OK, OK, OK, I've had 30 more of these manufactured. But after that they will not be available any more. Then please order the INA3221-RNONE model with additional R100 resistors. See below.

If you do want the 0.100 Ohm version of this module, you can order the model without resistors and select the option to add 0.100 Ohm resistors and whether you want them soldered on or supplied separately. The combined price is the same as this module here. https://www.tindie.com/products/yesyes/improved-ina3221-breakout-3-power-supplies-no-res/

What is it?

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

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: ±1.6A, 0.4mA resolution
• Sense Resistors: 0.1 Ohm (R100), 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.