Data Logging Shield – Arduino Compatible User’s Guide

Overview

This shield adds SD card storage and a real‑time clock (RTC) to your Arduino. It’s perfect for recording sensor data with timestamps — ideal for environmental monitoring, experiments, and educational kits.

Key Components

Pinout

Setup Steps

1. Stack the Shield onto your Arduino.
2. Insert SD Card (formatted FAT16/FAT32).
3. Install Libraries in Arduino IDE:
   • SD.h for SD card access
   • RTClib.h for RTC control
4. Connect Sensors to the prototyping area.
5. Upload Example Sketch:

   #include <SD.h>
   #include <RTClib.h>
   RTC_DS1307 rtc;
   File logFile;
   
   void setup() {
     Serial.begin(9600);
     SD.begin(10);
     rtc.begin();
     logFile = SD.open("data.txt", FILE_WRITE);
     logFile.println("Time,SensorValue");
     logFile.close();
   }
   
   void loop() {
     DateTime now = rtc.now();
     int sensorValue = analogRead(A0);
     logFile = SD.open("data.txt", FILE_WRITE);
     logFile.print(now.timestamp());
     logFile.print(",");
     logFile.println(sensorValue);
     logFile.close();
     delay(1000);
   }
   

6. Open Serial Monitor to verify logging.
7. Remove SD Card and read data on your computer.

Troubleshooting

Design Tips

• Keep SDA/SCL traces close together for clean I²C signals.
• Add GND vias near the shield corners for solid grounding.
• Use short wires for sensors to reduce noise.
• For long‑term logging, enable Arduino sleep modes to save power.