Easy Ways to Store Data from Arduino for Future Use

The Arduino is an incredible piece of technology. It’s a microcontroller that can be programmed to interact with other electronic devices, such as sensors, motors, and lights. One important thing to keep in mind when using an Arduino is how to store data from it.

Storing data from your Arduino projects may seem like a daunting task at first, but it’s actually quite simple once you know what you’re doing. In this post, we’ll walk through the steps required to store data from your Arduino and give some tips on how to make the most out of your storage capabilities.

Choose Your Storage Option

There are several ways you can choose to store data from your Arduino: onboard EEPROM memory (Electrically Erasable Programmable Read-Only Memory), SD card module or external device such as PC or Raspberry Pi.

  • Onboard EEPROM Memory: The simplest way to store data is by using the onboard EEPROM memory built into many Arduinos.
  • SD Card Module:The second option for storing data requires purchasing an SD card module which will allow you access more space than Onboard eeprom memory
  • External Devices:In cases where larger amount of space is needed one can connect their arduino project directly with over USB cable or use bluetooth connectivity with another device like phone , laptop etc.

Selecting SD Card Module

To start ,you need a properly formatted SD card and compatible SD card reader module .Check if the pins between Ardunio’s board and sdcard modules match up correctly before connecting them together.After confirming they works well together,next step involves installing necessary libraries for reading/writing sd cards..This requires adding information in library manager which contains code snippets necessary for implementation of device specific commands.

Program Your Arduino to Store Data

Now that you’ve chosen the storage option you prefer, it’s time to start programming your Arduino in order to store data. This involves coding in an ‘if’ statement around what we want stored on particular variable and then sending this information over via Serial communication.

Here is an example code for storing temperature readings from a thermistor:

#define TEMP_PIN A0
int tempValue;
float tempC;

void setup() {

void loop() {
tempValue = analogRead(TEMP_PIN);
tempC = (5.0 * tempValue * 100.0) /1024;

if(tempC >20 && tempC <30){ //store temperature value into onboard EEPROM memory EEPROM.write(address,tempValue); address += sizeof(int); } //print out current temperature reading Serial.println("Temperature: " + String(tempC) + "°c"); } ``` This example stores only values between `20` and `30`. Whenever it detects a new value within that range, it will store the corresponding integer value inside the specified starting address in eeprom Memory.


Storing data from your Arduino project doesn’t have to be difficult or time-consuming. With just a few simple steps, you can easily store all kinds of valuable information on-board and off-board devices so make sure you take advantage of these features by implementing them within your next project!

Share this post: