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authorCristian Maglie <c.maglie@bug.st>2013-06-01 23:16:02 +0200
committerCristian Maglie <c.maglie@bug.st>2013-06-01 23:16:02 +0200
commit177ad96f866714a4962be57f69cd3d5a6334cde1 (patch)
tree1072239986340d6a239adac924eddf2e1d1ca566 /libraries/Robot_Control/examples/explore/R07_Runaway_Robot
parent6cff36ac5e85c74bcb45cc53491ad69d64520b36 (diff)
parentd90fcca5839d13d57ed527d4009b78d22dafbde7 (diff)
Merge branch 'merge-1.0.5' into ide-1.5.x-discovery
Diffstat (limited to 'libraries/Robot_Control/examples/explore/R07_Runaway_Robot')
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+/* Runaway Robot
+
+ Play tag with your robot! With an ultrasonic
+ distance sensor, it's capable of detecting and avoiding
+ obstacles, never bumping into walls again!
+
+ You'll need to attach an untrasonic range finder to TK1.
+
+ Circuit:
+ * Arduino Robot
+ * US range finder like Maxbotix EZ10, with analog output
+
+ created 1 May 2013
+ by X. Yang
+ modified 12 May 2013
+ by D. Cuartielles
+
+ This example is in the public domain
+ */
+
+// include the robot library
+#include <ArduinoRobot.h>
+
+int sensorPin = TK1; // pin is used by the sensor
+
+void setup() {
+ // initialize the Robot, SD card, and display
+ Serial.begin(9600);
+ Robot.begin();
+ Robot.beginTFT();
+ Robot.beginSD();
+ Robot.displayLogos();
+
+ // draw a face on the LCD screen
+ setFace(true);
+}
+
+void loop() {
+ // If the robot is blocked, turn until free
+ while(getDistance() < 40) { // If an obstacle is less than 20cm away
+ setFace(false); //shows an unhappy face
+ Robot.motorsStop(); // stop the motors
+ delay(1000); // wait for a moment
+ Robot.turn(90); // turn to the right and try again
+ setFace(true); // happy face
+ }
+ // if there are no objects in the way, keep moving
+ Robot.motorsWrite(255, 255);
+ delay(100);
+}
+
+// return the distance in cm
+float getDistance() {
+ // read the value from the sensor
+ int sensorValue = Robot.analogRead(sensorPin);
+ //Convert the sensor input to cm.
+ float distance_cm = sensorValue*1.27;
+ return distance_cm;
+}
+
+// make a happy or sad face
+void setFace(boolean onOff) {
+ if(onOff) {
+ // if true show a happy face
+ Robot.background(0, 0, 255);
+ Robot.setCursor(44, 60);
+ Robot.stroke(0, 255, 0);
+ Robot.setTextSize(4);
+ Robot.print(":)");
+ }else{
+ // if false show an upset face
+ Robot.background(255, 0, 0);
+ Robot.setCursor(44, 60);
+ Robot.stroke(0, 255, 0);
+ Robot.setTextSize(4);
+ Robot.print("X(");
+ }
+}