Building a CANBus Bridge with an ESP32-P4

Published at : 23 Dec 2025

Let's delve into looking at CANBus Bridges, or "Man in the Middle" devices, to see why it might be so a thing worth building to support your CAN powered automotive devices, and we show how to build one by combining an ESP32-P4 and two TJA1051 CAN transceivers

🔗 Components
Waveshare ESP32-P4 Dev Kit - https://www.waveshare.com/esp32-p4-module-dev-kit.htm?aff_id=111694
ESP32-C6 Boards - https://s.click.aliexpress.com/e/_omr59Su
TJA1051 CAN transceiver - https://s.click.aliexpress.com/e/_oFxObqe

🤖 Github Code Repo - https://github.com/garagetinkering/simple-man-in-the-middle

🩵 Join our Discord Community - https://discord.gg/86EpNjzrXQ
☕ Buy me a coffee - https://www.buymeacoffee.com/garagetinkering

00:00 Intro
00:24 What is it?
01:03 Why do it?
03:34 Demonstration
23:54 Next steps

#canbus #canbussniffing #bridging #maninthemiddle