もっとやすくてSOT23-8あった https://www.digikey.jp/ja/products/detail/texas-instruments/INA219AIDCNR/1952540
SOT23-8変換基板もあった https://akizukidenshi.com/catalog/g/g108342/
digikeyは送料高いからこっちで https://www.chip1stop.com/view/dispDetail/DispDetail?partId=TI01-0112614&mpn=INA219AIDCNT&keyword=ina219
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