The power to the target controller ATtiny416 is connected from the VREG supply to the targets VCC supply with a 0Ω resistor as shown in the figure below. To measure the power consumption of the device, remove the 0Ω resistor and replace it with an ammeter. The ammeter can be connected between the VREG and VCC pads for easy measurement.
Tip: To connect the two power
domains again, solder in a 0Ω resistor on the footprint or a 100-mil header on the
header footprint at the edge of the board and place a jumper between VREG and
VCC.
Caution: Removing the resistor
while the kit is powered without an ammeter or jumper may cause the ATtiny416 to be powered through its I/O
pins. This may cause permanent damage to the device.
Figure 1. Current Measurement