{"product_id":"adafruit-ina3221-triple-0-26-vdc-3-2-amp-power-monitor-stemma-qt-qwiic","title":"Adafruit INA3221 - Triple 0-26 VDC, ±3.2 Amp Power Monitor","description":"\u003cp\u003eThis breakout board will solve all your multi-rail power-monitoring problems. Instead of struggling with up to 6 multimeters, you can just use the handy INA3221 chip on this breakout to both measure both the high side voltage and DC current draw of up to three power supplies over I2C with ±1% precision.\u003c\/p\u003e\n\u003cp\u003eMost 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 or low 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.\u003c\/p\u003e\n\u003cp\u003eA precision amplifier measures the voltage across the built-in 0.05 ohm, 1% sense resistors. Since the amplifier maximum input difference is ±163.8mV this means it can measure up to ±3.2 Amps. With the internal 13 bit ADC, the resolution at ±3.2A range is 0.4mA. Advanced hackers can remove the 0.05 ohm current sense resistor and replace it with their own to change the range (say a 0.01 ohm to measure up 16.4 Amps with a resolution of 2mA)\u003c\/p\u003e\n\u003cp\u003eUsage is simple. Power the sensor itself with 3 to 5VDC and connect the two I2C pins up to your microcontroller - the logic level will be the same as the Vin power level. Then connect your target power supplies to VIN1\/2\/3+ and the loads to ground to VIN1\/2\/3-. If you want, set up over-current alerts on the warning or critical IRQ pins. We have libraries in both Arduino and CircuitPython\/Python so you can use it with boards as simple as Arduino-compatible ATmegas all the way up to the latest Raspberry Pi's.\u003c\/p\u003e\n\u003cp\u003eYou don't even need to solder the I2C and power lines: 3.5mm terminal blocks are pre-attached and there are \u003ca href=\"\/collections\/qw-st\" rel=\"noopener\" target=\"_blank\"\u003eSparkFun qwiic compatible STEMMA QT\u003c\/a\u003e connectors for the I2C bus. Just wire up to your favorite micro using a \u003ca href=\"\/products\/jst-sh-cable-qwiic-stemma-qt-compatible\" rel=\"noopener\" target=\"_blank\"\u003eSTEMMA QT adapter cable\u003c\/a\u003e. QT Cable is not included, but \u003ca href=\"\/products\/jst-sh-cable-qwiic-stemma-qt-compatible\" rel=\"noopener\" target=\"_blank\"\u003ewe have a variety in the shop\u003c\/a\u003e. If you need access to all of the pins, a length of 0.1\" pin header is included (so you can easily attach this sensor to a breadboard).\u003c\/p\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eINA3221 Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSenses Bus Voltages From 0 V to 26 V\u003c\/li\u003e\n\u003cli\u003eReports Shunt and Bus Voltage\u003c\/li\u003e\n\u003cli\u003eHigh Accuracy:\u003cbr\u003e– Offset Voltage: ±80 µV (max)\u003cbr\u003e– Gain Error: 0.25% (max)\u003c\/li\u003e\n\u003cli\u003eConfigurable Averaging Options\u003c\/li\u003e\n\u003cli\u003eDefault I2C address 0x40, can be set to 0x41 by closing a solder jumper\u003c\/li\u003e\n\u003cli\u003eProgrammable Alert and Warning Outputs\u003c\/li\u003e\n\u003cli\u003ePower-Supply Operation: 2.7 V to 5.5 V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct Dimensions: 38.6mm x 22.9mm x 10.5mm \/ 1.5\" x 0.9\" x 0.4\"\u003c\/p\u003e\n\u003cp\u003eProduct Weight: 5.8g \/ 0.2oz\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2011_65_EU.svg\" alt=\"RoHS 2 2011 65 EU Compliant\" width=\"145\" height=\"80\"\u003e \u003cimg src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2015_863_EU.svg\" alt=\"RoHS 2 2015 863 EU Compliant\" width=\"145\" height=\"80\"\u003e\u003c\/p\u003e\n\u003ch2\u003eLearn\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-ina3221-breakout\"\u003ePrimary Guide: Adafruit INA3221 Breakout\u003c\/a\u003e Triple 0-26 VDC, ±3.2 Amp Power Monitor!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":56500170686837,"sku":"ADA6062","price":9.13,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0389\/1025\/files\/6062-00.jpg?v=1766148639","url":"https:\/\/wholesale.pimoroni.com\/products\/adafruit-ina3221-triple-0-26-vdc-3-2-amp-power-monitor-stemma-qt-qwiic","provider":"Pimoroni Wholesale","version":"1.0","type":"link"}