improved INA3221 breakout-3 power supplies-0.01Ohm

Name: improved INA3221 breakout-3 power supplies-0.01Ohm
SKU: 18672
Price: 10.00 USD
Availability: InStock
Rating: 4.70 (5 reviews)

(5 Reviews)

improved INA3221 3 channel voltage and current sensor breakout board - allows 3 separate power supplies - 0.01 Ohm sense resistors

Designed by yesyes Electronics in United Kingdom

improved INA3221 breakout-3 power supplies-0.01Ohm 1

improved INA3221 breakout-3 power supplies-0.01Ohm 2

improved INA3221 breakout-3 power supplies-0.01Ohm 3

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2020-05-21T09:18:31.851Z-INA3221-R010_V1.1_front1.png

2020-05-21T09:18:31.851Z-INA3221-R010_V1.1_back1.png

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improved INA3221 3 channel voltage and current sensor breakout board - allows 3 separate power supplies - 0.01 Ohm sense resistors

They are here! New stock has arrived. The new V1.1 has 2 changes: green PCB, not blue I removed the solder mask between the CH+/- solder points and sense resistors. This should result in solder …

What is it?

improved INA3221 3 channel voltage and current sensor breakout board
allows 3 separate power supplies
0.01 Ohm sense resistors
no annoying LEDs

Specifications

Size: 30 x 26mm
Supply Voltage: 2.7 - 5.5V
Supply Current: 350 µA typical (INA3221)
Sense Voltage: 0 - 26V, 8mV resolution
Sense Current: ±16A, 4mA resolution (flow some additional solder on the tracks between solder points and sense resistors if you go above 5A)
Sense Resistors: 0.01 Ohm (R010), 1% tolerance, 2Watt
I2C Addresses: 4 (0x40 (default) - 0x43) selectable by solder jumper or A0 pin, see INA3221 datasheet

See documentation link below for more details on this board.

Why did you make it?

The commonly available INA3221 breakout board has a design flaw where all 3 channels use the same power supply. I wanted to fix that and make an improved version available.

What makes it special?

My version implements the example circuit from the INA3221 datasheet and therefore allows 3 different power supplies; one per channel.

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Quantity	Price
1	$10.00
2-4	$9.00
5+	$8.00

Review Breakdown

Average Ratings

Product: (5.00)

Documentation: (4.60)

Shipping: (4.60)

Communication: (4.60)

Chris | Dec. 10, 2021

So much better than the normal INA3221. Thank you!

I have been learning IoT as a hobby for the last 2 years and when I decided to build a weather station I thought how hard can it be right?. :)

After much Arduino and ESP8266 learning I found the requirement for power monitoring is an area that less documented. When I learned of the INA3221 it jumped out as the perfect solution to monitor Battery, Load and Solar all in one I2C chip. But the normal one shares a common ground and is not intended for this.

The unit you see here is however designed differently and with no common ground it is PERFECT for this. I have had instant success with monitoring all 3 power feeds and can now see exactly how well the solar panel is charging the battery and how well the deep sleep on the NodeMCU is working.

I highly recommend this board if you are intending any form of battery charging/usage measurements. The 010 version (this one) does indeed use less power and still reads very accurately.

I am in Australia and shipping to here was not that long. Packaging showed the care and devotion of a serious enthusiast with static bags and padded satchel.

Was impressed enough to come back and write this review as I order a hand full more of these for future projects.

David | April 28, 2021

Great Product

I discovered this by accident whilst researching the devices on Amazon, this version is far superior to those and I have no hesitation in recommending this supplier and his version of this product, great value for money and fast and efficient delivery, thank you

William | July 21, 2020