LILYGO T-CAN485

Overview

The LILYGO T-CAN485 is an ESP32-based industrial IoT development board that adds CAN bus and RS-485 connectivity to the standard ESP32 feature set. This makes it well-suited for building bridges between modern wireless IoT infrastructure and legacy industrial automation systems, vehicle telemetry applications, and building automation protocols.

In addition to the CAN and RS-485 interfaces, the board supports all standard ESP32 protocols: UART, SPI, I2C, I2S, SDIO. WiFi 802.11 b/g/n and BLE 4.2 provide wireless connectivity. The board accepts a wide 5-12V DC power input range, making it compatible with industrial power supplies. A WS2812 addressable RGB LED on GPIO04 provides visual status indication, and a TF card slot enables local data logging.

Firmware Compatibility

The T-CAN485 is compatible with Arduino IDE and ESP-IDF. The Arduino ESP32 CAN library and RS-485 UART libraries apply. CH9102 drivers may be required on some operating systems and are available via the GitHub repository.

Flashing Guide

1. Download and install CH9102 drivers from the GitHub repository if needed.
2. Connect via USB cable to the CH9102 port.
3. Install ESP32 Arduino core via Boards Manager.
4. Select "ESP32 Dev Module" with 4MB Flash in Arduino IDE.
5. Press RST+BOOT together, release RST first, then BOOT to enter download mode.
6. Upload your sketch.