Uh-Oh Battery Level Indicator Hookup Guide
Once you have soldered your kit together, it's time to start monitoring your battery levels. For this example, we will be hooking up the indicator to a 3.7V lipo battery that is powering an Arduino Uno. We will also be including a Power Cell- LiPo Charger/Booster in the circuit, to ensure that we can recharge the battery when it reaches the low voltage limit.
Uno → PowerCell Charger
- 5V → VCC
- GND → GND
PowerCell Charger → Uh-Oh Indicator
- PowerCell + → Sys +
- PowerCell - → Sys -
Uh-Oh Indicator → Battery
- The JST connector on the battery is notched and corresponds to the notch on the Uh-Oh Indicator.
Here is a Fritzing diagram showing the actual connections between the Uno, the PowerCell, the Uh-Oh indicator, and the battery.
Once you have everything hooked up, you will need to adjust the trimpot on the Uh-Oh indicator board to the voltage at which you would like to be notified.