OIC, the only solution for that is to invert the signal at the hardware level. Such an inverter can simply be built with a single transistor and two resistors, or you can use a chip with six of them, like a 74HC04 (powered with 3,3V).
RE: Custom 28 Relay Controller Board for Raspberry Pi 3
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Custom 28 Relay Controller Board for Raspberry Pi 3
ঈত
it is too much costly here in Bangladesh!!
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