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INA219 I2C Bi-directional Current, Voltage & Power Sensor Module

K-TECHNICS
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KSh400.00

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When you need a reliable, cost-effective way to track power consumption and battery life, the INA219 Current Sensor Module is an industry standard. This versatile breakout board measures high-side voltage and DC current draw, calculating the total power output on the fly and delivering the data over a straightforward I2C interface.

With a 12-bit ADC and 1% maximum error over its operating temperature range, the INA219 provides excellent baseline accuracy for low-to-medium power DC circuits. It supports bus voltages up to 26V and continuous current measurement up to ±3.2A using the onboard 0.1Ω, 1% sense resistor, making it incredibly simple to integrate with microcontrollers like the ESP32 and STM32.

Perfect For:

  • DC Energy Metering: An excellent, highly supported foundation for designing and prototyping custom DC energy meters.

  • Power Harvesting & Battery Logging: Ideal for tracking power generation in TEG (Thermoelectric Generator) arrays or logging the charging efficiency of MPPT circuits feeding 10,000mAh battery banks.

  • Low-Power Hardware Monitoring: Keep an exact eye on the power draw of embedded nodes or lightweight homelab servers to verify tight efficiency targets, like a 20W power footprint.

Technical Specifications:

  • IC: Texas Instruments INA219

  • Interface: I2C (Up to 4 selectable addresses via solder jumpers)

  • Maximum Bus Voltage: 26V DC

  • Maximum Current: ±3.2A (with default 0.1Ω shunt resistor)

  • ADC Resolution: 12-bit

  • Sensing Type: High-side bi-directional current sensing

  • Operating Logic Voltage: 3.0V to 5.5V

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