To accurately check the power consumption of embedded designs, the STM32 Power shield (X-NUCLEO-LPM01A) from STMicroelectronics is an affordable measurement tool for ultra-low-power devices such as IoT endpoints. In addition to measuring static current, it dynamically monitors current from 100 nA to 50 mA and directly computes EEMBC ULPMark scores. An extended GUI is available to visualise captured data for making informed decisions.
The board is a 1,8 V to 3,3 V programmable power supply source with advanced power consumption measurement capability. It performs consumption averaging (static measurement up to 200 mA) as well as real-time analysis (dynamic measurement up to 50 mA with 100 kHz bandwidth).
The X-NUCLEO-LPM01A operates either in standalone mode (using its LCD, joystick and button to display static measurements), or in controlled mode connected to a host PC via USB (using the STM32CubeMonitor-Power software tool with its comprehensive graphical user interface). It can be used to supply and measure the consumption of STM32 Nucleo-32, Nucleo-64 or Nucleo-144 boards, using Arduino connectors. Alternatively, it can be used to supply and measure the consumption of any target connected by wires via the basic connector.
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