CAN-FD BRIDGE AND LOGGER / ESP32 APPLICATION
CAN-FD Gateway Logger
ESP32 Dual CAN-FD Bridge & Logger
About this project
About this project
A CAN FD tool built on the ESP32-C5's two on-chip TWAI-FD controllers, with three modes picked by DIP switches at boot: a direct bridge between CAN 1 and CAN 2, an SD card logger that stamps a .bin file from the DS3231MZ clock, or a Wi-Fi TCP server for live capture and injection from a PC. Data phase runs to 5 Mbit/s with payloads up to 64 bytes; 3 MB PSRAM ring buffers per channel guard against dropped frames. An I2C OLED, a PCF8574 for the switches and status LEDs, and a GPIO28 safe-eject button that flushes and unmounts the card complete the board. A Python GUI converts logs to Vector ASC for SavvyCAN, and a PyQt6 tool drives the device over TCP, including remote bitrate changes saved to NVS. Building needs ESP-IDF 6.0.2, PSRAM enabled and a custom 3 MB factory partition.
From the README
From the README
- Feature
- Up to 5 Mbit/s data-phase bitrates with payloads up to 64 bytes.
- Feature
- Large PSRAM-backed receive ring buffers (3 MB each)
- Input
- Hardware safe eject button (GPIO28) to flush buffers and safely unmount the SD card
- Build
- ESP-IDF 6.0.2 (or a compatible 6.x release).
- Build
- PSRAM must be enabled in menuconfig.
Hardware
Boards: ESP32
ESP32-class board. Verify the exact board revision, display, power source and wiring in the upstream build guide.
Media credit & rights
Upstream project media · rights remain with its owner · Credit: SebastianS85
Screenshots from the upstream README. Code and firmware were not executed. License notices are included.
View original source ↗ Copyright & removal · Reviewed
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Repository links do not imply author endorsement or verified hardware compatibility. Check the upstream safety guidance before powering or flashing a build.