3.4 Target Current Measurement

Power to the ATmega3208 and its peripherals is connected from the on-board power supply through a 0Ω resistor (R301) in parallel with a 100-mil Current sense pin header footprint marked with “ISNS” in silkscreen (J301). To measure the power consumption of the ATmega3208 and other peripherals on the board, de-solder the 0Ω resistor and connect an ammeter over the Current sense footprint.

Figure 3-4. Current sense footprint
Tip: A 100-mil pin header can be soldered into the Current sense (J301) footprint for easy connection of an ammeter. Once the ammeter is not needed anymore, place a jumper cap on the pin header.