Texas Instruments

Single-Phase Electricity Sub-Meter for Smart Buildings


The Energy Watchdog design is a complete tool used to measure and display the energy consumption of an individual load in a smart building such as major home appliances. With this tool engineers can quickly evaluate TI’s solution a low-cost energy measurement application. This reference design will speed engineers’ development time as it comes complete with hardware and software design files. The Energy Watchdog design also is expandable to work with TI’s ZigBee and Wifi reference designs to add wireless communications to the end product.

  • Single-phase energy measurement system On-board display for incoming AC voltage: current : frequency: active power: reactive power: apparent power : power factor: and Energy consumption (in kWh ) Compatible with input voltage from 110V-240V Simple push buttons for adjusting LCD display and time settings Interface to TI communications modules for ZigBee(CC2538EM-RD): Wifi(CC3000EM-RD): and Sub-1GHz RF for Wireless M-Bus.
Product Categories
  • Arm-based microcontrollers


Part Number Name Companion Part
MSP430AFE253 MSP430AFE253 Buy Datasheet

Bill Of Materials

Download the bill of materials for TIDM-ENERGY-WATCHDOG Download


Quickly understand overall system functionality.

Download the schematic for TIDM-ENERGY-WATCHDOG

Design File

Download ready-to-use system files to speed your design process. Get Viewer.

Download the design file for TIDM-ENERGY-WATCHDOG