ITEM NAME:GY-INA219 I2C Bi-directional DC Current Power Supply Sensor Breakout Module FT Description: This 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. Most current-measuring devices such as our current panel meter are only good for low side measuring. That means that unless you want to get a battery involved, you have to stick the measurement resistor between the target ground and true ground. This can cause problems with circuits since electronics tend to not like it when the ground references change and move with varying current draw. This chip is much smarter - it can handle high side current measuring, up to +26VDC, even though it is.This breakout board will solve all your power-monitoring problems. Usage is simple. We'll have a more detailed tutorial up shortly. With the internal 12 bit ADC, the resolution at  ±3.2A range is 0.8mA.
