Im working on a voltage monitoring project because Ive ran into the need with quite a few other projects that I plan to set as autonomous. I need to monitor the voltage on a LiPo battery because I want to use it eventually to power an air quality monitoring station that samples every 30 minutes. Currently it is powered by a wall wart connected to the Arduino’s barrel jack.
I have this 3.7V - 1480mAh LiPo pack. I have it connected to a solar panel via 5V mini-USB 1A charger and dc-dc booster. I was thinking of connecting a couple of leads from the battery to the UNO in order to read the voltage of the LiPo throughout the day.
According to the Analog Voltage Read example I would plug the + from the LiPo to the A0 pin on the UNO and the - terminal from the LiPo to a GND pin on the UNO, correct?