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SD Data Recording

Home Forums Data Loggers SD Data Recording

This topic contains 1 reply, has 2 voices, and was last updated by  Sara Damiano 3 days, 9 hours ago.

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  • #13303


    Hi all,

    I am trying to log data from a conductivity sensor to the SD card, for some reason it is not working. here is my code (I try to use code snippet but I could not make it look like how it suppose to be, I will try again when I am not too busy):

    #include <Arduino.h>
    #include <math.h>
    #include <Wire.h>
    #include <SD.h>
    #include <SPI.h>

    //Digital pin 12 is the MicroSD slave select pin on the Mayfly
    #define SD_SS_PIN 12

    //The data log file
    #define FILE_NAME “Conductivity.txt”

    //Data header (these lines get written to the beginning of a file when it’s created)
    #define LOGGERNAME “Mayfly microSD Card Tester”
    #define DATA_HEADER “Conductivity.txt”

    int pin12 = 12;
    File Conductivity1;
    int volta;
    float Division;

    void setup()
    Division = 0.0048875;
    if (SD.begin(SD_SS_PIN))
    Serial.println(“SD card on”);
    Serial.println(“SD card activation failed”);

    void loop()

    volta = analogRead(A3);
    float voltage = (volta)*(Division);
    File Conductivity1 = SD.open(“Conductivity.txt”,FILE_WRITE);
    Serial.println(“Conductivity = “);
    Conductivity1.println(“Conductivity = “);
    delay (1000);

    Please may everybody tell me what I am doing wrong, i would appreciate.

  • #13315

    Sara Damiano

    I think

    should be

    You also should have a

    before the last delay.

    Are you using a Mayfly? Are you using the built-in microSD card slot or the vertical adapter? What output do you get?

    Did you ever get your program in your earlier thread to write to the SD card?

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