In this beginner-friendly tutorial, We will explore how to read and write different types of data to the internal EEPROM memory of an Arduino board (ATmega328P). [store-struct-arduino] We'll use the EEPROM library available in the Arduino IDE. Specifically, we'll cover how to store and retrieve …

Thanks for sharing (too bad it’s not readable right here). You could improve your Arduino conformity by using camel case throughout your codes. That’s the recommended capitalization.

There's a little mistake on the web page: [image] On an Uno R3 (and AFAIK this is true for all 8 bit AVRs with Arduino IDE) [image] [Edit added the following] This might mislead a beginner into thinking that loss of precision is caused by the use of EEPROM. [image]

good catch. That's totally wrong.

I usually use either PascalCase or c_style type variable names

thanks for finding the mistake,i corrected it

I have already written the article at my website and i also have a video.It was not possible to post the video here

I had a look and saw that you changed the size, but didn't change the paragraph about precision. What's your rationale for saying what you say about loss of precision when storing floats? My take on it is that what you say is true of floats in general, but has nothing to do with whether or not the…

[image] Dave_Lowther: [image] float(2bytes) -- do you mean that a variable declared as float will hold 16-bit (2bytes) data? If not, please clarify the meanig of: float(2bytes). double(4bytes) -- do you mean that a variable declared as double (UNO Board) will hold 32-bit (2bytes) data? If n…

[image] xnth2021: It was not possible to post the video here you mean this is impossible then :slight_smile: ? [Learn to Read and Write bytes, floats ,doubles ,character strings, structs to EEPROM of Arduino]

Storing floats and double in the internal EEPROM of Arduino

Projects Showcase

xnth2021 January 26, 2025, 6:21pm 10

Yeah,you are correct, i removed it

Topic		Replies	Views
Variables Storage in eeprom Programming	3	858	March 25, 2024
Write/read data from EEPROM Programming	4	1084	May 5, 2021
How does the EEPROM store int and char ? General Guidance	12	150	January 9, 2026
Floating point value into EEPROM Programming	10	2047	October 26, 2021
Different behaviour of different EEPROM Adresses Storage	9	452	February 8, 2024

Storing floats and double in the internal EEPROM of Arduino

Related topics