{"id":145748,"date":"2024-08-07T18:03:03","date_gmt":"2024-08-07T12:33:03","guid":{"rendered":"https:\/\/www.electronicsforu.com\/?p=145748"},"modified":"2025-03-18T11:49:10","modified_gmt":"2025-03-18T06:19:10","slug":"blink-led-using-random-number-generator","status":"publish","type":"post","link":"https:\/\/www.electronicsforu.com\/electronics-projects\/blink-led-using-random-number-generator","title":{"rendered":"Blink LED Using Random Number Generator"},"content":{"rendered":"
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Comment errors or corrections found for this circuit, and get the chance to win big!<\/figcaption><\/figure><\/div>\n\n\n

A random number generation is very important in computing devices which helps them to do task in random manner. <\/p>\n\n\n\n

In the Arduino IDE with the IndusBoard, generating random numbers involves seeding the random number generator with the `randomSeed()` function to ensure randomness across resets, typically using an unconnected analog pin to read random noise. <\/p>\n\n\n\n

The `random()` function is then used to generate random numbers, either within a specified range (`random(max)` for 0 to max-1 or `random(min, max)` for min to max-1). <\/p>\n\n\n\n

This process is essential for applications requiring unpredictability, such as games, simulations, and randomizing actions or intervals. Using analogue noise for seeding enhances the randomness and reliability of the generated numbers.<\/p>\n\n\n\n

The applications of random number generators are:<\/strong><\/p>\n\n\n\n

    \n
  • Generating random events, positions, and outcomes to create unpredictability.<\/li>\n\n\n\n
  • Creating random passwords, encryption keys, and secure tokens for authentication.<\/li>\n\n\n\n
  • Generating random test cases and inputs to ensure robust software testing and identify edge cases.<\/li>\n\n\n\n
  • Creating random blink patterns for lights and introducing random delays in processes to avoid synchronization issues.<\/li>\n<\/ul>\n\n\n\n

    Bill of Materials (BoM)<\/strong><\/h2>\n\n\n\n
    Components <\/strong><\/td>Description<\/strong><\/td>Quantity<\/strong><\/td><\/tr>
    IndusBoard<\/a><\/td>3cm sized dev board<\/td>1<\/td><\/tr>
    LED<\/td>5mm LED<\/td>4<\/td><\/tr>
    Resistor<\/td>1k ohm resistor<\/td>4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Coding<\/strong><\/h2>\n\n\n\n
    \/\/random numbers\n\/\/declare and initialize the led pin numbers\nint LED_1=2;\nint LED_2=3;\nint LED_3=4;\nint LED_4=5;\n\/\/ a variable to hold a number\nlong randomNumber;\nvoid setup() {\n\/\/ put your setup code here, to run once:\n\/\/start serial communication\nSerial.begin(9600);\n\/\/send at start messages to the serial monitor\nSerial.println(\"Start a new sequence of Random Number\");\n\/\/set the mode 0f the LED pins as output\npinMode(LED_1, OUTPUT);\npinMode(LED_2, OUTPUT);\npinMode(LED_3, OUTPUT);\npinMode(LED_4, OUTPUT);\n\/\/generate a random seed\nrandomSeed( analogRead(A0) );\n}\nvoid loop() {\n\/\/ asign a random number to our variable\nrandomNumber = random(2,6);\/\/always use +1 number\n\/\/print the output to the serial monitor window\nSerial.print(\"The Random Number is = \");\nSerial.println(randomNumber);\n\/\/turn on a \"Random LED\"\ndigitalWrite(randomNumber, HIGH);\ndelay(100);\ndigitalWrite(randomNumber, LOW);\ndelay(100);\n}<\/code><\/pre>\n\n\n\n
    Connection<\/strong><\/h2>\n\n\n
    \n
    \"Random<\/figure><\/div>\n\n\n
    Testing<\/strong><\/h2>\n\n\n\n
    Now we connect the board with the USB and upload the code in the indusBoard and check output on serial monitor. When the random numbers are generated, then led start blinking according to the numbers generated.<\/p>\n\n\n
    \n
    \"Random<\/figure><\/div>\n\n
    \n
    \"Blink<\/figure><\/div>\n\n\n
    \n\n\n\n
    Author(s): Manjeet Vishwakarma,  Abhay Verma and Satywanti Kundu are B.Tech ECE students at GJUS&T HISAR<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
    A random number generation is very important in computing devices which helps them to do task in random manner. In the Arduino IDE with the IndusBoard, generating random numbers involves seeding the random number generator with the `randomSeed()` function to ensure randomness across resets, typically using an unconnected analog pin to read random noise. The […]<\/p>\n","protected":false},"author":55758,"featured_media":145759,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,23,776,11851],"tags":[1985,1911,110],"class_list":{"0":"post-145748","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-electronics-projects","8":"category-hardware-diy","9":"category-prototypes","10":"category-super-innovative-projects","11":"tag-diy-projects","12":"tag-do-it-yourself","13":"tag-electronics-projects"},"_links":{"self":[{"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/posts\/145748","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/users\/55758"}],"replies":[{"embeddable":true,"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/comments?post=145748"}],"version-history":[{"count":2,"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/posts\/145748\/revisions"}],"predecessor-version":[{"id":159633,"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/posts\/145748\/revisions\/159633"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/media\/145759"}],"wp:attachment":[{"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/media?parent=145748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/categories?post=145748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.electronicsforu.com\/wp-json\/wp\/v2\/tags?post=145748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}