The best explanation of I2C in the least amount of time with great clarity - thanks Sir and kudos for such a presentation.

Very well explained with a lot of detail that many others simply omit. The diagrams showing how a pull up resister works, and how to calculate its value, are so simple to understand. Great job!

The best material about I2C I've found in 3 days of search! Looking in blogs, videos and articles.

This was a fantastic video and I say that as a former educator and amateur cinematographer! Great job buddy.

Just measured an Adafruit BNO055 sensor and got 10K ohms on clock and data lines. THANKS for excellent short video. Really interesting.

If you need to connect more devices but the resistance becomes too low, just desolder the resistor from the breakout boards which lower the resistance too much.. With I2C you want about ~2K Ohms so that you can transmit data much faster :D I see a bunch of comments where people think this video is "useless" but he explains this at the end, Resistance in parrallel is divided! Hope this helps

bloody amazing - now that's what I call an explanation

fantastic, thanks. I never thought about the parallel resistors

Most excellent! Love your graphics and animation, they add so much to the learning experience.

Excellent explained pull up resistors in I2C applications.

Best i2c vid ive ever seen.

Man, you should be making more Videos. Very nice explanation.

You should make more videos man! You're good on it

Great article, making a home made weather station and it helps clarify things a lot

I tried to like this video while watching it on my 'smart' tv. wasn't fast enough, so here I am to both like this video and subscribe because THIS was an awesome video and I learned something I hadn't even known I needed to know. Thank you.

Very precisely and accurately explained!!

one of the best explanations I have seen

Fabulous awesome.... this kind of explanations can even make a child understand about arduino no matter how much he is able to understand anything else... he he

Great job. Perfect pace right amount of detail. Thanks!

Extremely clear presentation, thank you for sharing!

very informative ,never realised all these,untill now thanks

Very interesting, hope to see more videos!

GREAT explanation!

Great tutorial. Lots of good knowledge!

Thanks, have been trying to understand this for a while, perfect explaination ;-)

Great explanation, thanks a lot. I was facing problem with loadout resistors

omg what an amazing channel!! thanks for the video, helped tons!

great job you just helped me understand a problem I had been having. subscribed.

Excellent explanations!

Great insights - but depending on what you are doing, the limit is even lower ;) Break-Out Boards usually give you the option to configure the used I2C-Adress by connecting a pin to GND, VCC, SLA or SLC. And that's another hard limit: You can only use 4 addresses for these kind of boards. If you want a fifth, you'll need to find another vendor who has preloaded his device with a different address or even offers some way to freely configure it beside the classic way of using 4 different voltage levels through an extra pin.

Nice tutorial! we want more like that pleasee

This video is awesome, THANK YOU!

Really cleared a lot of my doubts!

Awesome I have 4 i2c devices and when I connect the fourth the sketch freezed randomly now after seeing this video I will definetly check the total I2C bus resistance since all are breakout boards

Perfecet explanation..with lot of details..thx

Very well done! Thank you.

I enjoy your presentation and flow. Make more if possible. Hope all is well with you.

You deserve more views

Informative, just subbed, thankyou!

Very nicely explained. Subscribed

bluedot, you are awesome man! very nice presentation. the solution must be "TO SOMEHOW ATTAIN A EFFECTIVE RESISTANCE OF 1.5K OHM" you could try removing the pull up resistors in the slave(s) and adding a 1.5k resistor seperately

What a fantastic video! Thank you so much.

This was an excellent video!!!! Thx

Great information - How about more of the same type ? Keep up the good work - I like the way you make it short and to the subject. Thank you.

Thank you, Sir! Great Video

Really Well explained 😎👍🏾

Brilliant content...

Excellent info

Excellent video. I was hoping for something to do with the addresses as well though...

Great explanation, thanks

Great video, thanks.

very well done...😀 i learned a little bit more... 😀 great info... 👍👍👍

More video please. Very well explained (Y)

GREAT VIDEO SIR

Video explains much easiers.Thanks for nice thing

good video for me, thank you!

Thank you. Great job.

So.. How do I increase the resistance above the minimum value if I've got (too) many I2C devices connected?

You are a Craack! I dont speak english, but I inderstood this

GREAT material by the way, subscribed (Y)

Published in 2016 and it's still providing great information. Nice video. I do have a question. How would you power 11 or more sensors all at once if I wanted to use battery as a backup and not as a main source of power?

Great video!

great video

Very good video!

Hello! Do you know if it is possible to connect two displays, but SH1106 and with another library (I use Adafruit's)? The solution I have at the moment is to use 2 arduinos, but the expense would be higher.

excellent presentation , I have only one question because I was thinking about this very question of how many devices can I put on the I2C bus or more specifically I want to know how many arduino nanos I can put on the I2C bus ? I am thinking to use a raspberry pi as the master I2C bus and have nanos looking after individual sensors with their own isolated I2C busses or sensors directly connected to nanos with out using the isolated I2C bus. Nanos don't as far as I know have any resistors on the SDA or SCL . If what I'm thinking is correct then you could have an unlimited number of sensors connected to a main I2C bus of a master Pi or Arduino and just isolate the sensors with arduino nanos which are so cheap to buy.

great video thanks!!! why do these breakout boards even have he pull up resistors already build inside? Wouldn't be a big deal to plug them in yourself and spare all the trouble...

This is amazing information, thanks

best video on this topic.........make another please on spi and other topics......

Thank you for video.

Great video kindly do more videos

its been 2 years i dont think hes coming back.

Awesome!! Very clear presentation of great information.

Hi, I need to make an I2C communication between an Esp 32 and Esp8266, where can I find info about?

Fantastic information.

Can you disconnect the pullup resistors to make the logic low voltage drop?

could this be the reason why my SPI LCD shows artifacts right at the moment when the SPI communicates to another SPI device such as SD card?

Great job! Can you make more videos?

so all i have to do to connect multiple I2C devices on arduino is to connect resistors between Vcc-SDA and Vcc-SCL the pull-ups right?

Have you ever used the TCA9548 i2c multiplexor?

How do you handle the addressing if 2 devices have the same I2C address?

Can you effectively connect 7 i2c devices to a nano? Will it work?

Plz make videos on this topic

Thank you

couldn't the 'low-voltage' be reduced further by adding an extra resistor to the clock-line?

Thanks for the Knowlege

This really helped in my understanding, but I was wondering (hopefully this is not a stupid question) but would this be considered analog multiplexing? And would this allow the arduino to communicate with 2 devices with the same MAC address at the same time?

Wow. Pls post more video.

it is possible to connect with two TSL 2561 sensor ?

Great !

Thanks !

hate to tell you this, but this is his only video! in fact their is nobody home. i suspect he returned home to his other planet.

Mega stabil

How do i connect 10 Arduino togather. Is that any possibility to do this ?

good video

nice

How long distance maximum sir?

THANKS

This was a really good presentation, but you left out the most important part - what do we do about it? It seems to me, we need to remove the pull up resistors from all but one of the devices. There probably comes a point where that isn't enough, so we would need to remove ALL of the pull up resistors, and fit the appropriate size for that number of devices - those would be bigger value resistors, to get a good logic low level, surely? There is also this video, which may be helpul: kzfaq.info/get/bejne/qa2KmJOSr9nVcoU.html

How many device can control