dataloggermodifikasi

#include <SPI.h>
#include <SD.h>
const int chipSelect = 10;
void setup(){
  Serial.begin(9600);
  pinMode(10, OUTPUT);
  if (!SD.begin(chipSelect)) {
    Serial.println("kartu memori error");}}
void loop(){
  String dataString = "";
  for (int analogPin = 0; analogPin < 3; analogPin++) {
    int sensor = analogRead(analogPin);
    dataString += String(sensor);
    if (analogPin < 2) {
      dataString += ",";}}
  File dataFile = SD.open("datalog.txt", FILE_WRITE);
  if (dataFile) {
    dataFile.println(dataString);
    dataFile.close();
    Serial.println(dataString);}
  else {
    Serial.println("file datalog.txt error");}}