This Python library supports the INA219 voltage, current and power monitor from Texas Instruments with a Raspberry Pi using the I2C bus. The intent of the library is to make it easy to use the quite complex functionality of this sensor.
Expose GPIO modules (Raspberry Pi, Beaglebone, PCF8754, PiFace2 etc.) and digital sensors (LM75 etc.) to an MQTT server for remote control and monitoring.