![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/Analogue-ultrasonic-sensor-1.png\")
<\/figure>\n\n\n\nNow get two small pieces of Blu Tack or similar and stick the sensor to the back of the Kookaberry’s handle as shown below.<\/p>\n\n\n\n![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/IMG_5203-768x1024.jpg\")
<\/figure><\/li>![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/IMG_5204-768x1024.jpg\")
<\/figure><\/li>![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/IMG_5205-768x1024.jpg\")
<\/figure><\/li><\/ul><\/figure>\n\n\n\n![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/IMG_5206-768x1024.jpg\")
<\/figure><\/div>\n\n\n\nAfter sticking the sensor to the back of the Kookaberry, connect the DC fan module to P2.<\/p>\n\n\n\n
Step2: Running the App<\/h4>\n\n\n\n
Hold the fan away from any obstacle (particularly your fingers!) as it will start spinning as soon as you press Button B unless the screen shows STOP! and P2 is Off.<\/p>\n\n\n\n
This, of course, is the object of the demonstration – when the sensor detects an obstacle at or nearer the target distance it will stop the motor.<\/p>\n\n\n\n
Tip: Stick the fan to the edge of a desk with Blu Tack<\/em><\/p>\n\n\n\nNow navigate to the CloseToMe app in the Kookaberry menu and press Button B to run. <\/p>\n\n\n\n
<\/p>\n\n\n\n
These three screen shots are what you see when you move the sensor (now attached to the back of the Kookaberry) closer to an object – eg a tabletop. It shows a series of evermore urgent instructions as you get closer to the target.<\/p>\n\n\n\n![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/go-1024x551.png\")
<\/figure><\/li>![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/slow-1024x536.png\")
<\/figure><\/li>![\"\"](\"https:\/\/kookaberry.auststem.com.au\/wp-content\/uploads\/2021\/08\/stop-1024x547.png\")
<\/figure><\/li><\/ul><\/figure>\n\n\n\nWhat is showing on the screen<\/em>?<\/strong><\/p>\n\n\n\n- Top Row<\/strong>: Name of app<\/li>
- Second Row<\/strong>: Warning; D<\/strong> is distance of sensor from target; T<\/strong> is a settable distance from the target which displays the STOP! warning and turns P2<\/strong> to OFF when reached.<\/li>
- Third Row<\/strong>: Shows which pin (P4) to use for sensor; which pin (P2) to use for output peripheral (DC fan motor); and status of P2 (On or Off)<\/li>
- Fourth Row:<\/strong> Button A<\/strong> is Exit from app; Button C<\/strong> decreases the target distance (T), and Button D<\/strong> increases it.<\/li><\/ul>\n\n\n\n
The three LED’s on the front of the Kookaberry will also light up like traffic lights. Green for GO; Orange for SLOW; and Red for STOP<\/p>\n\n\n\n
Using the App for obstacle avoidance<\/h3>\n\n\n\n
With someone else holding the fan, move the sensor towards a variety of obstacles and see the screen warnings change as the you approach a target. Use Buttons C and D to change the distance at which the STOP warning is displayed.<\/p>\n\n\n\n
Using the App for distance measurement<\/h3>\n\n\n\n
Disconnect the fan and use the app as a distance measuring device. The reading to the right of D on the screen is the distance from the sensor to the target.<\/p>\n\n\n\n
Why do you think it is difficult to accurately measure the distance to your target when there are other objects nearby? <\/p>\n\n\n\n
App Extension<\/h3>\n\n\n\n
Change the app from one where it turns off a motor when it reaches its target distance (T), to one which sounds a buzzer when the target distance is reached.<\/p>\n\n\n\n
Tip: Use a second Kookaberry running the Logic App<\/a><\/em><\/p>\n","protected":false},"author":38,"featured_media":11742,"comment_status":"open","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"environment":[],"app-category":[7700,7701,7678],"yoast_head":"\nCloseToMe - AustSTEM Digital Learning Hub<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/learn.auststem.com.au\/app\/closetome\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CloseToMe - AustSTEM Digital Learning Hub\" \/>\n<meta property=\"og:description\" content=\"This demonstrates ultrasonic range detection. 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