The INA3221 Breakout Board is an easy to use 3 Channel Current / Voltage I2C Monitor.
The INA3221 Breakout Board monitors both shunt voltage drops and bus supply voltages in addition to having programmable conversion times and averaging modes for these signals. The INA3221 also offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.
Sometimes, you want to measure lots of things in your system. A great example is when you have a solar powered system. To figure out what is going on in your solar system dynamically, you need to measure the current and voltage for the Solar Cells, Batteries and the Load (computer) all at the same time. The conventional way to do this is to use three INA219 (same function, but only one channel). This INA3221 breakout board will do the same job as three INA219's but for about half the cost and about 40% of the space.
Tutorial & Library can be found here!