LilyGO T-SimHat Expansion Board w/ CAN, RS485, Relay, DHT11, INA219

Description

The LilyGO T-SimHat Expansion Board is a comprehensive peripheral module engineered to extend the functionality of the T-SIM series of 4G LTE Cat-1 and NB-IoT cellular modules. It provides critical industrial-grade interfaces and sensors, enabling developers to build sophisticated remote monitoring and control systems without external wiring complexity.

Built around robust communication protocols, the board integrates a CAN controller for automotive and industrial bus networks and an RS485 transceiver for long-distance, noise-immune serial communication, commonly used with Modbus RTU. The onboard electromechanical relay allows for direct control of actuators, motors, or lighting. Sensor integration includes a DHT11 for basic environmental data and an INA219 for precise voltage, current, and power consumption telemetry of the connected load or system.