Arduino CAN Bus Tutorial | Interfacing MCP2515 CAN Module with Arduino

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In this tutorial, we will learn about the CAN Bus protocol by Interfacing MCP2515 CAN Bus Module with Arduino. We will transmit the DHT11 Sensor data over a certain distance using the CAN protocol.

Controller Area Network also known as CAN-BUS is a common industrial bus because of its long travel distance, medium communication speed, and high reliability. It is commonly found on modern machine tools and as an automotive diagnostic bus.

In modern Vehicle systems, there are more than 60 to 100 sensor units for sensing and exchanging information. Similarly, car manufacturers are constantly making their cars smarter by adding features like Autonomous driving, Airbag system, ABS (Anti-braking System), Telematics, Transmission Control, Battery management systems, and Cruise control system, etc. To enable the transmission and receiving of the data at a very high-speed standard automotive communication protocols are required.

The standard communication protocols like UART, SPI, and I2C are not reliable for this system. Hence we need an automobile communication protocol like the CAN protocol for high-speed & 1000s of data transmission at a single time.

In this guide we will learn about the CAN Bus Communication protocol using Microchip MCP2515 CAN Bus Module & Arduino Board. Using the pair of CAN Bus Module MCP2515, we will send the DHT11 Sensor data over a distance of a few centimeters. Typically the communication speed for CAN ranges from 50 Kbps to 1Mbps and the distance can range from 40 meters at 1Mbps to 1000 meters at 50kpbs.

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[raymondmichael]

An eye 👁 opener to me; very informative.
Thanks guys, the world if really a good place with people like you.
Keep educating.

Greetings from Tanzania 🇹🇿

[ryanmckenna]

You explain things really well! 10/10 Thanks!

[MohammedHussain-kjkj]

you are explaining very efficiently. Nice job.

[infinitegaming]

Awesome tutorial keep share your knowledge with us we are learning more from you video .thanks for making this tutorial with us 😀😀

[bigbothoee]

Very nice straight to point best way to deliver info perfect

[SC.k]

Awesome… very beautiful 👌 thanks for sharing my friend 👍👍

[KarmaTiger]

I may have missed it if you mentioned it, but how would you connect the MCP2515 CAN module with a car's CANbus system to sniff the data stream and input commands?

[hhekimyan]

Thank you for the great explanation. Where can I find info for building a cruise control via CAN bus on Ford vehicles?

[Tonyjr]

Very nice tutorial. Can you explain and maybe give an example of using the Mask and Filter functions of that MCP2515 library?

[RaushanKumar-tubi]

Only a life lived for others is a life worthwhile.
- Albert Einstein

thank you very much for such a nice video 😉

[anasrissa]

Great video sir but I have 1 question can I use can bus as point to point network between arduino and nodemcu each one of them send data to the another

So if i want to read and program a srs or sdm air bag module for gm car ...out side the veheical on a test bench do i need one can bus module or do i need 2 modules as you shown...connect to ardunio

[johngiam]

Can uno board be used as a transmitter?

[jamesgeorge]

Modern automobiles may use a high speed network, a low speed network a LIN bus, and an ethernet bus that utilize one or more gateway modules, and a secure gateway module that protects wireless and 5G networks.

[ergunguler]

Video için çok teşekkür ederim. Ben Can ile iletişim sağlayan bir makinenin Can kablosunu arduino ile okumak ve izlemek istiyorum. Nasıl yapabilirim? Ne önerirsiniz?

[dsbohra]

Good intro on CAN Bus. As you know CAN is not a master/slave or sender/receiver network. Any node can be a master. Would you be able to make a project where both boards are sending and receiving messages. thanks.👋

[terohoiska]

Is there information how to send temperature and humidity like XX, X ? With one decimal I mean

[ahmedmelki]

I need to do this with ultrasonic sensor to calculate the distance of car reverse!!!

[hero-glzy]

Can is spi instructions for mcp2515 register?

[gunawan.hendroyono]

its posible MCP2515 CAN Module to do tx rx in the same time?