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Lesson35- use SMS control relay and read temperature sensor
#3
because you have not installed PCF8574 arduino library. you can download this library zip file, unzip, copy the folder to your arduino library path.

.zip   PCF8574_library.zip (Size: 23.8 MB / Downloads: 194)
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RE: Lesson35- use SMS control relay and read temperature sensor - by admin - 01-10-2023, 01:19 AM

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