In this video, I use a pocket-sized oscilloscope to measure CAN signals on a breadboard. The system consists of two ESP32 microcontrollers, each connected to a TJA1050 CAN transceiver. I use an open-source Arduino library for CAN communication.

The primary objective of this experiment is to determine if using 5V CAN transceivers with 3.3V microcontrollers is safe. As a bonus, we get to see the voltage levels adhere to the CAN protocol in real life. Enjoy!

[TJA1050 CAN TRANSCEIVER DATASHEET]
https://www.nxp.com/docs/en/data-shee...

[Great article on CAN]
https://circuitstate.com/tutorials/wh...

[Arduino ESP32 CAN library]
https://github.com/sandeepmistry/ardu...

[ESP32 Dev Module]
https://amzn.to/3HCIqwY

[CAN Bus Module Transceiver]
https://www.amazon.com/dp/B07W4VZ2F2?...