{"page":"\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/resources-572d6a42.css\" /\u003e\n\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/lp_boclips_stylesheets-f4d0de30.css\" media=\"all\" /\u003e\n\u003cdiv data-title='Tutorial 07: digitalRead() and the Serial Port: Arduino Course for Absolute Beginners (ReM)' data-url='/boclips/videos/62a0e5aecac8fb5334bbaf19' data-video-url='/boclips/videos/62a0e5aecac8fb5334bbaf19' id='bo_player_modal'\u003e\n\u003cdiv class='boclips-resource-page modal-dialog panel-container'\u003e\n\u003cdiv class='react-notifications-root'\u003e\u003c/div\u003e\n\u003cdiv class='rp-header'\u003e\n\u003cdiv class='rp-type'\u003e\n\u003ci aria-hidden='true' class='fai fa-regular fa-circle-play'\u003e\u003c/i\u003e\nVideo\n\u003c/div\u003e\n\u003ch1 class='rp-title' id='video-title'\u003e\nTutorial 07: digitalRead() and the Serial Port: Arduino Course for Absolute Beginners (ReM)\n\u003c/h1\u003e\n\u003cdiv class='rp-actions'\u003e\n\u003cdiv class='mr-1'\u003e\n\u003ca class=\"btn btn-success\" data-posthog-event=\"Signup: LP Signup Activity\" data-posthog-location=\"body_link_boclips\" data-remote=\"true\" href=\"/subscription/new\"\u003e\u003cspan\u003e\u003cspan\u003eGet Free Access\u003c/span\u003e\u003cspan class=\"\"\u003e for 10 Days\u003c/span\u003e\u003cspan\u003e!\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-body'\u003e\n\u003cdiv class='rp-info'\u003e\n\u003cdiv aria-label='Hide resource details' class='rp-hide-info' role='button' tabindex='0'\u003e\u0026times;\u003c/div\u003e\n\u003ci aria-label='Expand resource details' class='rp-expand-info fai fa-solid fa-up-right-and-down-left-from-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003ci aria-label='Compress resource details' class='rp-compress-info fai fa-solid fa-down-left-and-up-right-to-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003cdiv class='rp-rating'\u003e\n\u003cspan class='resource-pool'\u003e\n\u003cspan class='pool-label'\u003ePublisher:\u003c/span\u003e\n\u003cspan class='pool-name'\u003e\n\u003cspan class='text'\u003e\u003ca data-publisher-id=\"30358947\" href=\"/search?publisher_ids%5B%5D=30358947\"\u003eProgramming Electronics Academy\u003c/a\u003e\u003c/span\u003e\n\u003c/span\u003e\n\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-description'\u003e\n\u003cspan class='short-description'\u003e*Description:*As simple as it may seem, knowing when something is either on or off can be a great tool to designing something useful.  Answers to the following questions are what this lesson plans to tackle:Is a button being pressed?Has...\u003c/span\u003e\n\u003cspan class='full-description hide'\u003e*Description:*\u003cbr/\u003e\u003cbr/\u003eAs simple as it may seem, knowing when something is either on or off can be a great tool to designing something useful.  Answers to the following questions are what this lesson plans to tackle:\u003cbr/\u003e\u003cbr/\u003eIs a button being pressed?\u003cbr/\u003eHas a switch been turned on?\u003cbr/\u003eWhat is my on/off sensor status?\u003cbr/\u003eWhen you can answer questions like these, you can implement actions based on the current status - if the button is pressed do this - otherwise, do that.  If the sensor is HIGH take this action, otherwise do nothing.  You get the gist.  But before we can implement the actions, we have to be able to track the status and the changes of the digital pins.\u003cbr/\u003e\u003cbr/\u003eYou Will Need\u003cbr/\u003e\u003cbr/\u003eA momentary push button - this is a button that is spring loaded, so when you press it, it pops back out\u003cbr/\u003eJumper wires - at least three\u003cbr/\u003eA 10,000 Ohm resistor AKA 10K resistor\u003cbr/\u003eA solder-less breadboard\u003cbr/\u003eA very ripe banana, with one peel removed (not completely useful, but nutritious)\u003cbr/\u003eStep-by-Step Instructions\u003cbr/\u003e\u003cbr/\u003eConnect your push button to the breadboard.\u003cbr/\u003eConnect one side of the push button to the 5-volt pin on the Arduino board using a jumper wire.\u003cbr/\u003eConnect one side of the 10K resistor to the other side of the pushbutton.\u003cbr/\u003eConnect the other side of the resistor to the ground pin on your Arduino.  You may have to use a jumper wire to make this reach.\u003cbr/\u003eThe same side you have your resistor connected to the pushbutton, connect a jumper wire  and run this to pin 2 on your Arduino board.\u003cbr/\u003eConnect your Arduino to your computer with the USB cable.\u003cbr/\u003eGo to File, Examples, 01.Basics, digitalReadSerial\u003cbr/\u003eClick the Verify button in the top left corner. The verify button will turn orange and then back to blue when it has completed compiling.\u003cbr/\u003eClick the Upload Button (to the immediate right of the verify button).  This button will also turn orange and then back to blue once you sketch is uploaded to your Arduino board.\u003cbr/\u003eNow go to the menu bar at the top and select Tools, Serial Monitor.  You could use the short cut key of Shift + Control + M.\u003cbr/\u003eThe serial monitor window will open and will be spotting off numbers.  It should be a bunch of 0's.\u003cbr/\u003ePress and hold the pushbutton - watch the serial monitor window, the numbers should now be 1.\u003cbr/\u003eIf the numbers are not scrolling, make sure you click scrolling at the bottom left of the serial monitor window.\u003cbr/\u003e\u003cbr/\u003eThis sketch opens up with a multi-line comment containing a short description of the program and circuit.  The first block of code is where we declare and initialize variables.  From the last lesson we are familiar with the int data type.\u003cbr/\u003e\u003cbr/\u003eint pushButton = 2;  //This is the pin that our push button is connected to.\u003cbr/\u003e\u003cbr/\u003eNotice how on one line the variable pushButton is declared and initialized.  Also notice the descriptive name of the pushButton - this is how it ought to be - variable name with meanings.\u003cbr/\u003e\u003cbr/\u003eSo let's consider what we have done so far - we have made a variable that will store the pin number that our push button is connected to.\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='action-container flex justify-between'\u003e\n\u003cbutton aria-expanded='false' aria-label='Read more description' class='rp-full-description' type='button'\u003e\n\u003ci class='fai fa-solid fa-align-left'\u003e\u003c/i\u003e\n\u003cspan id='read_more'\u003eRead More\u003c/span\u003e\n\u003c/button\u003e\n\u003cdiv class='rp-report'\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv aria-labelledby='resource-details-heading' class='rp-info-section'\u003e\n\u003ch2 class='title' id='resource-details-heading'\u003eResource Details\u003c/h2\u003e\n\u003cdiv class='rp-resource-details clearfix'\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eCurator Rating\u003c/dt\u003e\n\u003cdd\u003e\u003cspan class=\"star-rating\" aria-label=\"4.0 out of 5 stars\" role=\"img\"\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-solid fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003ci class=\"fa-regular fa-star text-action\" aria-hidden=\"true\"\u003e\u003c/i\u003e\u003c/span\u003e\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt class=\"educator-rating-title\"\u003eEducator Rating\u003c/dt\u003e\u003cdd\u003e\u003cdiv class=\"educator-rating-details\" data-path=\"/educator_ratings/rrp_data?resourceable_id=187889\u0026amp;resourceable_type=Boclips%3A%3AVideoMetadata\"\u003e\u003cspan class=\"not-yet-rated\"\u003eNot yet Rated\u003c/span\u003e\u003c/div\u003e\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eMedia Length\u003c/dt\u003e\n\u003cdd\u003e20:29\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eGrade\u003c/dt\u003e\u003cdd title=\"Grade\"\u003eHigher Ed\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eSubjects\u003c/dt\u003e\u003cdd\u003e\u003cspan\u003e\u003ca href=\"/search?grade_ids%5B%5D=259\u0026amp;search_tab_id=1\u0026amp;subject_ids%5B%5D=365221\"\u003eScience\u003c/a\u003e\u003c/span\u003e\u003c/dd\u003e\u003cdd class=\"text-muted\"\u003e\u003ci class=\"fa-solid fa-lock mr5\"\u003e\u003c/i\u003e8 more...\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eMedia Type\u003c/dt\u003e\u003cdd\u003e\u003cspan\u003e\u003ca href=\"/search?grade_ids%5B%5D=259\u0026amp;search_tab_id=2\u0026amp;type_ids%5B%5D=4543647\"\u003eInstructional Videos\u003c/a\u003e\u003c/span\u003e\u003c/dd\u003e\n\u003c/dl\u003e\n\u003c/div\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eSource:\u003c/dt\u003e\n\u003cdiv class='preview-source' data-animation='true' data-boundary='.rp-info' data-container='.rp-resource-details' data-html='false' data-title='Got questions about Arduino? 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