Arduino based DC current and voltage meter. Measures DC currents up to 40 Amps and DC voltage up to 20Volts.

Using a current reading chip and a resistive partition circuit, I designed a DC meter useful for checking battery conusmption in a off the grid solar system. Arduino YUN is used so the meter readings can be made available via WIFI on an ordinary web server. The circuit is powered by the battery itself. The measurement is set up so the power consumption of the device is not measured. This way the meter with no external loads should read zero current.