Fritzing

Display current and current from a solar cell. Limited to a 5V-output solar cell. For larger solar cells, a voltage-divider from cell to Arduino is needed.

The voltage from the solar cell is connected to A1 of the Arduino's ADC. Meanwhile, the current from the solar cell is read using an Arduino current sensor with ACS712. Output is displayed on an I2C liquid crystal display.

See Fritzing file for complete wiring diagram.