INA219 High Side DC Current Sensor Breakout Board - 26V ± 3.2A Max

INA219 High Side DC Current Sensor Breakout Board - 26V ± 3.2A Max - Adafruit

This board will solve all power monitoring problems. Instead of dealing with two multimeters, you can use the handy INA219B chip in between to measure both the high side voltage and the DC current draw on I2C with 1% accuracy.

Most current meters such as current panel meters are only suitable for low side measurement. This means that if you don't want to buy a battery, you have to keep the measurement resistance between the target ground and the actual ground. This can cause problems in circuits because electronics tend to come into play when ground references change and move with changing current draw. This chip is much smarter - it can measure side current as high as + 26VDC, although it's powered by 3 or 5V power. It also reports back high side voltage, perfect for monitoring battery life or solar panels.

A precision amplifier measures voltage at 0.1 ohm, 1% sense resistance. Since the amplifier's maximum input difference is ± 320mV, it means it can measure up to ± 3.2 Amps. With built-in 12 bit ADC, the resolution in the ± 3.2A range is 0.8mA. When the internal gain is set at the minimum div8, the maximum current is ± 400mA and the resolution is 0.1mA. Advanced users can remove 0.1 ohm current sensing resistance and replace their own sensor to change the range (let's say 0.01 ohms to measure 32 Amps with a resolution of 8 mA)

It features a 6-pin header (so you can easily connect this sensor to a breadboard) and a 3.5mm terminal plug so you can easily plug and unplug it. It is simple to use. Power the sensor with 3 to 5VDC and connect the two I2C pins to your microprocessor. Next, connect the target power supply to VIN + and ground to VIN-. There is a detailed explanation to do all gain, range and math operations with Arduino or CircuitPython. You can find it in the Documents area.

INA219 High Side DC Current Sensor Breakout Board - 26V ± 3.2A Max Specifications

• 0.1 ohm 1% 2W current sensing resistance
• Target voltage up to + 26V
• Current measurement up to ± 3.2A with ± 0.8mA resolution
• 0,9 "x 0,8" PCB
• PCB (excluding header or terminal block): 1.9g
• Note: The terminal block supplied with your product may be blue or black.
• This board / chip uses I2C 7 bit addresses 0x40, 0x41, 0x44, 0x45, which can be selected with jumper wires.