Filenames need to adhere to the 8.3 format, your's doesn't.
OP's code (as is)
#include <Wire.h>
#include "AS726X.h"
#include <SPI.h>
#include <SD.h>
AS726X sensor;//Creates the sensor object
byte GAIN = 2;
byte MEASUREMENT_MODE = 0;
byte integrationValue = 200; // Change this between 1 - 255 for longer intergration times and more readings.
const int CHANNEL_0 = 0;
int buttonApin = 9;
const int chipSelect = 8;
float sensordataViolet;
float sensordataBlue;
float sensordataGreen;
float sensordataYellow;
float sensordataOrange;
float sensordataRed;
//unsigned long previousTime1;
const int forwards = 7;
const int backwards = 6;//assign relay INx pin to arduino pin
//int j = 0;
void setup() {
pinMode(buttonApin, INPUT_PULLUP);
Serial.begin(115200);
pinMode(10, OUTPUT);
// The chipSelect pin you use should also be set to output
Serial.println("Initializing SD card");
pinMode(chipSelect, OUTPUT);
// see if the card is present and can be initialized:
if (!SD.begin(chipSelect)) {
Serial.println("Card failed, or not present");
//don't do anything more:
return;
}
Serial.println("card initialized.");
//SD.begin(chipSelect);
Wire.begin();
pinMode(forwards, OUTPUT);//set relay as an output
pinMode(backwards, OUTPUT);//set relay as an output
sensor.begin();
}
void loop() {
int j = 0;
if (digitalRead(buttonApin) == LOW) // low means on/ pushed. it is when pushed it connects the wire
{
digitalWrite(forwards, LOW);
digitalWrite(backwards, HIGH);//Activate the relay to go out. Note they must be different to move the motor
do {
sensor.enableBulb();
sensor.takeMeasurements();
sensordataViolet = sensor.getCalibratedViolet();
sensordataBlue = sensor.getCalibratedBlue();
sensordataGreen = sensor.getCalibratedGreen();
sensordataYellow = sensor.getCalibratedYellow();
sensordataOrange = sensor.getCalibratedOrange();
sensordataRed = sensor.getCalibratedRed();
File dataFile = SD.open("lactuator.csv", FILE_WRITE);
dataFile.println(" 00000, 450 , 500 , 550 , 570 , 600 , 650 "); // blank line
//String header = "V, B, G, O, Y, R"; // headers
//dataFile.print(previousTime1);
dataFile.print(",");
dataFile.print(sensordataViolet);
dataFile.print(",");
dataFile.print(sensordataBlue);
dataFile.print(",");
dataFile.print(sensordataGreen);
dataFile.print(",");
dataFile.print(sensordataYellow);
dataFile.print(",");
dataFile.print(sensordataOrange);
dataFile.print(",");
dataFile.print(sensordataRed);
dataFile.print(",");
dataFile.flush();
dataFile.close();
Serial.println(sensordataViolet);
Serial.println(sensordataBlue);
Serial.println(sensordataGreen);
Serial.println(sensordataYellow);
Serial.println(sensordataOrange);
Serial.println(sensordataRed);
//sensor.disableBulb();
j = j+1;
} while ( j < 10 ); // hopefully this runs throug
sensor.disableBulb();
delay(2000); // wait 2 seconds
//dataFile.close();
//sensor.disableBulb();
// I might need this in the do loop
digitalWrite(forwards, HIGH);
digitalWrite(backwards, HIGH);//Deactivate both relays to brake the motor
delay(2000);// wait 2
digitalWrite(forwards, HIGH);
digitalWrite(backwards, LOW);//Activate the relay to retract actuator, they must be different to move the motor
delay(2000);// wait 2 seconds
}
}