reverse beeper

2018-01-05 21:20:00 -08:00
parent 6928f9e50e
commit abeb378b17
4 changed files with 67 additions and 0 deletions
--- a/docs/coding/reverse-beeper-3.md
+++ b/docs/coding/reverse-beeper-3.md
@@ -0,0 +1,21 @@
+# Reverse Beeper Activity 2
+
+```blocks
+let beep = false
+beep = true
+control.runInBackground(function () {
+    motors.largeB.setSpeed(-20)
+    motors.largeC.setSpeed(-20)
+    sensors.ultrasonic4.pauseUntil(UltrasonicSensorEvent.ObjectNear)
+    motors.stopAllMotors()
+    beep = false
+})
+control.runInBackground(function () {
+    while (beep) {
+        if (sensors.ultrasonic4.distance() < 20) {
+            music.playTone(440, sensors.ultrasonic4.distance())
+            loops.pause(50)
+        }
+    }
+})
+```