INA219 Current & Power Monitor Module

The INA219 is a current and power monitor that measures voltage and current on a load over I2C, letting a project report exactly how much power something is drawing.

Specifications

• Measures bus voltage to 26V and current via a 0.1Ω shunt
• Typical range ±3.2A, ±0.8mA resolution
• Calculates power in hardware
• I2C interface, four selectable addresses
• 3.0-5.5V supply
• High-side current sensing

What you can build with the INA219 Current & Power Monitor Module

• Battery drain measurement on portable projects
• Solar charging monitors
• Verifying deep-sleep current on ESP32 nodes
• Bench power measurement
• Home energy sub-metering on DC circuits

Compatibility

Works with Arduino, ESP32, ESP8266 and Raspberry Pi over I2C. Measures DC only — mains AC current monitoring needs a current transformer instead, and mains wiring in New Zealand is registered-electrician work.

Shipping

Dispatched from New Zealand with courier delivery nationwide, including rural addresses. Prices are in New Zealand dollars.