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Community Bot
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The problem here is that I want to connect 5 input buttons to an Arduino but I do not want to utilize 5 input pins of Arduino, is there any matrix like connection using which I can reduce the number of inputs used. The conditions here are:

  • All the buttons will be connected to ground and initialized using:

    All the buttons will be connected to ground and initialized using:

    pinMode(PIN_NUMBER, INPUT_PULLUP)

pinMode(PIN_NUMBER, INPUT_PULLUP)

  • Only digital input is required and not analogue

    Only digital input is required and not analogue

The problem here is that I want to connect 5 input buttons to an Arduino but I do not want to utilize 5 input pins of Arduino, is there any matrix like connection using which I can reduce the number of inputs used. The conditions here are:

  • All the buttons will be connected to ground and initialized using:

pinMode(PIN_NUMBER, INPUT_PULLUP)

  • Only digital input is required and not analogue

The problem here is that I want to connect 5 input buttons to an Arduino but I do not want to utilize 5 input pins of Arduino, is there any matrix like connection using which I can reduce the number of inputs used. The conditions here are:

  • All the buttons will be connected to ground and initialized using:

    pinMode(PIN_NUMBER, INPUT_PULLUP)

  • Only digital input is required and not analogue

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Shakti Phartiyal
Shakti Phartiyal
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How should I connect 5 buttons to arduino so that I can use the least number of inputs all the buttons are connected to ground

The problem here is that I want to connect 5 input buttons to an Arduino but I do not want to utilize 5 input pins of Arduino, is there any matrix like connection using which I can reduce the number of inputs used. The conditions here are:

  • All the buttons will be connected to ground and initialized using:

pinMode(PIN_NUMBER, INPUT_PULLUP)

  • Only digital input is required and not analogue