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INA219 can be achieved within the maximum error accuracy 85℃, temperature range from -40℃ to + 1%, the maximum offset is 100 uV.
The high-precision products combine the advantages of 12-bit resolution. This module can be sensed bus voltage range is 0 V to +26 V.
Footprint: SOT23
Working Voltage 3~5V
Size: 25.5* 22.3mm
Used for I2C port zero drift / bidirectional current / power monitoring sensor module
Package Included:
1 * INA219 Bi-directional DC Current Power Supply Sensor Module
Paperino
Reviewed in the United States on March 19, 2021
This breakout board allows to read voltage (up to 32V) and current (up to 2A) of a target circuit via I2C. It works great and the readings are accurate as verified with a digital mulltimeter.The documentation is a bit fuzzy, it took me some time to realize that both grounds must be connected. (duh!) in order to measure the voltage/power properly and not cause interference (I was unable to flash my chip when the board was connected with the missing common ground connection). See picture.Excellent product that I was almost ready to return until I figured out what I was doing wrong. I plan to create a simple device with a microUSB plug to power the target device under test and measure consumption. This fits the bill perfectly along with something like: https://www.amazon.com/MakerFocus-Development-0-96inch-Display-Compatible/dp/B076KJZ5QM
AR
Reviewed in the United States on December 15, 2019
I developed a Personal Weather Station(PWS) that is feeding data to Wunderground, the PWS is in the backyard, but I thought a solar panel and a battery will be much easier and cheaper than run a power cable from the house. So I need to know how the battery and solar panel are doing, to do that I am using the INA219 to monitor the power source.If you want to monitor a power supply, forget about the MAX471, INA169, etc. They are no easy to program, and no accurate, etc. They are a pain you know where. Go with the I2C INA219, and AdaFruit code, and you are done for the day. This lady library is very easy to get results quick, and accurate. You monitor current, voltage, power, etc.
Tafca. (Tabarini Fan, Côte d'Azur)
Reviewed in the United States on April 3, 2019
I first tried out this INA219 using the Excamera Labs I2C Driver board. The device ID is 0x40 and unless the datasheet is handy, is relatively difficult if not impossible to actually use. I did have the datasheet, but admittedly it took way longer than expected to use this device. The problem is that the datasheet claims some default settings are applied at reset time. I found that I needed to still write those values to the registers before actually using the INA219.The good thing is that there are a ton of INA219 tutorials, walk-throughs, and even sample code. Adafruit in particular has an excellent tutorial for using this with Arduino boards. Most people should probably start there.Keep in mind that unlike voltage meters that measure across terminals, current meters measure in series. All the current needs to flow though this device to measure it. Putting it across terminals would certainly be a bad idea. Again, if you've never used one - check the tutorials.It is unfortunate that so many recent reviewers had problems. Perhaps the bad batch was resolved. Mine seems to work just fine.
D. Marks
Reviewed in the United States on November 14, 2018
I suspect some of the boards are shorted or otherwise defective. Mine got super hot once I supplied power and always responded with 0v, 0A. Trying again with board #2 now.
Consumer 2U
Reviewed in the United States on October 8, 2018
Breakout arrived shorted VCC-GND. Possibly shouted thru the capacitor. Won't comm via I2C, gets really hot when connected to power.Update: I ordered two more of these because my first was defective. Both units arrived shorted VCC to GND measured ~2Ω at the IC. I removed the suspected capacitor from the breakout and found that it was not shorted and the short is inside of the INA219 IC. The seller has a bunch of bad ic's installed in their breakout boards. Buyer Beware!
S. A. ROBBINS
Reviewed in the United States on October 14, 2018
Received two from one source and both were defective. The two that I received from HiLetgo were good.Shorted VCC to Gnd and both 219 ICs got very hot when powered up.Tried one board and it would lock up the UNO board. Checked the SDA and SCL lines on the board and it appeared that both were shorted to ground, measured 30 ohms on SCL and 40 ohms on SDA to GND. Worse yet, VCC to GND measured 1.8 ohms, not good! On the other board, VCC to GND measured 10 ohms. Just to confirm, I connected both boards to a power supply, one drew over 500ma, the other over 250ma. And both 219 chips got very hot. I'm guessing someone destroyed the chips with improper handling during assembly. All measurements with a Fluke digital meter.
Kindle Customer
Reviewed in the United States on May 23, 2017
works great. exactly ad described.
Daniel Brown
Reviewed in the United States on January 20, 2017
Very easy to setup and use! I used with a Adafruit TrinketPro to observe the data out of it and had no problems at all!
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