{"id":6969,"date":"2022-01-28T17:53:00","date_gmt":"2022-01-28T16:53:00","guid":{"rendered":"https:\/\/www.carrera-fun.com\/?p=6969"},"modified":"2025-01-02T17:53:29","modified_gmt":"2025-01-02T16:53:29","slug":"mobile-speed-radar-v2","status":"publish","type":"post","link":"https:\/\/www.carrera-fun.com\/?p=6969&lang=en","title":{"rendered":"Mobile speed radar V2"},"content":{"rendered":"
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\"\"<\/figure>\n<\/div>\n\n\n

After the realization of the radar that you can find here https:\/\/www.carrera-fun.com\/?p=6961&lang=en<\/a>, I decided to improve it a little. It was missing some features.<\/p>\n\n\n

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\"\"<\/figure>\n<\/div>\n\n\n

Functions:<\/strong><\/p>\n\n\n\n

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  • Speed \u200b\u200blimit display<\/li>\n\n\n\n
  • Speed \u200b\u200blimit setting (flash trigger)<\/li>\n\n\n\n
  • Adding a flash<\/li>\n\n\n\n
  • Switch indicating the direction of the car<\/li>\n\n\n\n
  • Parameter reset button<\/li>\n<\/ul>\n\n\n\n

    To achieve this, I added 2 buttons, a green one to add 5 to the display and a green one to subtract 5. The red display indicates the authorized speed limit in cm\/s.<\/p>\n\n\n\n

    The main display indicates several information.<\/p>\n\n\n\n

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    • The last speed of passage in cm\/s on the first line.<\/li>\n\n\n\n
    • The number of laps completed and how many times you were flashed (exceeding the authorized \/ set speed)<\/li>\n\n\n\n
    • The minimum and maximum speeds achieved<\/li>\n\n\n\n
    • The average of the passage speeds.<\/li>\n<\/ul>\n\n\n\n
      \"\"<\/figure>\n\n\n\n

      The black button on the side of the radar allows you to reset the data.<\/p>\n\n\n

      \n
      \"\"<\/figure>\n<\/div>\n\n\n

      Material :<\/strong><\/p>\n\n\n\n

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      • LCM2004 (4-line display) (3.5\u20ac)<\/li>\n\n\n\n
      • TM1637 (Red display) (1\u20ac)<\/li>\n\n\n\n
      • 3W high-power LED module with PCB chassis (2\u20ac)<\/li>\n\n\n\n
      • 3 push buttons (0.2\u20ac)<\/li>\n\n\n\n
      • 2-position lever switch (0.3\u20ac)<\/li>\n\n\n\n
      • 1 Arduino Nano (3\u20ac)<\/li>\n\n\n\n
      • 1 Arduino nano support (2\u20ac)<\/li>\n<\/ul>\n\n\n\n

        The Nesquik box has filled up nicely. Buttons and displays connect to the Arduino Nano support.<\/p>\n\n\n\n

        \"\"<\/figure>\n\n\n\n

        I used spade terminals on the switches. I cut the end of the Dupont wires to insert the spade terminals for easy attachment to the switches.<\/p>\n\n\n\n

        \"\"<\/figure>\n\n\n\n
        \"\"<\/figure>\n\n\n\n

        On the cover side, a high-brightness diode was added to represent the radar flash. (red element in the photo)<\/p>\n\n\n\n

        \"\"<\/figure>\n\n\n\n

        Video :<\/strong><\/p>\n\n\n\n