Using EEPROM with Arduino - Internal & External

[@jacquesmertens3369]

Sir, I can't thank you enough for this fantastic channel. It's the only KZbin channel where I never interrupt any advertisment so that you have a bit of extra income. Keep up the good work.

[@waswestkan]

Clearly not, the only KZbin channel, that doesn't have *video* *interrupting* advertising. Then you and I probably never have seen every channel, however I have seen enough to of them to falsify your assertion.

[@frankbose544]

I don't think they actually get extra money if u watch the hole ad but idk

[@shamrithponlingam1656]

@@frankbose544 for the video ads you have to watch them for at least two thirds and for the ads that is like in the lower half of the video, you have to go to the website.

[@manthespoon]

​@@waswestkan kinda misunderstood the comment

[@ReneStover]

Thank you for the great instruction, I taught electronics for 13 years, worked in the field altogether for 49 years, never had the opportunity to work on my own projects, and never worked with memory, other than using it in computers. I purchased a couple of Arduino Unos and parts kits, and have been meaning to get into learning how to use them in some projects. You have given me the drive to go ahead with my dreams, thank you!

[@EmirUysal]

It almost comes naturally, this impulse to shower you and your channel with compliments. I feel grateful for having this information for free. So structured, neat, easy to follow and quite thorough. And I see at the comments that I'm never alone. Your channel is my biggest ally as I started getting into electronics.

[@ezrabarrow2005]

your voice is so calming. you're like an electronics bob ross

[@GhettoRanger01]

The lisp is kinda catchy, too.

[@learningpower9437]

Fully....agree...He just needs start painting some arduino...few trees...here and there...

[@ezrabarrow2005]

@@learningpower9437 happy little microcontrollers

[@dwalden74]

Let’s give this arduino a little friend.

[@somebody9033]

@@dwalden74 I thought it was lip synced lol

[@WatchesTrainsAndRockets]

If you are using the Tiny RTC module, there is an eeprom module available there also. According to the source that I found when researching why the address scan showed two for the Tiny RTC: "The clock doesn't use the EEPROM at all, it's just there as a convenient place to log data if you so desire".

[@edsonkiyohara]

This is the best channel to learn about electronics stuff. I seldom subscribe in any channel, but this I do recommend for everyone. All subject are presented in a clear manner, in clean and neat and well organized workshop, and explained so well, paused and calm voice that everybody can understand even for who is not english native. Congratulation, I am your big fan!!!

[@waswestkan]

Back in the day I decided to purchase an Alinco DJ-160 VHF portable transceiver, because it used an EEPROM, thus no need for a backup battery. Being aware the memory had a limited number of writes to it, I was conscious about of not changing the contents of the memory channels, unless I absolutely had to, which wasn't often because of the number of channels available. Alas within 5 years the radio quite retaing the memory. Much of my days then where spent outdoors in cold winters, and hot summers, the temperatures where never to the extremes, to make that a fac.tor. Video given, thumbs up, Channell, subscribed to, and bookmarked

[@melkiorwiseman5234]

If you still had it, it would probably be possible to replace the EEPROM with a new one. Maybe even one with a longer life.

[@brigosx]

Welcome back Bill. It's nice to see you again in Workshop. You inspire us man. Thank you !!!

[@danjason2167]

dude,loved the production value with the multiple-camera setup, didn't expect that from a tutorial video like this well done sir

[@billglass5160]

Thanks for this information, well presented, precise, and thorough. Very Useful!!! I was able to add an external EEPROM AT24C256 (32768x8) module to my Sensor prototype. I was initally planning to use an SDCard but it requires a lot of Arduino Nano program(40%) and data(49%) memory. My sensor program and data memory requires 50%,72%. After installing the EEPROM module it uses only 53%,72%. I am able to log approx. 28000 characters (2000 14-character strings). This enables me to monitor more than a week of sensor activity (air & water temperature, humidity, pool water level, Internet information, etc.). In addition, if I neglect checking the EEPROM when it is full, I added a circular address mode for the EEPROM. When I DO check it, I always have the most recent week's activity. Another advantage of using the circular mode is its wear-leveling characteristic. One can only safely write 100000 times to a specific address before the EEPROM becomes unreliable. In my case, I am writing to any specific address only once per week, which gives me a guaranteed reliability for my EEPROM of 100000 weeks or 1923 years!!

[@abreytie]

Just a small add-in. ROM is normally programmed at silicon level during manufacture. PROM is Programmable Read Only Memory A windowless EPROM was available to be a pseudo-PROM EEPROM = Electrically Erasable Programmable Read Only Memory.

[@GerardWassink]

Hi Bill, a tip: instead of using the number 13 for the internal LED it would be better to use the predefined LED_BUILTIN constant. This will hold the number of the internal LED dependent on the Arduino model you are working on...

[@kevingrimshire7462]

Have tried several libraries but none work as well as your code. A fantastic video and your code is so reliable - using it for a data logger and has not missed a beat - well done!

[@caffeinatedinsanity2324]

I bought EEPROMs on digikey that were capable of holding decent amounts of memory and could go as low as not even 1$ CAD so yes they are very inexpensve. However be ready to read datasheets since you are a huge variety of models made by a massive number of manufacturers. Like I bought some from Microchip. I better be ready to use the basic Wire.h commands haha. Speaking of, using sensors like AM2320 or the i2c eeprom I talked about, but only using basic I2C commands can be a great exercise to learn how to use the peripheral itself. Useful especially since not everything has an arduino library AND if you move to other platforms like STM32CubeIDE, you just learned something valuable Same for SPI, UART, etc...

[@raymondmichael4987]

this is perfect but more importantly, it is you sir, the video description gives the big picture about the video not some "sit & dig in to find out" kind of videos, thanks; especially the last part of the description, thanks again. Greetings from Tanzania

[@melkiorwiseman5234]

It's an Electrically Erasable *Programmable* Read Only Memory. First, there were ROMs. These were generally referred to as "mask programmed ROMs" and they were manufactured with the contents of their memory already defined. The memory contents could never be changed and if the program changed, it was necessary to remove the ROM and throw it away while installing a new ROM with the updated program. Then came PROMs, also known as fusible-link ROMs. These came with every bit pre-programmed as a 1, but by using a special programmer and a high voltage, it was possible to make some bits read a 0 instead of a 1. Again, these memories could not be reprogrammed and would generally have to be thrown away and a new ROM or PROM installed if the program ever changed. Next came EPROMs. These used a similar programming method as fusible-link ROMs, but they could be erased by several minutes of exposure to ultra-violet light, then reprogrammed. Finally came EEPROMs. With this technology, almost instant reprogramming could be performed with the memory chip still in the circuit, and high voltages were no longer required. Best of all, it was possible to make EEPROMs read-compatible with the earlier EPROMs. Here endeth the lesson. :)

[@stevetobias4890]

Great video, I am finding your videos very handy as someone who is just getting into Arduino to make learning basic electronics fun. My advanced starter kit and 45 sensor package should arrive in the next week or two. Have installed Arduino and playing with it to familiarise myself with the programming side. I would be lost already without your videos. So a huge thank you for putting in the time to create your content.

[@cybaneticcybanetic441]

Wow first time I've seen a comprehensive use of an eeprom, he he he my projects are about to be interesting even more

[@musaadejoshuaibuopaluwa1712]

I missed your videos. Welcome back and I hope your videos will keep coming in. Thank you and welcome back

[@republicoftutorials6068]

Your channel is fantastic, one of the best electronic channel on entire youtube Thank you sir

[@ΓεώργιοςΦραντζεσκάκης-ν7ζ]

This is a very nice introduction/DEMO of the EEPROM for very beginners. Although :: CAUTION :: the introducer is not mentioning something very fundamental. EEPROM 's blocks (namely addresses) CAN NOT store a number greater than 255 - unsigned integer - or a byte number. Thus in case you need to use it for a real/practic purpose you will need to develop a special Driver-software. In addition to the previous fact you will need to include to the software a piece of code that will prevent loss of data. As a general fact if you try to write a number to your memory and before finished the MCU come with power loss you will lose your data for sure. You want to store the data in order not to lose them but if your Driver is not a proper one there will be always a chance to lose them. Good luck !

[@muhammadmcintee-masud5956]

If anyone is getting a return value of 255, make sure you are using the correct pins on your arduino board for the SDA and SCL of the EEPROM chip. According to the Wire.h library you should use the following: Board I2C / TWI pins Uno, Ethernet A4 (SDA), A5 (SCL) Mega2560 20 (SDA), 21 (SCL) Leonardo 2 (SDA), 3 (SCL) Due 20 (SDA), 21 (SCL), SDA1, SCL1

[@gweliver]

AWESOME!Just what I've been starting to research!!! Thanks for the AWESOME CHANNEL

In every single one of your videos the effort for building them as educational as possible just pours from my screen.. thank you very much for your effort.. regards from Paraguay! (psss.. in the middle of South America ;D )

[@Lunolux]

i spend many hour today watching your video, very good explanation and demo, great work, i bought an arduino 2 year ago but never try to build something more complexe than the basic turn ON/OFF LED xD, and always found video about "arduino" very hard to understand, but your are the first one that explaine it so well, great job (sorry for my bad english)

[@janetmccusker9512]

Welcome back Bill, was waiting for your new video. On one of your earlier vids you mentioned using multiple I2C Masters. That would be very useful and I hope you make the video soon.

[@imadjawad4408]

Organized, detailed, informative and educational I love this channel

[@bluescream7463]

So great to have you back and again a super kristal-clear video. It would be so nice if could give 2 thumbs up! Thanks for sharing your knowledge !

[@paarthsstudio]

Thanks a lot for explaining about EEPROM so well and in detail. You got a new subscriber!

[@dleland71]

That experiment was so cool!

[@garybonard9591]

Thanks!

[@Dronebotworkshop]

And thank you as well!

[@frankmayo1410]

Recently found your Your tube page, great stuff and you're a great instructor! I'll be watching many more! Thank you!!

[@sammyk7024]

A little heads up for my fellow enthusiasts: When the IDE says something like "low memory, things may get unstable" when compiling, well, it appears to be true. At least when dealing with the internal EEPROM. While playing around with it, I wrote a particularly long sketch, with several debug utilities. When running the sketch on a nano, after complaining of such low memory, EEPROM.length() would report extremely low values, eventually reaching ZERO! I thought I have ruined the internal EEPROM, after a couple dozens of write operations. Turns out it was just an "instability" issue. Reducing the sketch size (removing several debug utilities) solved the issue.

[@somebody9033]

Thank you very much for this tutorial! One thing though, according to all resources I have found on the internet other than this one, EEPROM is measured in *kilobytes* not *kilobits*

[@jimwhitehead1650]

Well, not exactly... He's got it right. See ATmel AT24C32 (or 64) Datasheet. They are specified in Kilo bits (Kb). Divide by 8 and you'll get number of Kilo Bytes (KB). Hope this helps. Cheers!

[@somebody9033]

@@jimwhitehead1650 I am sorry but I have to disagree with you here. I have just checked the Arduino Uno's EEPROM size and it is 1024 bytes, however the tutorial erroneously says that the Arduino Uno has 1 *kilobit* of EEPROM.

[@jimwhitehead1650]

@@somebody9033 Sorry, you're absolutely correct that he misspoke about the ATmega328 uC EEPROM size: it's 1 kilobyte (KB). Perhaps I misunderstood the intention of your original comment "EEPROM is measured in kilobytes not kilobits". I am merely pointing out that external EEPROM (like what he accessed in his video), as a separate product, is marketed in kilobits (Kb). It can be confusing for someone new to the game. Nice catch on his ATmega328 EEPROM size comment, BTW 👍

[@somebody9033]

@@jimwhitehead1650 Thanks! Yes, I am not disputing what you said about external EEPROM but the internal one is definitely 1kB not 1kb. What makes it even more annoying is that the official arduino EEPROM tutorial on their website states that the size of the EEPROM is 1kB but then refers to kilobytes as kb, which is actually the symbol for kilobits...

[@StrsAmbrg]

You are a very kind Gentleman.

[@BarackBananabama]

You may want to explain the fail mode of the EEPROM. What do you get if you write too many times? Could you read the last successfully written byte or not?

[@Dalamain]

fantastic video - you explain everything in full detail, thanks dronebot!

[@gasko2762]

Simple and easy to understand video. I love your videos

[@Craig1967]

good video, but one thing you said did not jive with the spec sheet for the Arduino Uno with the ATMEGA328P. It has 1K BYTES of EEPROM memory, not bits.

[@learningpower9437]

Yep....I have a project to store some analog data in the eeprom...and I read the same...The uno is about 1024 bytes (not bits)...but the size is about 255 ( 8 bits)...Hence data from an analog that goes up to 1023 ...must be divided by 4 to keep it within a byte!!!

[@robertwillemsen368]

Nice to see you back! Thank you. Nice video again

[@PatnaikUC]

Excellent as usual. Can the operation of the servo be carried out without using Arduino but only the EEPROM?

[@maybornelectronics7944]

AS USUAL, FANTASTIC EXPLANATION.

[@gasko2762]

Thank you for the excellent work on the topic, I always like to come here when something new comes out.

[@maybornelectronics7944]

Simply superb explanation

[@watchvideo7225]

Great Vidoe as allways! I was originally planning to use the EEPROM to save a sensor calibration, but knowing that it can only store 8 Bits, the accuracy is probably not enough for that. Still useful information though, might come in handy at some point.

[@ECE_Engineering]

Your explanation is one of the best.

[@electronic7979]

Helpful information. I like it

[@luberies]

Your videos are teaching works of art. Thank you very much!

[@simaesthesia]

15:00 - further to your comments earlier in the video, would it not be pertinent to use update instead of write to clear the EEPROM?

[@jagannathkulkarni]

Thank you for the magnificent video. Learned a lot from you !

[@ThePixel1983]

Thank you! I was planning to add an SD card to my led matrix display, but 1kb on the Nano should be enough! ❤️

[@kellyklaask7su990]

Great video! I'm just learning so all this stuff you show is new to me. Thanks for taking the time to do these videos!

[@billfield8300]

Hi Bill.. I have a question which may be a bit off topic but is 'memory' related. I am writing a sketch which I will port to an AT tiny.. The sketch has grown to be too large for the AT tiny to hold. I know I can use an SSD with the raspberry Pi but I have not heard of anyone using external memory (EEPROM, SD, etc..) to actually hold a program for the Arduino. (or AT tiny in my case) Do you know if this is possible? And where might I find some direction on how to accomplish this. Great to see another wonderful tutorial.Thanks. And keep up the great work.

[@AlienWacker]

OMG this is the COOLEST VIDEOS I HAVE EVER SEEN YOU MAKE!

[@gmonkman]

Really clearly explained. TYVM

[@CodeParticles]

@DroneBot Workshop, I apologize for messaging over 4 years too late, but @ 13:26 I have a strange bug where Instead of seeing the past actual inputs, it's literally updating as I turn the potentiometer? I did update script then read script, but for some reason it's not stored? I am using UNO revision 3 and not sure why it's doing that? Thanks in advance!

[@Good-Enuff-Garage]

brilliant presentation, thank you so much

[@rongeernaert1208]

Much learned from an EEPROM in this great video.

[@mandelbro777]

I've checked the ATmega328P data sheet (multiple) and it clearly says they have 1K **Bytes** not Bit's.

[@homelessrobot]

I think people are just conservative here because the standard for specifying the memory sizes in micros is k/mbits, not bytes, and they have been burned by assuming otherwise.

[@jimwhitehead1650]

The ATmega328 uC (used in UNO) does in fact have 1KB of EEPROM and the datasheet reports in MB... so yeah, he misspoke there. However, what can get confusing, is that external EEPROM memory is advertised in Kb (not KB)... and that is the I2C memory unit he demonstrated in his video. Hope this helps...

[@berndeckenfels]

What’s the difference to the flash? Can you also compile to the eeprom?

[@kevingpearce]

Hi Bill. Great video as usual. I'm having trouble getting mine to work. Ran the I2C scanner code, and it found 2 addresses for my AT24C256. One at 80 (0X50), and one at 88 (0X58). Even without the servo connected up, I just get all 255's. Looks like it's not recording anything. All connections are as per your video. I'm using a genuine Arduino Uno with a DIP28 chip. Why the two addresses ??

[@fuzzs8970]

Hi Thank you. Was wondering if you can use the Arduino to program MCU too easily i mean.

[@robertorusso3192]

If i have to store the value of 30 variables of a schetck and i can put a button on a nextion display that "save setting in variables" and in the set up i write code to retrieve the settings at startup. It can work also with the internal eeprom of a Mega? Consider that i have many variables that are unsigned long, float etc. Very less are int.

[@harshvarshney5747]

Thank you, Sir for the nice video. I have a question, if we are using Arduino mega which have 4kb storage can we store a float value in it instead of int.

[@ericthered9655]

But how do you retrieve a value your code is looking for? That's really the point isn't it?

[@ticktock8751]

Hi so how to clear this External EEPROM ? i got some from ali-express and used your sketch to test them, now i like to know how to clean then all out to 000

[@MJ-iy4fb]

I love it! So you can record the movement and then replay it making the servo move exactly like it did before?

[@arthurfricchione8119]

Just starting out in electronics where do you get the software. Just purchased the arduino uno and lookin for any instructional material I can find. Your channel was highly recommended so I am just beginning to follow it. Thanks for sharing Artie 👍

[@musaaftabi6269]

hi I make a project with arduino and RF module which is open and close a door with stepper motor. I have a problem with the arduino power. when it lose the power it couldn remember the last code and the pins for locking the door is falling or getting out of the rail. could you please help me with the sketch ?

[@petercall4267]

Fantastic channel! Thanks so much for your inspirational teaching!

[@Rouverius]

Wow, I forgot that that the EEPROM wasn't just for code storage. Yeah, the update method seems like a great first step to reduce wear. Thinking about basic wear leveling when using the external EEPROM, what about selecting a random starting address before logging data? (Of course, the start address would then need to be stored on the onboard EEPROM) Wouldn't the randomization spread out the wear and not have it always focus on the first addresses of the EEPROM?

[@melkiorwiseman5234]

Computers don't do "random" very well, and anything you try in order to produce randomness will tend to slow down the program. Computer "random" number generators use a mathematical formula to simulate randomness, but the trouble is that you need a "seed" number to start with, and if you always start with the same "seed" number, you'll always get the same sequence of numbers as output. The only way to prevent that would be to store the seed number in the EEPROM, which means you've thrown out the idea of wear levelling since that number has to be stored in the same place every time in order to be "findable." Anything you do in order to try to fix the problem becomes an "elephants all the way down" situation, once you think about it.

[@nguyenangthang7473]

Thanks for sharing, I'd like to ask if I want to send a list of values that (each value) larger than 1 byte into EEPROM so how would I change my code, thank you very much!

[@joshadikal1617]

Teaching-Masterpiece. Thanks a lot for your help. Is this technique the better way to command a motor in real-time ? With a temperature sensor for examle ?

[@gloubiboulgazeblob]

@ ~05:09 : an Arduino Uno has 1k BYTES eeprom, not 1k BIT...It's clearly mentionned in the datasheet : "...The Atmel ® ATmega328P provides the following features: 32K bytes of in-system programmable flash with read-while-write capabilities, 1K bytes EEPROM, 2K bytes SRAM, ..." (it says "1K bytes", not 1K bits). I made a little sketch to write some data on it and I can read the entire eeprom which goes from address 0 to 3FF, each address being a byte, not a bit...

[@lisandroiaffar4501]

Just impecable, thank you so much!!!

[@davidbolha]

Hi, Could you use the Arduino to reset/reprogram various BQXXXX ICs that are usually found in laptop batteries ? 🤔😕 Thanks &.... Best Regards,

[@airtonmigueljunior8144]

Please, I would like to know If the use of the external eeprom, with your code, will work with a ESP32

[@markmccornack7983]

I really enjoy your channel. Your presentations are always so lucid and informative! I did run across a question for you though on this one. At around 5:00 in, you mention that the UNO (Atmega328) has 1 kilo-BIT of memory and the Atmel data sheet claims 1kBYTE of EEPROM on the opening page of the datasheet. I'd like to use te internal EEPROM, but 1kBIT is kind of a showstopper. 1kBYTE would work for me though. Can you clarify this for me? Keep up the GREAT work!

[@E_y_a_l]

The UNO is using the ATmega328P chip, according to everything I can find including the official Arduino website, that chip has 1 kilo BYTE of EEPROM storage.

[@catalinalb1722]

Hello Sir. Thank you for your great work by sharing your experience. What software are you using for the beautiful wiring diagrams?

[@wardprocter2371]

Excellent, well explained tutorial! Thanks!

[@stephenbarlin2314]

Indeed inspiring. Thankyou

[@simonndungu1196]

New to the channel and I love your way of explaining stuff. Thanks and Cheers Man

[@thilinawijebandara3232]

Thank you so much for making such a wonderful explanation with the experiments. You are the one of best youtuber I have seen in you tube. . Thank you again 🙂👍 Go ahead sir.

[@kvamsidharvamsi5800]

hello, can you post a video on external eeprom with esp32

[@donboi9378]

when i use the update eeprom it doesnt show anything on the serial number. But when i run the read code eeprom it shows all the numbers it was supposed to show from the update eeprom.

[@atomize]

The way "A-T-2-4-L-C-2-5-6" rolls right off of your tongue confirms that you're a pro :-P

[@josephbonello163]

Thank you Sir ..Love all your video's you are a great teacher

[@flavatech5938]

How would you take a Arduino 'midi controller' project in to proper production? Would i simple need to design & create my pcb board then copy my (Arduino ) coded EEPROM chips to my (self) designed PCB board ?

[@navodnandima4305]

well explained and can understand anyone

[@alfredkaserekasivanzire9488]

Can we use eeprom 24CXX (24C02; 24C04; 24C08; 24C16...) with arduino?

[@shivamdeshpande1959]

Thanks a lot sir!! It was really helpful

[@michaels8297]

Anyone have pointers on flashing a new sketch over the air from mqtt?

[@jimedgar6789]

Bill, what is EEPROOM in your comment for the write function? :P

[@dwalden74]

If I want to read/write many times to EEPROM, is it a good idea to store the address counter as well, and then read from that last address, so that I don’t exhaust one address’s read/write capacity?

[@Asyss_Complex]

What you're looking for is called "wear leveling". And yes, that is going to prolong the life of the EEPROM. You can look it up. There are libraries written to tackle this problem. Read this discussion: stackoverflow.com/questions/10667491/is-there-a-general-algorithm-for-microcontroller-eeprom-wear-leveling

[@chuckcash9250]

has anyone figured out the values of the resistors to use with the chip only?

[@DJ_GrenadianEmpire]

Can i use this to rest ricoh ri 1000 ink chip

[@kdd2]

How to create BT201 Bluetooth module arduino support library files

[@samuelgeorge6756]

Thank you sir. Thats how you teach something well. Great !

[@karte2626]

Great channel!!! Do you have any video about an analog isolator? That is, the input ranges from 0 to 5 volts and the output follows the range input 0 to 5 DCV. I appreciate!!!

[@خالدباشميل-ب9و]

I try make this experiment but used 24c08w eeprom and connected but the data in recorder not same data biayback can you give me Clarification