Hello! I want to use PFC8574 expander to control relays, but I have no idea how to use multiple expanders in a loop. I read this get a digitalRead value for multiple PCF8574 Expanders and there is the solution for digitalRead. My code for digitalWrites using Arduino, but I need more outputs. v…

[image] mojito_p: PCF8574 expa = {0x20, 0x21, 0x22, 0x23,0x24, 0x25, 0x26, 0x27};// expanders addresses expa is not an array; change it to PCF8574 expa[] = {0x20, 0x21, 0x22, 0x23,0x24, 0x25, 0x26, 0x27};// expanders addresses If you still have problems after that, please post the updated s…

How to digitalWrite value for multiple PCF8574 Expanders in loop

Projects Programming

sterretje March 4, 2022, 8:33am 8

You're right; I did not pay enough attention.

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How to digitalWrite value for multiple PCF8574 Expanders in loop

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