LapINA219
This is a simple current and voltage sensing library for the INA219 high-side Current Sensor. LapINA219 provides basic current, voltage, and power monitoring, with a current resolution 0.1mA, maximum bus voltage of 16V, and maximum bus current of 400mA. It is designed to monitor a project's power, and is small and lightweight. There are other more complex libraries available if you need more control over the setup.