SparkFun LiPo Charger Plus Brand_Waveshare 1x ADC to measure LiPo

1x ADC to measure LiPo battery voltage level

but any will work)

and six buttons

but the Nano RP2040 Connect packs a hardware punch

SparkFun LiPo Charger Plus Brand_Waveshare 1x ADC to measure LiPoThe SparkFun LiPo Charger Plus is the souped up power option in the SparkFun line of single cell lithium polymer (LiPo) battery chargers. With this iteration, we've changed the input charge connector to USB C and provided charge rate selection as well as optional thermal protection. Charge, power, and done LEDs clearly indicate the status of your charging process. This board can be used for any of the 2 pin JST connector single cell LiPo batteries we