DC CURRENT SENSOR BREAKOUT, UP TO 26VDC, 3.2A, INA219 View larger Disclaimer: Images are for illustration purposes only. Actual products may vary.

DC CURRENT SENSOR BREAKOUT, UP TO 26VDC, 3.2A, INA219

16615

  • Precision DC Current Sensor upt to 3.2A
  • 0.1 ohm 1% 2W current sense resistor
  • Resolution: 12Bit - ±0.8mA
  • Up to +26V target voltage

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CAD$11.50

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The INA219 breakout board will solve all your power-monitoring problems. Instead of struggling with two multimeters, you can just use the handy INA219B chip on this breakout to both measure both the high side voltage and DC current draw over I2C with 1% precision. This chip is much smarter - it can handle high side current measuring, up to +26VDC, even though it is powered with 3 or 5V. It will also report back that high side voltage, which is great for tracking battery life or solar panels.

A precision amplifier measures the voltage across the 0.1 ohm, 1% sense resistor. Since the amplifier maximum input difference is ±320mV this means it can measure up to ±3.2 Amps. With the internal 12 bit ADC, the resolution at ±3.2A range is 0.8mA. With the internal gain set at the minimum of div8, the max current is ±400mA and the resolution is 0.1mA. Advanced hackers can remove the 0.1 ohm current sense resistor and replace it with their own to change the range (say a 0.01 ohm to measure up 3.2 Amps with a resolution of 8mA)

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