STMicroelectronics Electricity Metering IC Expansion Board Arduino UNO Development Tool X-NUCLEO-PM33A1

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