SparkFun Forums

[rustycoat]

I'm wondering if there's a straightforward way to get access to the current voltage from the LIPO JST connector on an Artemis Nano within an arduino program. I see VBATT in the schematic but I don't know how to access that within an arduino program. Basically, I'd like to implement some kind of feedback as to the charge level of my LIPO so that I know when to connect to USB power to charge.

I've looked through the source for variant.h/cpp and the "board support package" source looking for anything alluding to VIN or VBATT but no luck.

Thanks.

[TS-Chris]

Unfortunately there isn't any circuitry on the Nano that allows access to the battery voltage.

You'd need to either build a voltage divider and connect it's output to an analog input, or you could use something like the LiPo Fuel Gauge and talk to that over Qwiic/I2C to get battery voltage.

[rustycoat]

Thanks for the input. That solves that problem (or at least, it clarifies it).