Silicon Labs MCU Starter KIT's real-time current measurement tool Advanced Energy Monitor. Basically, it is for MCU current measurement, but it can also measure current consumption of user circuits connected to a 3.3V power supply. The measurable current range is from 0.1uA to 50mA. When the MCU's Energy Mode is set to Shut off mode, the MCU's current flows only a few tens of nA, so it means that you can actually measure the current of only the user's circuit! So, I measured the current consumption of Silicon Labs Sensor Puck. However, it is a waste to use the starter kit only for current measurement, so please try using the Silicon Labs MCU EFM32 series. Cortex-M (M0+/M3/M4F) lineup.