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CAN Bus: Serial Communication - How It Works?

Electronoobs

559,589 views

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🔥What is the CAN serial communication protocol and how it works? We analyze the signals and create a CAN por with Arduino and ESP32.

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CAN with Arduino: https://www.electronicshub.org/arduin...
CAN with ESP32: https://www.fernandok.com/2018/07/pro...
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00:00 Intro
08:51 Thank You

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#electronics
#learning
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20 Comments

@ELECTRONOOBS Creator 2 years ago Pinned

Join my Arduino Course (Spanish): https://bit.ly/2JY8icE
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@alexnewton3376 3 years ago

6 months ago, during my masters studies, I had a little knowledge of CANBUS.
Now this video has cleared all my doubts. Perfect animations and great explanations.

@HowtoElectronics 3 years ago

Absolutely fantastic video! Your clear and concise explanation of the CANBUS protocol has made it so much easier to understand. You did a great job of breaking down this complex topic into digestible chunks, and I truly appreciate your effort to educate us. I was struggling with some concepts, but your video cleared up many of my doubts. Thank you for sharing your knowledge and helping others like me to understand this better.

@matinobrajkovic4876 3 years ago

Nice video but I must add that at 3:18 message ID is not based on the address of the node/device, they do not have address, but rather on the priority of the message itself. The message with lower ID will be sent sooner on the CAN bus in process called arbitration. The message as you mentioned is received by all node but more nodes can respond to the message. Also messages sent by one node should have unique IDs otherwise Bus Errors could occure

@ginamar6218 3 years ago

One thing not mentioned in this video is CAN bus termination. Where both ends of the bus has 120 ohm termination resistor. Creating a 60 ohm resistance on the bus. Also in a can network each module on the bus has an in and an out so it goes through that module to another. And if you lose a module on the middle of the bus you may lose all modules or just the ones on the other side of the missing module.

@cookedaudio 2 years ago

6:30 - That is pretty ingenious. Thx for pointing out why differential voltage works so well in an automotive situation.

@BitSmythe 2 years ago

4:27 Ironic how we use BUS communication in CARS. 🤪

@mohamedabdelrehem7698 3 years ago

i was looking for this exact video 2 days ago and you are here now to save me ♥♥

@abdusaidabduraufov5615 1 year ago

After this video, I have expanded my understanding of CAN communication, thanks to the creators of the channel for this

@quant26 13 days ago (edited)

goated, wish me luck for my exam yall

@BitSmythe 3 years ago (edited)

FABULOUS video. This will get me started. My Hyundai has two or three buttons that must be pressed EVERY time I start the car. The forums complain of this issue, but the dealer claims they “can’t” change the settings, it’s just that they won’t. So I expect I will be able to read the button presses, and then copy the bits that I need. And with a little Arduino code, then be able to make my car save the settings I (WE) want it to have.

@Luvemcats 2 days ago

u r amazing u made it all sound so simple!!

@BitSmythe 2 years ago

1:45 VIDEO STARTS HERE!

@nathanbieber2840 3 weeks ago

Thank you! I work at an EMS and constantly have to buy CAN transeivers and didn't know what they were.

@jclm8049 3 years ago

Bonjour à tous !!!! Vraiment au top !!!!
Hello everyone !!!! Really on top !!!!

@sollykhan2385 2 years ago

Absolutely fantastic explanation of the CAN system, accurate and very concise,THANK YOU for the time and trouble to produce the great content and for sharing knowledge, it is well appreciated, please post more,and please share a 'Can' of soft drink as a goodwill gesture 🥤🙂👍

@hoctrimede95 3 years ago

Hello (Ola !!) from France !! Thanks a lot for these videos about "How it works 😀Muchas gracias

@diegocassinera 3 years ago

Good video. One note do, there is no reverse computation of crc. Rather the receiver revives the packet with data and crc. The receiver computes the crc on the received data, and then compare the value it generated to the value received. If they do not match, the data is not trusted.