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I can't sample analog input signal to ardiuno uno for higher frequency . I am unable to read analog input signal with delay less than 4 milliseconds.

rajivkr

I am working on a project to read the analog signal from the input port of Arduino and print it to serial monitor i am unable to read the input signal with delay less than 4 ms, it works with delay higher than 4 ms .

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  • The UNO can sample the ADC at over 9,000 Hz, so the problem is not the A/D converter.

    The serial port may have a baud rate that is too slow to send data this quickly.

    At 9,600 baud the serial port sends about 1 byte per millisecond.

    At 115,200 baud it can send about 12 bytes per millisecond.

    If you need to go faster, you could try SPI.

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  • The UNO can sample the ADC at over 9,000 Hz, so the problem is not the A/D converter.

    The serial port may have a baud rate that is too slow to send data this quickly.

    At 9,600 baud the serial port sends about 1 byte per millisecond.

    At 115,200 baud it can send about 12 bytes per millisecond.

    If you need to go faster, you could try SPI.

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