By: hobbyist
John, Good writeup, Having the zz variable declared as byte would be apt in this case as the EEPROM stores bytes. I do see you limit the values in the variable to 255. Cheers
View ArticleBy: Leone
Good afternoon John, would aid in the programming of a situation. any variable has a type int value = 9856; like this number of stores each variable in a type of memory space at address 0, stores the...
View ArticleBy: John Boxall
Thanks for your feedback. The flash memory is just for your program. You can store data as long as it is defined in the sketch before hand.
View ArticleBy: DRAI Francis
Hello John I am newbie in arduino word. I want to have a clarification about the memory usage in arduino box: is the flash memory dedicated to the program or part of it can be used to store data?...
View ArticleBy: Stewart
The life cycle described here is a little ambiguous. The eeprom can be written/re-written at least 100,000 times. It can be read an almost infinite number of times.
View ArticleBy: John Boxall
If you like I can organise a consulting engineer to design this for you. The charge is Au$60 per hour.
View ArticleBy: Jitu Kumar
hello can u make Prepaid Energy Meter how can store data in eeprom if power if off i want to store the data like meter reading in the eeprom when i restart the program i want data is start to where the...
View ArticleBy: John Boxall
Due to time constraints and fairness, I don’t write custom code for people. Please review the tutorials, work through the examples and you should then have the knowledge to take care of it.
View ArticleBy: ametist
Hi John , Could you explain us how to store array value in built-in eeprom with keypad and eeprom library please. Instead to write it on lcd, save it in eeprom: void loop() { char key =...
View ArticleBy: Th3badwolf
Hi Mr. Boxall,I’ve tried to post a comm but it got deleted or spammed i guess. If you could reach me by email asap I’d appreciate it thanks.
View ArticleBy: John Boxall
If you are using my keypad examples, just write in the contents of the array to EEPROM.
View ArticleBy: elben montil
Good Day Sir, Thank for the tutorial.. But I have a problem sir, on how to save the data in the eeprom when I press the keypad to make a password.
View ArticleBy: John Boxall
You need to divide up your data into bytes, then store them sequentially, that is spread out your data over single bytes in a row in the EEPROM. john
View ArticleBy: Gursi
Thanks you so much. Can you please tell me how to store more than 1 byte in EEPROm. For example, IR infrared protocol (NEC Protocol) has more than 32 bits, but I want to store it in the EEPROM. So can...
View ArticleBy: Duncan
Thanks John, no further forward at this point but clearer in my understanding…
View ArticleBy: John Boxall
No, it’s the limitations of using the Arduino way of doing things. You most probably will want to examine writing to the microcontroller directly, perhaps using AVRstudio, etc. You may want to check...
View ArticleBy: Duncan
Ah… So, if I’m following this correctly, there isn’t any way that I can write directly from the PC to the EEPROM? I’d have to upload a sketch to the Arduino – run something else on the PC that will...
View ArticleBy: John Boxall
Mm. You could write a sketch to accept numbers using the serial monitor box, and store them in the EEPROM. Then the sketch would know how to read those values from the EEPROM. No wasted sketch space....
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