@GeorgeBoudreau I am a novice, so thanks for the feedback.
Will I be able to solder the LTC2944? I’ve never done this. I thought you paint the area with solder paste, then place the chip, then heat it to flow the solder. Maybe this thing is so tiny, it is not easy to do.
You bring up good points about the isolation. I thought it was odd that the chip gets power from the thing it is measuring. It does not have some V input where we send in 3.3. Also it made no sense to me that they ask for " Use a 4-wire Kelvin sense connection for the sense resistor" when they don’t have a separate V input for that. The INA226 looks much better in this respect.
I’ve already ordered the boards and chip. Is there any chance this will work? How is it supposed to deal with the SDA/SCL without any 3.3 reference?
If it does work, I should be able to compare counting with the LTC2944 vs periodically polling the INA226 and summing on the wemos.
I don’t find the LTC2045. Is there a typo?