STMicroelectronics Electricity Metering IC Expansion Board Arduino UNO Development Tool X-NUCLEO-PM33A1 [X-NUCLEO-PM33A1]; 481-146

The STMicroelectronics Electricity Metering IC Expansion Board is based on the STPM33 metering IC, capable of measuring both AC and DC power sources with 0.1% accuracy. It can be powered via an STM32 Nucleo development board or an external 3.3 V supply. Current measurement is performed using an onboard shunt, with an additional connector available for CT-based current sensing. The expansion board is compatible with the Arduino UNO R3 connector pin assignment.

RoHS compliant

Onboard EEPROM for saving the metering data

On-board digital isolators on UART and SPI connections to enable users to evaluate STPM33 device by isolating from MCU

LEDs connected to STPM33 for checking pulses directly from the device

Connectors for external CT connections

Capable of measuring both AC and DC sources

Compatible with STM32 Nucleo boards