I started a new approach in measuring current, voltage and power sensing in UAV devices.
In common, voltage and current measurements are not galvanicaly isolated, read by analog inputs and thus they can cause many headaches to the developers.
I found sone nice current/voltage/power -> I2C ICs, which could perfectly fit the design.
The two examples placed here are with Linear Technology ICs, but you could also use INA219/220/226 or 230 the same manner.....just add a digital optocouplers and...have fun!
The measured voltages with LT ICs could reach 80VDC, while with the TI ICs - up to 30VDC. Measured currents could be higher than 200 and even 300A and depend only on schunts used.