I have purchased a INA3221 breakout board from eBay to replace several INA219s. They differ from the switchdoc INA3221 breakout board and the INA219 in having no V+ and V-. Instead they have three channels with CH1/2/3 and GND. I have tried to connect these pins as V+ and V-, but there is no current…

INA3221 breakout board

MarkT September 25, 2017, 10:17am 7

Look carefully at the pictures - 3 of the 6 holes are linked to the groundplane.

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