Flutter Resistor Colour Code Card with Four Band Decoder and Ohm Readout

A 4-band resistor decoder card for electronics and maker apps: a through-hole resistor drawn in red, violet, green and gold, a per-band legend, the decoded 2.7 MΩ value with its ±5% range, and the full 0 to 9 digit colour strip with the used bands outlined.
by Anılcan Çakır 118 views 0 stars 3 weeks ago Rev 1
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Flutter Resistor Colour Code Card with Four Band Decoder and Ohm Readout preview
main.dart
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                  'Resistor Decoder',
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                WText(
                  '4-band colour code, IEC 60062',
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          WDiv(
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          WDiv(
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          WDiv(
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          children: [
            WDiv(
              className: 'w-[22px] h-[8px] rounded-full bg-[#dc2626] dark:bg-[#dc2626]'
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            WText(
              '2',
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            WText(
              '1st digit',
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          children: [
            WDiv(
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            WText(
              '7',
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            WText(
              '2nd digit',
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          children: [
            WDiv(
              className: 'w-[22px] h-[8px] rounded-full bg-[#16a34a] dark:bg-[#16a34a]'
            ),
            WText(
              '×100k',
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            WText(
              'Multiplier',
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          ]
        ),
        WDiv(
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          children: [
            WDiv(
              className: 'w-[22px] h-[8px] rounded-full bg-[#d4a017] dark:bg-[#d4a017]'
            ),
            WText(
              '±5%',
              className: 'text-sm font-bold text-gray-900 dark:text-white mt-1'
            ),
            WText(
              'Tolerance',
              className: 'text-[10px] text-gray-500 dark:text-gray-400'
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          ]
        ),
      ]
    ),
    WDiv(
      className: 'flex flex-row items-end justify-between w-full mt-4',
      children: [
        WDiv(
          className: 'flex flex-col',
          children: [
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              'Resistance',
              className: 'text-xs text-gray-500 dark:text-gray-400'
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            WText(
              '2.7 MΩ',
              className: 'text-3xl font-bold text-gray-900 dark:text-white'
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          ]
        ),
        WDiv(
          className: 'flex flex-col items-end',
          children: [
            WText(
              '±5% tolerance',
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            WText(
              '2.565 to 2.835 MΩ',
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          ]
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      ]
    ),
    WText(
      'Digit bands',
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          '0',
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        ),
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          '1',
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        ),
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          '2',
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        WText(
          '3',
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        ),
        WText(
          '4',
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        ),
        WText(
          '5',
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        ),
        WText(
          '6',
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        ),
        WText(
          '7',
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        ),
        WText(
          '8',
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        ),
        WText(
          '9',
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        child: WText(
          'Copy 2.7 MΩ ±5%',
          className: 'text-sm font-semibold text-white dark:text-gray-900'
        )
      )
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)
Stats
Views: 118
Stars: 0
Revisions: 1
Size: 8,607 chars
Created: Oct 8, 2026