = 0; // Wiring: Connect L293D Pin En1 connected to Pin PWM 0
+// int motorpin = 9; // Arduino: Connect L293D Pin En1 to Pin PWM 9
+
+void setup() {
+  Serial.begin(9600); // Start serial communication at 9600 bps
+}
+
+void loop() {
+  if (Serial.available()) { // If data is available,
+    val = Serial.read(); // read it and store it in val
+  }
+  if (val == 'H') { // If 'H' was received,
+    analogWrite(motorpin, 125); // turn the motor on at medium speed
+  } else { // If 'H' was not received
+    analogWrite(motorpin, 0); // turn the motor off
+  }
+  delay(100); // Wait 100 milliseconds for next reading
+}