T-2Can-FD get it now

Overview

T-2Can-FD is an ESP32-S3-based development board with dual CAN FD bus interfaces. It provides two independent CAN buses: CAN bus 1 is driven by an external MCP2518FD controller (SPI, CAN-FD capable, compatible with CAN 2.0), and CAN bus 2 uses the ESP32-S3's built-in TWAI controller (CAN 2.0B). Ideal for industrial communication, vehicle diagnostics, robot control, and other CAN bus applications that require high reliability and high throughput.

Usage Notes:

1. If firmware flashing fails, press and hold the BOOT-0 button and try again.
2. When using USB serial debugging, USB is configured as UART0 output by default. To use the external UART interface, change the CDC settings (see FAQ).

Quick Start

Example Support

Example	PlatformIO / Arduino	Description
can	✅	CAN communication example (requires CAN FD adaptation)
original_test	✅	Factory test program

PlatformIO

1. Install Visual Studio Code and Python.
2. Search for and install PlatformIO IDE in VS Code.
3. Clone or download the project repository: https://github.com/Xinyuan-LilyGO/T-2Can.
4. Open the project folder in VS Code.
5. Open platformio.ini, and uncomment the desired example under [platformio] (default_envs = xxx) for the T-2Can-Fd configuration.
6. Click the lower-left ✓ to build.
7. Connect the board and click → to upload.

Arduino IDE

1. Install Arduino IDE.
2. Install ESP32 board support: Tools → Board → Board Manager → search for esp32 and install Espressif Systems.
3. Select the board: ESP32S3 Dev Module.
4. Copy all libraries from the project's libraries directory into the Arduino libraries folder (Sketchbook location/libraries).
5. Open the example sketch (.ino) from the examples directory.
6. Select the following settings in the Tools menu:

Arduino IDE (ESP32-S3)	Value
Board	ESP32S3 Dev Module
Upload Speed	921600
USB Mode	Hardware CDC and JTAG
USB CDC On Boot	Enabled
USB Firmware MSC On Boot	Disabled
USB DFU On Boot	Disabled
CPU Frequency	240MHz (WiFi)
Flash Mode	QIO 80MHz
Flash Size	16MB (128Mb)
Core Debug Level	None
Partition Scheme	16M Flash (3MB APP/9.9MB FATFS)
PSRAM	OPI PSRAM
Arduino Runs On	Core 1
Events Run On	Core 1

7. Select the correct port and click Upload.

Firmware Burning (using flash tool)

1. Open the ESP32 flash tool in the project's tools directory.
2. Select the correct chip and flashing method, then click OK.
3. Select the firmware file in the firmware/ directory, set the address, choose the port, and click burn.
4. If burning fails, press and hold the BOOT-0 button and try again.

Related Videos

No video tutorials yet, contributions are welcome.

Key Features

• MCU: ESP32-S3-WROOM-1U (16 MB Flash + 8 MB PSRAM)
• CAN bus 1: external MCP2518FD controller via SPI (CAN-FD, compatible with CAN 2.0)
• CAN bus 2: ESP32-S3 built-in TWAI controller (CAN 2.0B)
• Supports Wi-Fi + Bluetooth 5.0 LE
• USB powered with onboard 5V buck converter
• External UART expansion interface (CDC can be switched by configuration)
• Compact design suitable for automotive and industrial fieldbus applications

Product Parameters

Feature	Specification
MCU	ESP32-S3-WROOM-1U
Flash	16 MB
PSRAM	8 MB
CAN Bus 1	MCP2518FD (SPI, CAN-FD)
CAN Bus 2	ESP32-S3 built-in TWAI (CAN 2.0B)
Interface	SPI
Wireless	Wi-Fi 802.11 b/g/n + Bluetooth 5.0 LE
Power	USB 5V
Dimensions	TBD

Pinout Diagram

Pin definitions refer to the configuration file:
pin_config.h

See the header file above for GPIO mapping, SPI chip select, interrupt pins, and other details.

Main Interface Description

Interface	Description
CAN1	MCP2518FD CAN-FD controller, SPI chip select CS1
CAN2	ESP32-S3 built-in TWAI controller
USB	Default UART0 debug output
UART Interface	External UART0 (requires CDC disabled)
BOOT-0	Download mode button
RST	Reset button

Dimension Diagram

Schematic

• T-2Can-Fd V1.0 Schematic PDF

Datasheet

• MCP2518 Datasheet
• ESP32-S3-WROOM-1U Datasheet

Software Development

• T-2Can GitHub Repository
• Longan_CANFD library (for MCP2518)

FAQ

Q: I still can't set up the development environment after reading the guide. What should I do?
A: Refer to LilyGo-Document for more detailed setup guidance.

Q: When Arduino IDE prompts me to update libraries, should I update them?
A: Choose not to update. Different library versions may be incompatible; it is recommended to use the project-provided library versions.

Q: Why is there no serial output on the board's UART interface?
A: The project uses USB as UART0 output by default. To use the external UART interface:

• PlatformIO users: modify platformio.ini and set build_flags = -DARDUINO_USB_CDC_ON_BOOT=true to false.
• Arduino users: set USB CDC On Boot to Disabled in the Tools menu.

Q: Why does flashing keep failing?
A: Press and hold the BOOT-0 button while retrying the download.

Q: Is T-2Can-Fd compatible with T-2Can firmware?
A: No. T-2Can-Fd uses MCP2518FD for CAN bus 1 and ESP32-S3 TWAI for CAN bus 2, requiring corresponding libraries and examples.

Version History

Version	Release Date	Update Notes
T-2Can-Fd V1.0	2026-04-10	Initial release, MCP2518FD + ESP32-S3 TWAI