INA219 Current sensor module - 26V DC - 3,2A max


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*Disclaimer: The images are merely illustrative.

With this small module you will solve all your energy measurement problems. Instead of using two multimeters, you only need to use this module with the INA219B chip and measure both the voltage and current consumption through the I2C protocol with 1% accuracy.

With this chip can measure current, up to + 26VDC, although it is powered with 3 or 5 VDC. It can detect low voltage, which is ideal for tracking the life of a battery or solar panels.

A precision amplifier measures the voltage across the 0.1 ohm detection resistance of 1%. Since the maximum input difference of the amplifier is ± 320 mV, this means it can measure up to ± 3.2 amperes. With the 12-bit internal ADC, the resolution of the range ± 3.2 A is 0.8 mA. With the internal gain set to the minimum of DIV8, the maximum current is 400 mA ± and the resolution is 0.1 mA.

The 6-pin power terminal bar is included (so you can more easily apply this sensor to an open circuit board), as well as a 3.5 mm connection terminal so you can easily connect the load.

Connect the sensor with 3 to 5 VDC and connect the two I2C pins to your microcontroller. Then connect the target power supply to VIN + and ground load to VIN-


  • Uses the INA219B chip
  • Current detection resistance of 0.1 ohm 1% 2W
  • Up to 26 V maximum voltage on the sensitive side
  • Up to ± 3.2 Maximum current, with a resolution of ± 0.8mA (Change resistance to extend range)
  • This module uses I2C addresses of 7 bits 0x40, 0x41, 0x44, 0x45, selectable by weldable bridges (A0 and A1).

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