You have field devices (BMS, inverter, thermostat, IO module, thermal pump) that expose valuable status and controls over MODBUS, but your automation stack cannot read them directly or consistently.
This library uses the Arduino Wire.h to complete I2C transactions. Development environment specifics: IDE: Arduino 1.0.5 Hardware Platform: Arduino Pro 3.3V/8MHz T5403 Breakout Version: 1.0 ...